Curriculum Vitae

Asbjørn Støylen, Dr. med.

 

Born:                           1956

Civil status                  Married.

Present position :       Professor, NTNU

                                    Consultant Physician in Cardiology St.Olavs Hospital

 

Academic degree:      Dr. med. (Doctorate in Medicine) Trondheim 2001: Strain rate imaging of the left ventricle by ultrasound. Feasibility, clinical validation and physiological aspects.

 

Main Research Interests

Associated with:


Cius Centre for innovative Ultrasound Solutions
K.G. Jebsen Center of Exercise in Medicine

Prizes:

Norsk kardiologisk selskap: Ole storsteins pris for hjerteforskning 2012
       Prisforedrag

Publications:

Peer reviewed full  papers:


  1. Stensvold D, Viken H, Steinshamn SL, Dalen H, Støylen A, Loennechen JP, Reitlo LS, Zisko N, Bækkerud FH, Tari AR, Sandbakk SB, Carlsen T, Ingebrigtsen JE, Lydersen S, Mattsson E, Anderssen SA, Fiatarone Singh MA, Coombes JS, Skogvoll E, Vatten LJ, Helbostad JL, Rognmo Ø, Wisløff U. Effect of exercise training for five years on all cause mortality in older adults-the Generation 100 study: randomised controlled trial.BMJ. 2020 Oct 7;371
  2. Støylen A, Dalen H, Molmen HE. Left ventricular longitudinal shortening: relation to stroke volume and ejection fraction in ageing, blood pressure, body size and gender in the HUNT3 study. Open Heart. 2020 Sep;7(2):e001243.
  3. Salles S, Espeland T, Molares A, Aase SA, Hammer TA, Støylen A, Aakhus S, Lovstakken L, Torp H. 3D Myocardial Mechanical Wave Measurements: Toward In Vivo 3D Myocardial Elasticity Mapping. JACC Cardiovasc Imaging. 2020 Aug 24:S1936-878X(20)30595-7.
  4. Kvåle KF, Salles S, Lervik LCN, Støylen A, Løvstakken L, Samset E, Torp H. Detection of Tissue Fibrosis using Natural Mechanical Wave Velocity Estimation: Feasibility Study. Ultrasound Med Biol. 2020 Sep;46(9):2481-2492.
  5. Lund JS, Aksetøy IA, Dalen H, Amundsen BH, Støylen A. Left ventricular diastolic function: Effects of high-intensity exercise after acute myocardial infarction. Echocardiography. 2020 Jun;37(6):858-866.
  6. Støylen A, Mølmen HE, Dalen H. Over all variability of mitral annular plane peak systolic velocity and peak global longitudinal strain rate in relation to age, body size, and sex: The HUNT Study. Echocardiography. 2020 Apr;37(4):578-585.
  7. Letnes JM, Nes B, Vaardal-Lunde K, Slette MB, Mølmen-Hansen HE, Aspenes ST, Støylen A, Wisløff U, Dalen H. Left Atrial Volume, Cardiorespiratory Fitness, and Diastolic Function in Healthy Individuals: The HUNT Study, Norway. J Am Heart Assoc. 2020 Feb 4;9(3):e014682.
  8. Karlsen T, Videm V, Halle M, Ellingsen Ø, Støylen A, Dalen H, Delagardelle C, Larsen AI, Hole T, Mezzani A, VAN Craenenbroeck EM, Beckers P, Pressler A, Christle JW, Winzer EB, Mangner N, Woitek FJ, Höllriegel R, Snoer M, Feiereisen P, Valborgland T, Linke A, Prescott E Baseline and Exercise Predictors of V˙O2peak in Systolic Heart Failure Patients: Results from SMARTEX-HF. Med Sci Sports Exerc. 2020 Apr;52(4):810-819.
  9. Støylen A, Mølmen HE, Dalen H. Left ventricular global strains by linear measurements in three dimensions: interrelations and relations to age, gender and body size in the HUNT Study. Open Heart. 2019 Sep 26;6(2):e001050.
  10. Grue JF, Storve S, Støylen A, Torp H, Haugen BO, Mølmen HE, Dalen H. Normal ranges for automatic measurements of tissue Doppler indices of mitral annular motion by echocardiography. Data from the HUNT3 Study. Echocardiography. 2019 Sep;36(9):1646-1655.
  11. Wigen MS, Fadnes S, Rodriguez-Molares A, Bjastad T, Eriksen M, Stensath KH, Stoylen A, Lovstakken L.4-D Intracardiac Ultrasound Vector Flow Imaging-Feasibility and Comparison to Phase-Contrast MRI. IEEE Trans Med Imaging. 2018 Dec;37(12):2619-2629.
  12. Støylen A, Mølmen HE, Dalen H. Relation between Mitral Annular Plane Systolic Excursion and Global longitudinal strain in normal subjects: The HUNT study. Echocardiography. 2018 Feb 4. doi: 10.1111/echo.13825. [Epub ahead of print]
  13. Lervik LCN, Brekke B, Aase SA, Lønnebakken MT, Stensvåg D, Amundsen BH, Torp H, Støylen A. Myocardial Strain Rate by Anatomic Doppler Spectrum: First Clinical Experience Using Retrospective Spectral Tissue Doppler from Ultra-High Frame Rate Imaging. Ultrasound Med Biol. 2017 Sep;43(9):1919-1929. doi: 10.1016/j.ultrasmedbio.2017.05.016.
  14. Stensvold D, Bucher Sandbakk S, Viken H, Zisko N, Reitlo LS, Nauman J, Gaustad SE, Hassel E, Moufack M, Brønstad E, Aspvik NP, Malmo V, Steinshamn SL, Støylen A, Anderssen SA, Helbostad JL, Rognmo Ø, Wisløff U. Cardiorespiratory Reference Data in Older Adults: The Generation 100 Study. Med Sci Sports Exerc. 2017 Nov;49(11):2206-2215.
  15. Ellingsen, Øyvind; Halle, Martin; Conraads, Viviane; Støylen, Asbjørn; Dalen, Håvard; Delagardelle, Charles; Larsen, Alf Inge; Hole, Torstein; Mezzani, Alessandro; Van Craenenbroeck, Emeline M.; Videm, Vibeke; Beckers, Paul; Christle, Jeffrey W.; Winzer, Ephraim; Mangner, Norman; Woitek, Felix; Höllriegel, Robert; Pressler, Axel; Monk-Hansen, Tea; Snoer, Martin; Feiereisen, Patrick; Valborgland, Torstein; Kjekshus, John; Hambrecht, Rainer; Gielen, Stephan; Karlsen, Trine; Prescott, Eva; Linke, Axel. High-Intensity Interval Training in Patients with Heart Failure with Reduced Ejection Fraction. Circulation 2017 ;Volum 135.(9) s. 839-849
  16. Karlsen, Trine; Leinan, Ingeborg Megård; Aamot, Inger Lise; Dalen, Håvard; Støylen, Asbjørn. Safety of the CO-Rebreathing method in patients with coronary artery disease. Medicine & Science in Sports & Exercise 2016 ;Volum 48.(1) s. 33-38
  17. Støylen, Asbjørn; Hansen, Harald Edvard Mølmen; Dalen, Håvard. Importance of length and external diameter in left ventricular geometry. Normal values from the HUNT Study. Open heart 2016 ;Volum 3.(2) s. e000465-
  18. Malmo, Vegard; Nes, Bjarne; Amundsen, Brage H.; Tjønna, Arnt Erik; Støylen, Asbjørn; Rossvoll, Ole; Wisløff, Ulrik; Loennechen, Jan Pål. Aerobic interval training reduces the burden of Atrial fibrillation in the short term: A randomized trial. Circulation 2016 ;Volum 133.(5) s. 466-473
  19. Nestaas, Eirik; Støylen, Asbjørn; Fugelseth, Drude. Speckle tracking using gray-scale information from tissue Doppler recordings versus regular gray-scale recordings in term neonates. Ultrasound in Medicine and Biology 2016 ;Volum 42.(11) s. 2599-2605
  20. Leinan, Ingeborg Megård; Aamot, Inger Lise; Støylen, Asbjørn; Karlsen, Trine; Wisløff, Ulrik. Upper arm venous compliance and fitness in stable coronary artery disease patients and healthy controls.. Clinical Physiology and Functional Imaging 2015
  21. Leinan, Ingeborg Megård; Grønnevik, Øystein; Støylen, Asbjørn; Wisløff, Ulrik; Karlsen, Trine. A cross sectional study of arm venous compliance in fit healthy subjects.. Journal of Cardiovascular Research 2015
  22. Dalen, Håvard; Mølmen, Harald Edvard; Thorstensen, Anders; Støylen, Asbjørn; Schirmer, Henrik; Otterstad, Jan Erik.
    Ethnic-Specific Normative Reference Values for Echocardiographic LA and LV Size, LV Mass, and Systolic Function: The EchoNoRMAL Study. JACC Cardiovascular Imaging 2015 ;Volum 8.(6) s. 656-665Echocardiographic Normal Ranges Meta-Analysis of the Left Heart Collaboration.     Ethnic-Specific Normative Reference Values for Echocardiographic LA and LV Size, LV Mass, and Systolic Function: The EchoNoRMAL Study.JACC Cardiovasc Imaging. 2015 Jun;8(6):656-65.
  23. Karlsen T, Leinan IM, Bækkerud FH, Lundgren KM, Tari A, Steinshamn SL, Støylen A, Rognmo Ø. How to Be 80 Year Old and Have a VO2max of a 35 Year Old. Case Rep Med. 2015;2015:909561.
  24. Stensvold D, Viken H, Rognmo Ø, Skogvoll E, Steinshamn S, Vatten LJ, Coombes JS, Anderssen SA, Magnussen J, Ingebrigtsen JE, Fiatarone Singh MA, Langhammer A, Støylen A, Helbostad JL, Wisløff U. A randomised controlled study of the long-term effects of exercise training on mortality in elderly people: study protocol for the Generation 100 study. BMJ Open. 2015 Feb 12;5(2):e007519.
  25. Aamot, Inger Lise; Karlsen, Trine; Dalen, Håvard; Støylen, Asbjørn. Long-term exercise adherence after high-intensity interval training in cardiac rehabilitation: a randomized study. Physiotherapy Research International 2016 ;Volum 21.(1) s. 54-64
  26. Nestaas, Eirik; Fugelseth, Drude; Støylen, Asbjørn. Automated, Objective and Expert-Independent Assessment of the Analyzability of Strain and Strain Rate in Tissue Doppler Images in Term Neonates by Analysis of Beat-to-Beat Variation. Ultrasound in Medicine and Biology 2014 ;Volum 40.(3) s. 637-642
  27. Aamot, Inger Lise; Forbord, Siv Hege; Gustad, Kjersti; Løckra, Vibeke; Stensen, Andreas; Berg, Astrid Tarlebø; Dalen, Håvard; Karlsen, Trine; Støylen, Asbjørn.
    Home-based versus hospital-based high-intensity interval training in cardiac rehabilitation: A randomized study. European Journal of Preventive Cardiology 2014 ;Volum 21.(9) s. 1070-1078
  28. Nestaas, Eirik; Skranes, Janne Helen; Støylen, Asbjørn; Brunvand, Leif; Fugelseth, Drude. The myocardial function during and after whole-body therapeutic hypothermia for hypoxic–ischemic encephalopathy, a cohort study. Early Human Development 2014 ;Volum 90.(5) s. 247-252
  29. Eriksen, Beate Horsberg; Nestaas, Eirik; Hole, Torstein; Liestøl, Knut; Støylen, Asbjørn; Fugelseth, Drude. Myocardial function in term and preterm infants. Influence of heart size, gestational age and postnatal maturation. Early Human Development 2014 ;Volum 90.(7) s. 359-364
  30. Brekke B, Nilsen LC, Lund J, Torp H, Bjastad T, Amundsen BH, Stoylen A, Aase SA. Ultra-high Frame Rate Tissue Doppler Imaging.Ultrasound Med Biol. 2013 Nov 6. doi:pii: S0301-5629(13)01020-X. 10.1016/j.ultrasmedbio.2013.09.012. [Epub ahead of print]
  31. Eriksen BH, Nestaas E, Hole T, Liestøl K, Støylen A, Fugelseth D.Longitudinal assessment of atrioventricular annulus excursion by grey-scale m-mode and colour tissue Doppler imaging in premature infants.Early Hum Dev. 2013 Dec;89(12):977-82. doi: 10.1016/j.earlhumdev.2013.09.006. Epub 2013 Sep 27.
  32. Aamot IL, Forbord SH, Karlsen T, Støylen A. Does rating of perceived exertion result in target exercise intensity during interval training in cardiac rehabilitation? A study of the Borg scale versus a heart rate monitor. J Sci Med Sport. 2013 Aug 8. doi:pii: S1440-2440(13)00184-9. 10.1016/j.jsams.2013.07.019. [Epub ahead of print]
  33. Aamot IL, Forbord SH, Gustad K, Løckra V, Stensen A, Berg AT, Dalen H, Karlsen T, Støylen A. Home-based versus hospital-based high-intensity interval training in cardiac rehabilitation: a randomized study. Eur J Prev Cardiol. 2013 Apr 23. [Epub ahead of print]
  34. Eriksen BH, Nestaas E, Hole T, Liestøl K, Støylen A, Fugelseth D. Myocardial function in premature infants: a longitudinal observational study. BMJ Open. 2013 Mar 25;3(3). doi:pii: e002441. 10.1136/bmjopen-2012-002441. Print 2013.
  35. Thorstensen A, Dalen H, Hala P, Kiss G, D'hooge J, Torp H, Støylen A, Amundsen B. Three-dimensional echocardiography in the evaluation of global and regional function in patients with recent myocardial infarction: a comparison with magnetic resonance imaging. Echocardiography. 2013 Jul;30(6):682-92.
  36. Støylen A, Nes B, Karlsen T. Maksimal forventet hjertefrekvens (Maximum expected heart rate). Tidsskr Nor Laegeforen. 2012 Aug 21;132(15):1729.
  37. Nestaas E, Støylen A, Fugelseth D.Myocardial performance assessment in neonates by one-segment strain and strain rate analysis by tissue Doppler - a quality improvement cohort study. BMJ Open. 2012 Aug 24;2(4). pii: e001636. doi: 10.1136/bmjopen-2012-001636. Print 2012.
  38. Karlsen, Trine; Leinan, Ingeborg; Bækkerud, Fredrik H; Solberg, Frederic; Støylen, Asbjørn; Rognmo, Øivind; Wisløff, Ulrik. Total Hemoglobin Mass, Erythrocyte Volume and VO2max in Overweight and Normal Weight Healthy Subjects. Medicine & Science in Sports & Exercise 2012 ;Volum 44. s. 616-616
  39. Aamot, Inger Lise; Forbord, Siv Hege; Lockra, Vibeke; Gustad, Kjersti; Stensen, Andreas; Berg, Astrid Tarlebø; Dalen, Håvard; Karlsen, Trine; Støylen, Asbjørn.
    High-intensity Aerobic Interval Training In Cardiac Rehabilitation: A Matter Of Mode?. Medicine & Science in Sports & Exercise 2012 ;Volum 44. s. 229-229
  40. Thorstensen A, Amundsen BH, Dalen H, Hala P, Kiss G, Aase SA, Torp H, Støylen A. Strain rate imaging combined with wall motion analysis gives incremental value in direct quantification of myocardial infarct size. European Heart Journal-Cardiovascular Imaging 2012 ;Volum 13.(11) s. 914-921
  41. Leinan, Ingeborg; Gronnevik, Øystein; Støylen, Asbjørn; Wisloff, Ulrik; Karlsen, Trine.  Cardiovascular Fitness is Associated with Venous Compliance in Healthy Subjects. Medicine & Science in Sports & Exercise 2012 ;Volum 44. s. 385-385
  42. Nes BM, Janszky I, Wisløff U, Støylen A, Karlsen T. Age-predicted maximal heart rate in healthy subjects: The HUNT Fitness Study.Scandinavian Journal of Medicine & Science in Sports 2013 ;Volum 23.(6) s. 697-704
  43. Molmen HE, Wisloff U, Aamot IL, Stoylen A, Ingul CB. Aerobic interval training compensates age related decline in cardiac function. Scand Cardiovasc J. 2012 Jan 24. [Epub ahead of print]
  44. Tyldum EV, Backe B, Støylen A, Slørdahl SA. Maternal left ventricular and endothelial functions in preeclampsia. Acta Obstetricia et Gynecologica Scandinavica 2012 ;Volum 91.(5) s. 566-573
  45. Thorstensen A, Dalen H, Amundsen BH, Støylen A. Peak systolic velocity indices are more sensitive than end-systolic indices in detecting contraction changes assessed by echocardiography in young healthy humans.Eur J Echocardiogr. 2011 Dec;12(12):924-30.
  46. Moholdt T, Aamot IL, Granøien I, Gjerde L, Myklebust G, Walderhaug L, Hole T, Graven T, Stølen T, Mølmen-Hansen HE, Støylen A, Skogvoll E, Slørdahl SA, Wisløff U. Long-term follow-up after cardiac rehabilitation A randomized study of usual care exercise training versus aerobic interval training after myocardial infarction. Int J Cardiol. 2011 Nov 3;152(3):388-90. Epub 2011 Sep 9.
  47. Moholdt T, Aamot IL, Granøien I, Gjerde L, Myklebust G, Walderhaug L, Brattbakk L, Hole T, Graven T, Stølen TO, Amundsen BH, Mølmen-Hansen HE, Støylen A, Wisløff U, Slørdahl SA.Aerobic interval training increases peak oxygen uptake more than usual care exercise training in myocardial infarction patients: a randomised, controlled study. Clinical Rehabilitation 2012 ;Volum 26.(1) s. 33-44
  48. Fugelseth D, Ramstad HB, Kvehaugen AS, Nestaas E, Støylen A, Staff AC. Myocardial function in offspring 5-8years after pregnancy complicated by preeclampsia. Early Hum Dev. 2011 Aug;87(8):531-5. Epub 2011 May 7.
  49. Unzek S, Popovic ZB, Marwick TH; Diastolic Guidelines Concordance Investigators. Effect of recommendations on interobserver consistency of diastolic function evaluation. JACC Cardiovasc Imaging. 2011 May;4(5):460-7.
  50. Molmen-Hansen HE, Stolen T, Tjonna AE, Aamot IL, Ekeberg IS, Tyldum GA, Wisloff U, Ingul CB, Stoylen A. Aerobic interval training reduces blood pressure and improves myocardial function in hypertensive patients. Eur J Cardiovasc Prev Rehabil. 2012 ;Volum 19.(2) s. 151-160
  51. Støylen A, Conraads V, Halle M, Linke A, Prescott E, Ellingsen O. Controlled study of myocardial recovery after interval training in heart failure: SMARTEX-HF - rationale and design. European Journal of Preventive Cardiology 2012 ;Volum 19.(4) s. 813-821
  52. Dalen H, Thorstensen A, Romundstad PR, Aase SA, Stoylen A, Vatten LJ. Cardiovascular Risk Factors and Systolic and Diastolic Cardiac Function: A Tissue Doppler and Speckle Tracking Echocardiographic Study. J Am Soc Echocardiogr. 2011 Mar;24(3):322-332.e6. Epub 2011 Jan 17.]
  53. Hovland A, Staub UH, Bjørnstad H, Prytz J, Sexton J, Støylen A, Vik-Mo H. Gated SPECT Offers Improved Interobserver Agreement Compared With Echocardiography. Clin Nucl Med. 2010 Dec;35(12):927-30.
  54. Helgerud J, Karlsen T, Kim WY, Høydal KL, Støylen A, Pedersen H, Brix L, Ringgaard S, Kværness J, Hoff J. Interval and Strength Training in CAD Patients. Int J Sports Med. 2011 ;Volum 32.(1) s. 54-59
  55. Nestaas E, Støylen A, Brunvand L, Fugelseth D. Longitudinal strain and strain rate by tissue Doppler are more sensitive indices than fractional shortening for assessing the reduced myocardial function in asphyxiated neonates.Cardiol Young. 2011 Feb;21(1):1-7. Epub 2010 Oct 6.
  56. Aase SA, Snare SR, Dalen H, Støylen A, Orderud F, Torp H. Echocardiography without electrocardiogram.Eur J Echocardiogr. 2011 12(1). 3-10 Epub 2010 Sep 3
  57. Ingul CB, Tjonna AE, Stolen TO, Stoylen A, Wisloff U. Impaired cardiac function among obese adolescents: effect of aerobic interval training. Arch Pediatr Adolesc Med. 2010 Sep;164(9):852-9.
  58. Dalen H, Thorstensen A, Vatten LJ, Aase SA, Stoylen A. Reference Values and Distribution of Conventional Echocardiographic Doppler Measures and Longitudinal Tissue Doppler Velocities in a Population Free from Cardiovascular Disease. Circ Cardiovasc Imaging. Sep 1;3(5):614-22. Epub 2010 Jun 25.
  59. Aase SA, Björk Ingul C, Thorstensen A, Torp H, Stoylen A. Aortic Valve Closure: Relation to Tissue Velocities by Doppler and Speckle Tracking in Patients with Infarction and at High Heart Rates. Echocardiography. 2010. 2010 Apr;27(4):363-9. Epub 2010 Mar 15.
  60. Ingul CB, Malm S, Refsdal E, Hegbom K, Amundsen BH, Støylen A. Recovery of Function After Acute Myocardial Infarction Evaluated by Tissue Doppler Strain and Strain Rate.J Am Soc Echocardiogr. 2010 Apr;23(4):432-8. Epub 2010 Mar 3.
  61. Thorstensen A, Dalen H, Amundsen BH, Aase SA, Stoylen A. Reproducibility in echocardiographic assessment of the left ventricular global and regional function, the HUNT study. Eur J Echocardiogr. 2010 Mar;11(2):149-56.
  62. Dalen H, Thorstensen A, Aase SA, Ingul CB, Torp H, Vatten LJ, Stoylen A. Segmental and global longitudinal strain and strain rate based on echocardiography of 1266 healthy individuals: the HUNT study in Norway. Eur J Echocardiogr. 2010 Mar;11(2):176-83.
  63. Aamot IL, Moholdt T, Amundsen BH, Solberg HS, Mørkved S, Støylen A. Onset of exercise training 14 days after uncomplicated myocardial infarction: a randomized controlled trial. Eur J Cardiovasc Prev Rehabil. 2010 Aug;17(4):387-92. Epub 2009 Nov 24.
  64. Hovland A, Bjørnstad H, Prytz J, Støylen A, Vik-Mo H. Feasibility of Using Tissue Doppler Velocities in Stress Echo during Upright Bicycle Exercise. Hovland A, Bjørnstad H, Prytz J, Støylen A, Vik-Mo H. Echocardiography. 2009 Oct;26(9):1041-9.
  65. Nestaas E, Støylen A, Brunvand L, Fugelseth D. Tissue Doppler derived longitudinal strain and strain rate during the first 3 days of life in healthy term neonates. Pediatr Res. 2009 Mar;65(3):357-62.
  66. Karlsen T, Helgerud J, Støylen A, Lauritsen N, Hoff J. Maximal strength training restores walking mechanical efficiency in heart patients. Karlsen T, Helgerud J, Støylen A, Lauritsen N, Hoff J.
    Int J Sports Med. 2009 May;30(5):337-42.

  67. Rustad LA, Amundsen BH, Slørdahl SA, Støylen A. Upright bicycle exercise echocardiography in patients with myocardial infarction shows lack of diastolic, but not systolic, reserve: a tissue Doppler study. Eur J Echocardiogr. 2009 Jun;10(4):503-8.

  68. Amundsen BH, Crosby J, Steen PA, Torp H, Slørdahl SA, Støylen A. Regional myocardial long-axis strain and strain rate measured by different tissue Doppler and speckle tracking echocardiography methods: a comparison with tagged magnetic resonance imaging. Eur J Echocardiogr. 2009 Mar;10(2):229-37.

  69. Søfteland Sandvei M, Amundsen BH, Olav Haugen B, Støylen A, Slørdahl SA, Vik A. Left ventricular function during the acute phase of a subarachnoid haemorrhage. Scand Cardiovasc J. 2009 Apr;43(2):110-6.PMID: 19294578 

  70. Nestaas E, Støylen A, Fugelseth D. Optimal types of probe, and tissue Doppler frame rates, for use during tissue Doppler recording and off-line analysis of strain and strain rate in neonates at term. Cardiol Young. 2008 Oct;18(5):502-11.

  71. Karlsen T, Hoff J, Støylen A, Skovholdt MC, Gulbrandsen Aarhus K, Helgerud J. Aerobic interval training improves VO2 peak in coronary artery disease patients; no additional effect from hyperoxia. Scand Cardiovasc J. 2008 Oct;42(5):303-9.

  72. Aase SA, Torp H, Støylen A. Aortic valve closure: relation to tissue velocities by Doppler and speckle tracking in normal subjects. Eur J Echocardiogr. 2008 Jul;9(4):555-9.

  73. Høydal, Kjetil Laurits; Helgerud, Jan; Karlsen, Trine; Støylen, Asbjørn; Steinshamn, Sigurd Loe; Hoff, Jan. Patients with coronary artery- or chronic obstructive pulmonary disease walk with mechanical inefficiency.. Scandinavian Cardiovascular Journal 2007;41(6):405-410
  74. Wisløff U, Støylen, A, Loennechen, JP Bruvold, M, Rognmo, O Haram, PM, Tjønna, AE, Helgerud, J, Slørdahl, SA, Lee, SJ, Videm, V, Bye, SA,  Smith, GL, Najjar, SM 6, Ellingsen, O, Skjarpe, T. Superior cardiovascular effect of aerobic interval-training versus moderate continuous training in heart failure patients: A randomized study. Circulation. 2007 Jun 19;115(24):3086-94.
  75. Brekke S, Rabben SI, Stoylen A, Haugen A, Haugen GU, Steen EN, Torp H. Volume stitching in three-dimensional echocardiography: distortion analysis and extension to real time.Ultrasound Med Biol. 2007 May;33(5):782-96.
  76. Skjold, Arne; Amundsen, Brage H.; Wiseth, Rune; Støylen, Asbjørn; Haraldseth, Olav; Larsson, Henrik; Jynge, Per. Manganese Dipyridoxyl-Diphosphate (MnDPDP) as a Viability Marker in Patients With Myocardial Infarction. Journal of Magnetic Resonance Imaging 2007;26(3):720-727
  77. Ingul CB, Stoylen A, Slordahl SA, Wiseth R, Burgess M, Marwick TH. Automated analysis of myocardial deformation at dobutamine stress echocardiography: an angiographic validation. J Am Coll Cardiol. 2007 Apr 17;49(15):1651-9.
  78. Nestaas, Eirik; Støylen, Asbjørn; Sandvik, Leiv; Brunvand, Leif; Fugelseth, Drude. Feasibility and reliability of strain and strain rate measurement in neonates by optimizing the analysis parameters settings. Ultrasound in Medicine and Biology 2007;33(2):270-278
  79. Amundsen, Brage H.; Helle-Valle, T; Edvardsen, Thor; Torp, Hans; Crosby, Jonas; Lyseggen, Erik; Støylen, Asbjørn; Ihlen, Halfdan; Lima, Joao A. C.; Smiseth, O; Slørdahl, Stig Arild. Noninvasive myocardial strain measurement by speckle tracking echocardiography - Validation against sonomicrometry and tagged magnetic resonance imaging. Journal of the American College of Cardiology 2006;47(4):789-793
  80. Aase, Svein Arne; Støylen, Asbjørn; Ingul, Charlotte Bjørk; Frigstad, Sigmund; Torp, Hans. Automatic timing of aortic valve closure in apical tissue Doppler images. Ultrasound in Medicine and Biology 2006;32(1):19-27
  81. Malm S, Frigstad S, Stoylen A, Torp H, Sagberg E, Skjarpe T.   Effects of ultrasound contrast during tissue velocity imaging on regional left ventricular velocity, strain, and strain rate measurements. J Am Soc Echocardiogr. 2006 Jan;19(1):40-7.
  82. Ingul CB, Stoylen A,. Slordahl SA. Recovery of Stunned Myocardium in Acute Myocardial Infarction Quantified by Strain Rate Imaging. A Clinical Study.  J Am Soc Echocardiogr 2005;18:401-10
  83. Ingul CB, Torp H, Aase SA, Berg  S, Stoylen A, Slordahl SA. Automated Methods of Analyzing Strain Rate and Strain, Feasibility and Clinical Implication. J Am Soc Echocardiogr 2005;18:411-8
  84. Slordahl SA, Madslien VO, Stoylen A, Kjos A, Helgerud J, Wisloff U. Atrioventricular plane displacement in untrained and trained females. Med Sci Sports Exerc. 2004 Nov;36(11):1871-5.
  85. Støylen A and Skjaerpe T. Systolic long axis function of the left ventricle. Global and regional information. Scandinavian cardiovascular journal 2003; 37(5): 253-8
  86. Stoylen A, Ingul CB, Torp H. Strain and Strain Rate Parametric Imaging. A new Method for Post Processing to 3- / 4-dimensional images from three standard apical planes. Preliminary Data on Feasibility, Artefact and Regional Dyssynergy Visualisation. Cardiovascular Ultrasound 2003; 1(1):11
  87. Stoylen A, Wisløff U, Slørdahl S. Left ventricular mechanics during exercise, A Doppler and tissue Doppler study. Eur J Echocardiography 2003; 4: 286-91
  88. Støylen A, Sletvold O and Skjaerpe T. Post systolic shortening in non-obstructive hypertrophic cardiomyopathy with delayed emptying of the apex. A Doppler flow, tissue Doppler and strain rate imaging case study. Echocardiography 2003: 20(2): 167-71
  89. Støylen A, Skjelvan G, Skjaerpe T. Flow propagation velocity is not a simple index of diastolic function in early filling. A comparative study of early diastolic strain rate and strain rate propagation, flow and flow propagation in normal and reduced diastolic function. Cardiovasc Ultrasound. 2003;1(1):3
  90. Zabalgoitia M, Berning J, Koren MJ, Stoylen A, Nieminen MS, Dahlof B, Devereux RB; The LIFE Study Investigators. Impact of coronary artery disease on left ventricular systolic function and geometry in hypertensive patients with left ventricular hypertrophy (the LIFE study). Am J Cardiol. 2001 Sep 15;88(6):646-50.
  91. Jan P. Loennechen, Asbjørn Støylen, Vidar beisvåg, Ulrik Wisløff, Øyvind Ellingsen. Regional Expressio of endothelin-1, ANF, IGF-1 and mechanical load in the infarcted rat heart.  Am J Physiol Heart Circ Physiol 2001, 280: H2902 H2910
  92. Wisløff  U, Helgerud  J, Støylen A, Ellingsen Ø. Atrioventricular Plane Displacement and Left Ventricular Function, at Rest and during Exercise, in Female Endurance Athletes. Med. Sci. Sports Exerc.2001, 33 (9):1503-10
  93. Stig A. Slørdahl, Steinar Bjærum, Brage H. Amundsen, Asbjørn Støylen, Andreas Heimdal, Stein Inge Rabben,  Hans Torp. High frame rate strain rate imaging of the ventricular septum in healthy subjects. Eur J Ultrasound 2001; 14: 149-55.
  94. Støylen A, Slørdahl S, Skjelvan GK, Heimdal A, Skjaerpe T. Strain Rate Imaging in Normal and Reduced Diastolic Function: Comparison with Pulsed Doppler Tissue Imaging of the Mitral Annulus. J Am Soc Echocardiogr 2001 Apr;14(4):264-74.
  95. Støylen A, Heimdal A Bjørnstad K, Wiseth R, Vik-Mo H, Torp H, Angelsen B, Skjærpe T. Strain Rate Imaging by Ultrasound in the Diagnosis of Coronary Artery Disease.  J Am Soc Echocardiogr 2000;13(12):1053-64
  96. Rabben SI, Torp AH, Stoylen A, Slordahl S, Bjornstad K, Haugen BO, Angelsen B. Semiautomatic contour detection in ultrasound M-mode images. Ultrasound Med Biol 2000 Feb 1;26(2):287-296
  97. Stoylen A, Heimdal A, Bjornstad K, Torp H, Skjaerpe T. Strain Rate Imaging in the diagnosis of regional dysfunction of the left ventricle. Echocardiography 1999; 16(4): 321-9
  98. Heimdal A, Stoylen A, Torp H, Skjaerpe T. Real-time strain rate imaging of the left ventricle by ultrasound. J Am Soc Echocardiogr 1998 Nov;11(11):1013-9
  99. Gundersen JH, Stoylen A. Finnes det vanskelige pasienter? Lege-pasientforholdet I et kommunikasjonsteoretisk perspektiv.Tidsskr Nor Laegeforen 1984 Feb 29;104(6):440-2

Letters, Reviews and Book Chapters

  1. Støylen A. Strain and Strain Rate: Different Preload Dependence? J Am Soc Echocardiogr. 2018 Mar 10. pii: S0894-7317(18)30045-2. doi: 10.1016/j.echo.2018.01.020. [Epub ahead of print]
  2. Støylen A. Trening i kardiovaskulær profylakse og behandling. Hjerteforum (journal of the Norwegian society of cardiology) 2013 vol 26, Aug, 13 - 15
  3. Støylen A. Er dette nok? Letter Tidsskr Nor Laegeforen. 2013 May 28;133(10)
  4. Støylen A, Nes B, Karlsen T. Maksimal forventet hjertefrekvens. Kommentarartikkel. Tidsskr Nor Laegeforen. 2012 Aug 21;132(15):1729.
  5. Støylen A. Possible benefit of cardiac resynchronization therapy with ejection fraction >35%. Letter. European Journal of Heart Failure 2010 Oct;12(10):1140-1
  6. Moholdt T, Støylen A, Tyni-Lenné R, Cider Å, Schaufelberger M, Wisløff U. Trening ved hjertesvikt. Aktivitetshåndboken. Oslo 2009. Helsedirektoratet. IS-1592.
  7. Støylen, Asbjørn. Three-dimensional reconstruction of strain measurements and measurement of strain in three dimensions.. In: Marwick TH, Yu C-M and Sun JP (Ed.). Myocardial Imaging. Massachusetts USA, Oxford UK, Victoria Australia: Blackwell Publishing 2007. ISBN 978-1-4051-6113-8. s. 265-272
  8. Støylen, Asbjørn. Strain Echocardiography. In: Shiota T (Ed.). 3D Echocardiography. Hampshire UK: Informa Healthcare 2007. ISBN 1-84184-632-5. s. 141-151
  9. Støylen A. Reply to letter. European Journal of Echocardiography 2004;5:319
  10. Asbjørn Støylen. Myocardial deformation imaging by ultrasound / echocardiography Tissue Doppler and Speckle tracking NTNU 2004. Full revision 2011.  http://folk.ntnu.no/stoylen/strainrate/ 
  11. Støylen, Asbjørn. Basic ultrasound, echocardiography and Doppler for clinicians. NTNU 2004. Revised 2010. http://folk.ntnu.no/stoylen/strainrate/Ultrasound/
  12. Støylen, Asbjørn. Measurements of myocardial deformation - strain and strain rate - by ultrasound.NTNU 2010 http://folk.ntnu.no/stoylen/strainrate/measurements.html
  13. Støylen, Asbjørn. Is deformation imaging - strain and strain rate by ultrasound useful? NTNU 2010 http://folk.ntnu.no/stoylen/strainrate/Utility.html 
  14. Støylen, Asbjørn. Mathematics of strain and strain rate.NTNU 2004. Updated 2010.  http://folk.ntnu.no/stoylen/strainrate/mathemathics/
  15. Smiseth OA, Stoylen A, Ihlen H. Tissue Doppler imaging for the diagnosis of coronary artery disease. Curr Opin Cardiol. 2004 Sep;19(5):421-9
  16. Støylen A and Bjørnstad K. Stressekkokardiografi. Tidsskr Nor Lægeforen (Journal of the Norwegian Medical association) 2004 124(3) 342 - 345. Invited review
  17. Asbjørn Støylen: Stress Echocardiography. Chapter in internet based basic course in cardiology (Norwegian) by the Norwegian Medical Association. http://lupin.legeforeningen.no/kurs/index.cfm?file=StartLessonGruppe.cfm&kid=18&grKurs=47
  18. Stig A. Slørdahl, Sevald Berg, Asbjørn Støylen, Stein Samstad, Hans Torp. Left ventricular volumes from three-dimensional echocardiography by rapid freehand scanning using digital scan line data. 2002. www.ifbt.ntnu.no/~stigs/innholdhjemmeside/3Dvolum.pdf
  19. Støylen A. Bedømmelse av regional venstre ventrikkelfunksjon med vevsdopplerbaserte metoder: Tissue velocity, Strain Rate Imaging. Tissue Tracking, og Farge M-mode. Invited review Hjerteforum (organ of the Norwegian Society of Cardiology).nr 2 2002, 33-43.

Presentations with proceedings article

  1. Wigen, Morten Smedsrud; Salles, Sebastien; Støylen, Asbjørn; Løvstakken, Lasse.
    The continuous cardiac thick-slice acquisition - for simultaneous flow and tissue motion estimation. IEEE International Ultrasonics Symposium; 2018-10-22 - 2018-10-24
  2. Salles, Sebastien; Løvstakken, Lasse; Espeland, Torvald; Rodriguez-Molares, Alfonso; Aase, Svein Arne; Støylen, Asbjørn; Torp, Hans.
    4D mechanical wave velocity mapping using clutter filter wave imaging. Healthy Subjects versus patients. IEEE IUS 2018; 2018-10-22 - 2018-10-25
  3. Salles, Sebastien; Rodriguez-Molares, Alfonso; Støylen, Asbjørn; Bjåstad, Tore Grüner; Aase, Svein Arne; Løvstakken, Lasse; Torp, Hans.
    3D myocardial mechanical wave measurements using high frame rate ultrasound imaging and Clutter filter wave imaging: Towards a 3D myocardial elasticity mapping. Proceedings - IEEE Ultrasonics Symposium 2017
  4. Brekke, Birger; Aase, Svein Arne; Torp, Hans; Bjåstad, Tore; Støylen, Asbjørn.
    3D Tissue Doppler imaging with ultra high frame rate. EEE International Ultrasonics Symposium 2011; 2011-10-18 - 2011-10-21EEE International Ultrasonics Symposium Proceedings 2012
  5. Brekke, Svein; Rabben, Stein Inge; Støylen, Asbjørn; Steen, Erik; Torp, Hans. Real-time volume stitching in 4D echocardiography [Vitenskapelig foredrag]. IEEE UFFC Ultrasonic Symposium; 18.09.2005 - 21.09.2005
  6. S. A. Aase, A. Støylen, C. B. Ingul, S. Frigstad and H. Torp. Automated Detection of Aortic Valve Closure in Apical Tissue Doppler Images. 2004 IEEE International Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniversary Joint Conference Proceedings.
  7. Torp AH, Rabben SI, Stoylen A, et al. Automatic Detection and Tracking of Left Ventricular Landmarks in Echocardiography. Proceedings IEEE Ultrasonics Symposium, 2004;474–477.

Abstracts:

  1. Letnes, Jon Magne; Nes, Bjarne; Vaardal-Lunde, Kristina; Bratt Slette, Martine; Mølmen, Harald Edvard; Aspenes, Stian Thoresen; Støylen, Asbjørn; Wisløff, Ulrik; Dalen, Håvard.
    Associations of Left Atrial Volume with Cardiorespiratory Fitness and Indices of Left Ventricular Diastolic Function in a Fit Population Sample. ESC Congress 2018; 2018-08-25 - 2018-08-29
  2. Daae, Annichen Søyland; Støylen, Asbjørn; Løvstakken, Lasse; Wigen, Morten Smedsrud.
    Initial diastolic vortex formation in the left ventricle relates to the atrioventricular plane motion of the outflow tract. Euro Echo 2018; 2018-12-05 - 2018-12-08
  3. Grue, Jahn Frederik; Storve, Sigurd; Torp, Hans; Mjølstad, Ole Christian; Støylen, Asbjørn; Haugen, Bjørn Olav; Dalen, Håvard.
    Reference values for automatic measurements of tissue Doppler indices. ESC Congress 2018; 2018-08-25 - 2018-08-29
  4. Nilsen, Lars Christian Lervik; Brekke, Birger; Missant, Carlo; Haemers, Peter; Tong, Ling; Ortega, Alejandra; Sutherland, George Ross; D'hooge, Jan R M; Støylen, Asbjørn.
    Detection of mechanical activation by three-dimensional ultra-high frame rate tissue Doppler imaging in an open-chest pig model. EuroEcho-Imaging 2014; 2014-12-03 - 2014-12-06
  5. Nilsen, Lars Christian Lervik; Lund, Joakim Schistad; Brekke, Birger; Støylen, Asbjørn.
    Strain rate measurements with ultra-high frame rate tissue Doppler imaging. EuroEcho-Imaging 2013; 2013-12-11 - 2013-12-15

  6. Aamot, Inger Lise; Forbord, Siv Hege; Løckra, Vibeke; Gustad, Kjersti; Stensen, Andreas; Berg, Astrid Tarlebø; Dalen, Håvard; Karlsen, Trine; Støylen, Asbjørn.

    Feasibility of aerobic interval training in cardiac rehabilitation. 59th annual meeting ACSM; 2012-05-30 - 2012-06-02

  7. Aamot, Inger Lise; Forbord, Siv Hege; Løckra, Vibeke; Gustad, Kjersti; Stensen, Andreas; Berg, Astrid Tarlebø; Dalen, Håvard; Karlsen, Trine; Støylen, Asbjørn.
    High-intensity aerobic interval training in cardiac rehabilitation: a matter of mode?. 3rd World Congress of Exercise is Medicine; 2012-05-30 - 2012-06-02
  8. Karlsen, Trine; Leinan, Ingeborg; Bækkerud, Fredrik H; Solberg, Frederic; Støylen, Asbjørn; Wisløff, Ulrik; Rognmo, Øivind.
    Total Hb-Mass, Erythrocyte Volume and VO2max in Overweight and Normal Weight Healthy Subjects. American College of Sports Medicine; 2012-05-29 - 2012-06-02
  9. Karlsen, Trine; Leinan, Ingeborg Megård; Aamot, Inger-Lise; Støylen, Asbjørn. Safety of the Co-rebreathing Blood Volume Method in Patients with Coronary Artery Disease. EuroPrevent; 2014-05-08 - 2014-05-10
  10. Karlsen, Trine; Nes, Bjarne; Tjønna, Arnt Erik; Engstrøm, Morten; Støylen, Asbjørn; Wisløff, Ulrik; Steinshamn, Sigurd Loe.
    Aerobic interval exercise training improves the apnea-hypopnea index and self-reported sleepiness in obstructive sleep apnea patients. ESC; 2014-08-30 - 2014-09-03
  11. Leinan, Ingeborg; Gronnevik, Øystein; Støylen, Asbjørn; Wisloff, Ulrik; Karlsen, Trine.
    Cardiovascular Fitness is Associated with Venous Compliance in Healthy Subjects. Medicine & Science in Sports & Exercise 2012 ;Volum 44. s. 385-385
  12. Aamot, Inger Lise; Forbord, Siv Hege; Løckra, Vibeke; Gustad, Kjersti; Stensen, Andreas; Tarlebø Berg, Astrid; Dalen, Håvard; Karlsen, Trine; Støylen, Asbjørn.
    Implementation of aerobic interval training in cardiac rehabilitation: a randomized clinical study. Europrevent; 2012-05-03 - 2012-05-05
  13. Aamot, Inger Lise; Karlsen, Trine; Dalen, Håvard; Støylen, Asbjørn.
    Exercise adherence after aerobic interval training in patients with coronary artery disease. Annual meeting European college of Sport Sciences; 2012-07-04 - 2012-07-07
  14. Leinan, Ingeborg; Støylen, Asbjørn; Wisløff, Ulrik; Karlsen, Trine.
    Cardiovascular fitness is associated with venous compliance in healthy subjects. Europrevent; 2012-05-03 - 2012-05-05
  15. Brekke, Birger; Aase, Svein Arne; Torp, Hans; Bjåstad, Tore; Støylen, Asbjørn.
    3D Tissue Doppler imaging with ultra high frame rate. EEE International Ultrasonics Symposium 2011; 2011-10-18 - 2011-10-21
  16. Hansen, Harald Edvard Mølmen; Støylen, Asbjørn; Thorstensen, Anders; Torp, Hans; Dalen, Håvard.
    Left ventricular strain by indexed motion mode - normal values according to age and sex. EuroEcho 2011; 2011-12-07 - 2011-12-10
  17. Dalen, Håvard; Thorstensen, Anders; Hansen, Harald Edvard Mølmen; Torp, Hans; Støylen, Asbjørn.
    Comparison of longitudinal strain by m-mode and a combination of tissue Doppler and speckle tracking. EuroEcho 2011; 2011-12-07 - 2011-12-10
  18. Aase, Svein Arne; Snare, Sten Roar; Dalen, Håvard; Støylen, Asbjørn; Orderud, Fredrik; Torp, Hans.
    Echocardiography without electrocardiogram. European Journal of Echocardiography 2011 ;Volum 12.(1) s. 3-10
  19. Leinan, Ingeborg; Støylen, Asbjørn; Wisløff, Ulrik; Karlsen, Trine; Øystein, Grønnevik.
    Cardiovascular fitness and venous compliance. CHFR Synopsium; 2011-09-15
  20. Nes, Bjarne Martens; Støylen, Asbjørn; Wisløff, Ulrik; Karlsen, Trine.
    Prediction of maximal heart rate in clinical settings. Norsk Cardiologisk Selskaps Vintermøte; 2011-02-03 - 2011-02-05
  21. Nes, Bjarne Martens; Wisløff, Ulrik; Støylen, Asbjørn; Karlsen, Trine.
    Age-Predicted Maximal Heart Rate in Healthy Subjects- The HUNT Fitness Study. EuroPrevent Conference; 2011-04-14 - 2011-04-16
  22. Brekke, Birger; Aase, Svein Arne; Torp, Hans; Støylen, Asbjørn; Bjåstad, Tore.
    Mechanical waves in the heart. The 2nd National PhD conference in Medical Imaging and the Annual MedViz conference; 2011-01-17 - 2011-01-18
  23. Aamot, Inger Lise; Karlsen, Trine; Støylen, Asbjørn.
    Self-reported physical activity and aerobic capasity in patients entering cardiac rehabilitation. Årskongress ACSM; 2011-05-31 - 2011-06-04
  24. Nes, Bjarne Martens; Wisløff, Ulrik; Støylen, Asbjørn; Karlsen, Trine.
    Age-Predicted Maximal Heart Rate in 3320 Health Subjects- The HUNT Fitness Study. American college of Sports Medicine; 2011-05-31 - 2011-06-04
  25. H E Moelmen-Hansen, U Wisloff, IL Aamot, A Stoylen, CB Ingul. Improved diastolic myocardial function in elderly after high intensity aerobic interval training, compared to old master athletes. Euroecho, Copenhagen; 2010-08-12 - 2010-11-12 P 887 In: European Journal of Echocardiography Supplements ( 2010 ) 11 ( Supplement 2 ), ii147
  26. H Dalen, A Thorstensen, PR Romundstad, SA Aase, A Stoylen, L Vatten. Longitudinal left ventricular strain is associated with cardiac risk factors in a healthy population. Euroecho, Copenhagen; 2010-08-12 - 2010-11-12 P 786 In: European Journal of Echocardiography Supplements ( 2010 ) 11 ( Supplement 2 ), ii120
  27. K Dale, A Stoylen. Is tissue Doppler based- and speckle tracking based strain and strain rate comparable at high heart rate? Euroecho, Copenhagen; 2010-08-12 - 2010-11-12 P718. In European Journal of Echocardiography Supplements ( 2010 ) 11 ( Supplement 2 ), ii101
  28. A Stoylen, S Aase, T Bjastad. Novel high frame rate sparse tissue Doppler imaging. Euroecho, Copenhagen; 2010-08-12 - 2010-11-12 P657. In: European Journal of Echocardiography Supplements ( 2010 ) 11 ( Supplement 2 ), ii86
  29. H Dalen, A Thorstensen, PR Romundstad, SA Aase, A Stoylen, L Vatten. Mitral annular tissue Doppler velocities are associated with cardiac risk factors in a healthy population.  Euroecho, Copenhagen; 2010-08-12 - 2010-11-12P337. In: European Journal of Echocardiography Supplements ( 2010 ) 11 ( Supplement 2 ), ii30
  30. Samuel Unzek, Allan L Klein, James D Thomas, Leonardo Rodriguez, Dominic Leung, Richard Troughton, Satoshi Nakatani, Asbjorn Stoylen, Jens-Uwe Voigt, Sudhir Wahi, Geneviève Derumeaux, Gillian A Whalley, Thomas H Marwick. Not Lost in Translation - An International Multicenter Study of Concordance of Diastolic Function Evaluation After the Publication of Guidelines. AHA Scientific sessions, Chicago Nov 13th - 17th.
  31. Dalen, Håvard; Thorstensen, Anders; Aase, Svein Arne; Vatten, Lars Johan; Støylen, Asbjørn.  Normal values for diastolic pulsed wave tissue Doppler and early mitral inflow. EuroEcho, Madrid; 2009-12-08
  32. Dalen, Håvard; Thorstensen, Anders; Aase, Svein Arne; Vatten, Lars Johan; Støylen, Asbjørn. Normal values for systolic mitral annular velocity assessed by pulsed wave tissue Doppler and color tissue Doppler. EuroEcho, Madrid; 2009-12-08
  33. Thorstensen, Anders; Dalen, Håvard; Amundsen, Brage H.; Aase, Svein Arne; Støylen, Asbjørn.  Head to head comparison of the reproducibility of different measures of the left ventricular systolic function. EuroEcho 2009, Madrid; 2009-12-08
  34. Ingul, Charlotte Bjørk; Malm, Siri; Refsdal, Erlend; Amundsen, Brage H.; Støylen, Asbjørn.  Early recovery of function after Acute Myocardial Infarction evaluated by tissue Doppler strain and strain rate. Euroecho 2009; 2009-12-09 - 2009-12-12
  35. Mølmen, Harald Edvard; Stølen, Tomas; Wisløff, Ulrik; Aamot, Ingerlise; Schjerve, Inga Ekeberg; Tyldum, Gjertrud Aunet; Tjønna, Arnt Erik; Ingul, Charlotte Bjørk; Støylen, Asbjørn. Aerobic interval training decreases blood pressure more than moderate intensity training in essential hypertension. ESC 2009; 2009-08-29 - 2009-09-02
  36. Mølmen, Harald Edvard; Stølen, Tomas; Wisløff, Ulrik; Aamot, Ingelise; Schjerve, Inga Ekeberg; Tyldum, Gjertrud Aunet; Tjønna, Arnt Erik; Ingul, Charlotte Bjørk; Støylen, Asbjørn. AEROBIC INTERVAL TRAINING IMPROVES MYOCARDIAL FUNCTION MORE THAN MODERATE INTENSITY TRAINING IN ESSENTIAL HYPERTENSION. ESC 2009; 2009-08-29 - 2009-09-02
  37. Moholdt, Trine; Aamot, Inger Lise; Stølen, Tomas; Støylen, Asbjørn; Granøien, Ingrid; Myklebust, Gitte; Walderhaug, Liv; Gjerde, Lisbeth; Hole, Torstein; Brattbakk, Line; Graven, Torbjørn; Mølmen, Harald Edvard; Wisløff, Ulrik; Slørdahl, Stig Arild. Effects of group exercise versus aerobic interval training upon peak oxygen uptake in myocardial infarction patients. European College of Sport Science 2009; 2009-06-24 - 2009-06-27
  38. Karlsen, Trine; Hoff, Jan; Høydal, Kjetil Laurits; Støylen, Asbjørn; Pedersen, Henrik; Brix, Lau; Ringgaard, Steffen; Kværness, Jørn; Helgerud, Jan. The Effect of Aerobic Interval- and Maximal Strength Training on Stroke Volume in Coronary Artery Disease Patients. European College of Sports Science; 2009-06-24 - 2009-06-27
  39. Ingul, Charlotte Bjørk; Malm, Siri; Refsdal, Erlend; Amundsen, Brage H.; Støylen, Asbjørn. Early recovery of function after Acute Myocardial Infarction evaluated by tissue Doppler strain and strain rate. Euroecho 2009; 2009-12-09 - 2009-12-12
  40. Dalen, Håvard; Thorstensen, Anders; Ingul, Charlotte Bjørk; Aase, Svein Arne; Vatten, Lars Johan; Støylen, Asbjørn. Normal values for diastolic strain rate from combined speckle tracking and Doppler tissue imaging. Preliminary data from the HUNT3-study. European Society of Cardiology Congress; 2009-08-29
  41. Dalen, Håvard; Thorstensen, Anders; Aase, Svein Arne; Vatten, Lars Johan; Støylen, Asbjørn.Normal values for systolic mitral annular velocity assessed by pulsed wave tissue Doppler and color tissue Doppler. EuroEcho; 2009-12-08
  42. Dalen, Håvard; Thorstensen, Anders; Aase, Svein Arne; Vatten, Lars Johan; Støylen, Asbjørn.  Normal values for diastolic pulsed wave tissue Doppler and early mitral inflow. EuroEcho; 2009-12-08
  43. Aase, Svein Arne; Torp, Hans; Amundsen, Brage H.; Bjåstad, Tore; Støylen, Asbjørn.
    Peak sysotlic velocity by upper edge of pulsed wave tissue Doppler spectrums cause overestimation compared to M-mode in normal subjects. Euroecho 2008, Lyon, 10-13 dec. European Journal of Echocardiography 2008 ;Volum 9. Suppl. 1 s. S7-S8
  44. Dalen, Håvard; Støylen, Asbjørn; Ingul, Charlotte Bjørk.
    Normal values for systolic strain and strain rate from combined speckle tracking and doppler tissue imaging. Preliminary data from the HUNT3-study. Euroecho 2008, Lyon, 10-13 dec. In:  European Journal of Echocardiography 2008 ;Volum 9. Suppl. 1
  45. Ingul, Charlotte Bjørk; Tjønna, Arnt Erik; Stølen, Tomas; Støylen, Asbjørn; Wisløff, Ulrik.
    Recovery of myocardial function by tissue Doppler among obese adolescents after aerobic interval training. Euroecho 2008, Lyon, 10-13 dec. European Journal of Echocardiography 2008 ;Volum 9. Suppl. 1
  46. Thorstensen, Anders; Dalen, Håvard; Amundsen, Brage H.; Støylen, Asbjørn.
    Sammenlikning av globale systoliske funksjonsparametre under inotropi. Ekkokardiografisk høstmøte 2008; Tønsberg, 17-18 okt. 
  47. Ingul, Charlotte Bjørk; Stølen, Tomas; Støylen, Asbjørn; Tjønna, Arnt Erik; Wisløff, Ulrik; Ødegård, Rønnaug.
    Endurance training improves contractility and stroke volume at rest and during exercise in obese adolescents, a tissue Doppler study. Norsk Cardiologisk Selskaps Vintermøte; Lillehammer, 01-03 jan 2008
  48. Sandvei, Marie Søfteland; Amundsen, Brage H.; Haugen, Bjørn Olav; Støylen, Asbjørn; Slørdahl, Stig Arild; Vik, Anne. Left ventricular function during the course of subarachnoid haemorrhage [Vitenskapelig foredrag]. European Congress of Neurosurgery; 02.09.2007 - 07.09.2007. Published in: Acta Neurochirurgica 2007:XXVIII-XXIX
  49. Karlsen, Trine; Hoff, Jan; Støylen, Asbjørn; Helgerud, Jan. Aerobic Interval Training Breathing 100% O2 Improves VO2peak Equally as Ambient Air Training in Coronary Patients . Medicine and Science in Sports and Exercise 2006;38(5):S327
  50. Rustad, Lene Anette; Amundsen, Brage H.; Slørdahl, Stig Arild; Støylen, Asbjørn. Left ventricular function in upright bicylce exercise in patients with myocardial infarction [Vitenskapelig foredrag]. EuroEcho 10 2006; 06.12.2006 - 09.12.2006
  51. Aase, Svein Arne; Støylen, Asbjørn; Ingul, Charlotte Bjørk; Frigstad, Sigmund; Torp, Hans. Automatic timing of aortic valve closure using tissue Doppler imaging. European Journal of Echocardiography 2005;6 Suppl 1
  52. Aase, Svein Arne; Torp, Hans; Støylen, Asbjørn. Relation between Aortic Valve Closure by high frame rate B-mode and end systolic events in Tissue Doppler velocity/time curves [Poster]. Euroecho 10; 06.12.2006 - 09.12.2006
  53.  Aase, Svein Arne; Torp, Hans; Støylen, Asbjørn. The duration of aortic valve closure [Poster]. Euroecho 10; 06.12.2006 - 09.12.2006
  54.  S. Aase, A.  Stoylen, C.B. Ingul, S. Frigstad, H. Torp. Automatic timing of aortic valve closure using tissue Doppler imaging. Abstract. Euroecho 9. Firenze 7 – 11 desember 2005. Publisert i: Eur J Echocardiography Vol 6, Abstracts Supplement, December 2005: S93
  55. S. Malm, A.  Stoylen, H. Torp, E. Sagberg, B.H. Amundsen, T. Skjarpe. Fractional myocardial infarct area size estimated by reconstructed 3-dimensional parametric strain rate imaging Abstract. Euroecho 9. Firenze 7 – 11 desember 2005. Citation: Eur J Echocardiography Vol 6 Abstracts Supplement, December 2005: S94
  56. K. Dale, A.  Stoylen. Is 2D strain by speckle tracking and tissue Doppler imaging comparable at high heart rate? Abstract. Euroecho 9. Firenze 7 – 11 desember 2005. Citation: Eur J Echocardiography Vol 6 Abstracts Supplement, December 2005: S91
  57. B.H. Amundsen, S. Malm, L.A. Rustad, J. Crosby, A.  Stoylen, H. Torp, S.A. Slordahl. Speckle tracking echocardiography: angle-independent strain measurements with better repeatability than strain from tissue Doppler imaging. Abstract. Euroecho 9. Firenze 7 – 11 desember 2005. Citation: Eur J Echocardiography Vol 6 Abstracts Supplement, December 2005: S91
  58. Wisløff, Ulrik; Støylen, Asbjørn; Loennechen, Jan Pål; Bruvold, Morten; Rognmo, Øivind; Haram, Per Magnus; Tjønna, Arnt Erik; Helgerud, Jan; Ellingsen, Øyvind; Skjærpe, Terje. Anti-remodelling effects of short-term high-intensity exercise training in patients with stable post-infarction heart failure [Vitenskapelig foredrag]. Cardiac rehabilitation and exercise physiology; 06.04.2005 - 10.04.2005. Publisert i: Abstract book; 2005
  59. Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Crosby, Jonas; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Måling av strain i myokard med speckle tracking – sammenligning av to ulike metoder [Poster]. Norsk Cardiologisk Selskaps Vårmøte 2005; 26.05.2005 - 28.05.2005. Publisert i: Hjerteforum Nr 3 ; 2005
  60. Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Crosby, Jonas; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Speckle tracking echocardiography: angle-independent strain measurements with better repeatability than strain from tissue Doppler imaging [Poster]. EuroEcho 9; 07.12.2005 - 10.12.2005. Publisert i: European Journal of Echocardiography Abstract Supplement; 2005
  61. Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Crosby, Jonas; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Speckle tracking ekkokardiografi for måling av lang-akse strain i venstre ventrikkel-sammenligning med strain fra vevs-Doppler [Vitenskapelig foredrag]. Norsk Cardiologisk Selskaps Vårmøte 2005; 26.05.2005 - 28.05.2005. Publisert i: Hjerteforum Nr 3; 2005
  62. Amundsen, Brage H.; Rognmo, Ø; Hatlen, Gudrun; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Improved diastolic function after endurance exercise training in patients with stable coronary artery disease [Vitenskapelig foredrag]. 6. Nordiske kongress i preventiv kardiologi og hjertrehabilitering; 16.06.2005 - 18.06.2005. Publisert i: Hjerteforum Nr. 3; 2005
  63. C. Bjork Ingul, A. Stoylen, S.A. Slordahl, K. Bjornstad, S.A. Aase, H. Torp, T.H. Marwick  Automated peak systolic strain rate increases the accuracy of dobutamine stress echocardiography.  Publisert i: European Heart Journal Abstract Book; 2005
  64. Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Two different speckle tracking echocardiography methods for measuring strain in the left ventricle [Poster]. Annual Congress of the European Society of Cardiology 2005; 03.09.2005 - 07.09.2005. Publisert i: European Heart Journal Abstract Book; 2005
  65. Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Improved feasibility and reduced variability of echocardiography myocardial strain measurements with 2D strain compared to strain by tissue Doppler imaging [Poster]. Annual Congress of the European Society of Cardiology 2005; 03.09.2005 - 07.09.2005. Publisert i: European Heart Journal Abstract Book; 2005
  66. Aase, Svein Arne; Støylen, Asbjørn; Ingul, Charlotte Bjørk; Frigstad, Sigmund; Torp, Hans. Automatic Timing of Aortic Valve Closure Using Tissue Doppler Imaging [Poster]. Euroecho9; 07.12.2005 - 10.12.2005 Publisert i: European Journal of Echocardiography Abstract Supplement; 2005
  67. Sagberg, Einar; Malm, Siri; Ingul, Charlotte Bjørk; Torp, Hans; Støylen, Asbjørn. Spatial velocity distribution for visualising velocity gradients. Feasibility and preliminary experience [Poster]. Euroecho 8; 01.12.2004 - 05.12.2004. Publisert i: European Journal of Echocardiography; 2004
  68.   21. Sagberg, Einar; Malm, Siri; Ingul, Charlotte Bjørk; Torp, Hans; Støylen, Asbjørn. Feasibility of 3D reconstructed parametric strain rate data in recognition og myocardial infarction [Vitenskapelig foredrag]. Euroecho 8; 01.12.2004 - 05.12.2004. Publisert i: European Journal of Echocardiography; 2004
  69.   22. Malm, Siri; Sagberg, Einar; Frigstad, Sigmund; Støylen, Asbjørn; Skjærpe, Terje. Effects of contrast on regional left ventricular strain and strain rate measurements.. European Journal of Echocardiography 2004;5 Suppl 1:153-153
  70.   23. Ingul, Charlotte Bjørk; Torp, Hans; Støylen, Asbjørn; Slørdahl, Stig Arild. Strain rate values based on tissue Doppler velocity or speckle tracking are different [Poster]. Euroecho 8; 01.12.2004 - 04.12.2004. Publisert i: European Journal of Echocardiography Supplement 1
  71.   24. Ingul, Charlotte Bjørk; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Automated quatification of dobutamine stress echocardiography by strain rate and strain is feasible [Poster]. Euroecho 8; 01.12.2004 - 04.12.2004. Publisert i: European Journal of Echocardiography Supplement 1
  72.   25. Helle-Valle, T; Edvardsen, Thor; Crosby, Jonas; Amundsen, Brage H.; Smith, Hans Jørgen; Rosen, BD; Torp, Hans; Støylen, Asbjørn; Ihlen, Halfdan; Smiseth, O. New Non-Invasive Method for Assessment of LV Rotation - Speckle Tracking Echocardiography. [Vitenskapelig foredrag]. EuroEcho 2004; 01.12.2004 - 04.12.2004. Publisert i: European Journal of Echocardiography 2004. Vol 5. Supplement 1. Abstract no. 660: S142.; 2004
  73.   26. Helle-Valle, T; Edvardsen, Thor; Crosby, Jonas; Amundsen, Brage H.; Smith, Hans Jørgen; Rosen, BD; Torp, Hans; Støylen, Asbjørn; Ihlen, Halfdan; Smiseth, O. New Non-Invasive Method for Assessment of LV Rotation - Speckle Tracking Echocardiography. [Vitenskapelig foredrag]. AHA Scientific Sessions 2004; 07.11.2004 - 10.11.2004. Publisert i: Circulation. Oct 2004, Vol 110 S Abstract no. 3125: III-674.; 2004
  74.   27. Amundsen, Brage; Helle-Valle, T; Torp, Hans; Crosby, Jonas; Støylen, Asbjørn; Ihlen, H; Smiseth, O; Slørdahl, Stig Arild. Ultrasound speckle tracking reduces angle dependency of myocardial strain estimates- Validation by sonomicrometry [Poster]. Euroecho 8; 01.12.2004 - 04.12.2004. Publisert i: European Journal of Echocardiography Supplement 1
  75.   28. Aase, Svein Arne; Støylen, Asbjørn; Ingul, Charlotte Bjørk; Frigstad, Sigmund; Torp, Hans. Automated Detection of Aortic Valve Closure in Apical Tissue Doppler Images [Poster]. IEEE UFFC symposium; 23.08.2004 - 27.08.2004
  76.   29. BH Amundsen, T Helle-Valle, H Torp, E Lyseggen, T Vartdal, A Støylen, OA Smiseth, SA Slørdahl. Validation of a new ultrasound method for measuring myocardial strain combining speckle tracking and tissue Doppler imaging. ESC congress. München, 28.08.04 -01.09.04. Eur. Heart. J. 2004 vol 25 abstract supplement.  746, (125)
  77.   30. Charlotte Bjork Ingul, Hans Torp, Sigrid Berg, Svein Arne Aase, Asbjorn Stoylen, Stig A. Slordahl. Automatic measurement with speckle tracking combined with TVI reduces variation in Strain Rate Imaging . ESC congress. München, 28.08.04 -01.09.04.In Eur. Heart. J. 2004 vol 25 abstract supplement P2863, (473)
  78.   31. Svein Arne Aase, Asbjørn Støylen, Charlotte Björk Ingul, Sigmund Frigstad, Hans Torp. Automated detection of aortic valve closure in alical tissue Doppler images. IEEE symposium, Montreal 2004.
  79.   32. Asbjørn Støylen. Bruk av vevsDoppler ved stressekkokardiografi og resynkroniseringsterapi. Referat fra Euroecho 6, München, desember 2003. Hjerteforum 2003, 16 (2) 41-43.
  80.   33. Amundsen BH, Hatlen G, Rognmo Ø, Støylen A, Slørdahl SA. Tissue Velocity Imaging of mitral annulus in CAD patients after 10 weeks of training at different intensities. Poster. Euroecho 7 3 – 6/12 2003, Barcelona. In: European Journal of Echocardiography 2003, 4 (suppl 1),P677, S81
  81.   34. Rabben SI, Torp AH, Støylen A, Ihlen H, Andersen K, Brodin LA, Storaa C, Smiseth OA. Automated quantification of mitral ring displacements and velocities. Poster. Euroecho 7 3 – 6/12 2003, Barcelon. In: European Journal of Echocardiography 2003, 4 (suppl 1), P364 (S41)
  82.   35. Amundsen BH, Hatlen G, Rognmo Ø, Støylen A, Slørdahl SA Strain Rate Imaging in patients with coronary artery disease after 10 weeks training at different intensities. Poster Euroecho 7 3 – 6/12 2003, Barcelona In: European Journal of Echocardiography 2003, 4 (suppl 1)P305, (S27)
  83.   36. CB Ingul, A. Støylen, SA Slørdahl. Time to peak systolic strain rate is not a reliable index of regional myocardial function. Poster Euroecho 7 3 – 6/12 2003, Barcelona In: European Journal of Echocardiography 2003, 4 (suppl 1)P373, (S44)
  84.   37. CB Ingul, A. Stoylen, H Torp, T Skjærpe, S Slordahl. Stunning recovery in acute myocardial infarction quantified by strain rate imaging. A clinical study. Oral presentation European heart Congress, Wien 30/8-3/9 2003. European heart Journal 2003, Vol 24 (abstract supplement) 2036, 375
  85.   38. Ingul CB, Støylen A Torp H, Skjærpe T, Slørdahl S. Border zone in Acute Myocardial Infarction: Natural history and assessment by Ultrasound Strain Rate Imaging. Oral presentation European heart Congress, Wien 30/8-3/92003. European heart Journal 2003, Vol 24 (abstract supplement) 2646, 489
  86.   39. A Støylen, CB Ingul, H Torp. 3-/4-dimensional parametric imaging allows quick visualisation of regional dysfunction and reverberation artefacts. European heart Congress Wien, 30.aug. – 3. Sep. 2003.In: European heart Journal 2003, Vol 24 (abstract supplement)P1670, 313
  87.   40. Ingul CB, Støylen A Torp H, Skjærpe T, Slørdahl S. Border zone in Acute Myocardial Infarction: Natural history and assessment by Ultrasound Strain Rate Imaging. Norsk kardiologisk selskaps vårmøte, Bergen 22. – 24. mai 2003: Hjerteforum 2003 Suppl 2, 19-20
  88.   41. A Støylen. Hvordan bedømme myokards viabilitet med ekkokardiografi. Norsk Cardiologisk Selskaps Vintermøte Lillehammer 31/1 – 2/2 200). : Hjerteforum 2003, 16(2);91 – 2.
  89.   42. CB Ingul, A. Stoylen, H Torp, T Skjærpe, S Slordahl. Stunning recovery in acute myocardial infarction quantified by strain rate imaging. A clinical study. Norsk Cardiologisk Selskaps Vintermøte Lillehammer 31/1 – 2/2 2003: Hjerteforum 2003, 16(2);94
  90.   43. A Stoylen, U Wisloff, S Slordahl. Left ventricular mechanics during exercise, A Doppler and tissue Doppler study. Euroecho 6, München, 4-7 December 2002. In European Journal of Echocardiography 2002(3) Supplement
  91.   44. Stoylen A: Stress Echocardiography. International symposium in cardiac imaging, Moscow, 25-26 April 2002. Abstract book.
  92.   45. Stoylen A, Skjærpe T: Lack of regional information from systolic longitudinal motion and velocity of the mitral annulus. Comparison with strain rate imaging. Euroecho5, Nice, 5-8 December 2001. In European Journal of Echocardiography 2001(2) Supplement
  93.   46. A Støylen. Kvantitativ evaluering av regional venstre ventrikkel funksjon med tøyningsavbildning (strain rate imaging). Foredrag cardiologisk vintermøte 2001. Hjerteforum nr. 1, 2001.
  94.   47. A Støylen, GK Skjelvan, T. Skjærpe. Inverse relation between strain rate propagation and flow propagation velocity during early diastolic filling phase. Comparison between colour Strain Rate Imaging and colour M-mode. Oral presentation. Euroecho4, Lisboa, 6-10 december 2000. In European Journal of Echocardiography 2000(1). Supplement 2, 190, pS26
  95.   48. A Stoylen, T Skjaerpe, A Heimdal. Post-systolic shortening in myocardial infarction. A study using Strain Rate Imaging by ultrasound. Poster European Heart Congress, Amsterdam 2000. In European heart journal 2000(21), Abstract supplement, s 111, P674.
  96.   49. Zabalgoitia M, Berning J, Koren MJ, Stoylen A, Nieminen MS, Dahlöf B, Devereux RB. Impact of coronary artery disease on left ventricular systolic function and geometry in hypertensive patients with left ventricular hypertrophy: The Losartan Intervention for Endpoint Reduction (LIFE) study. J Am Coll Cardiol Suppl. A FEB 2000;35(2):292A
  97.   50. S. A. Slørdahl, S. Bjærum, B. Amundsen, A. Støylen, A. Heimdal, S. I. Rabben, H. Torp. High Frame Rate Strain Rate Imaging of the Ventricular Septum in Healthy Subjects. Ultrasonics in Medicine and biology 2000. Published on the internet:  http://www.ifbt.ntnu.no/~hanst/sriweb/
  98.   51. Stoylen A, Heimdal A, Skjaerpe T. Long axis function of the left ventricle, a comparison of M-mode, pulsed tissue Doppler, colour tissue Doppler and Strain Rate. Poster, European Heart Congress, Barcelona 1999. In European Heart Journal 1999 (20), Abstract supplement, s 679, no P3608.
  99.   52. A. Støylen. Strain rate imaging. Hjerteforum 1999:1;40-44.
  100.   53. Stoylen A, Heimdal A, Skjelvan G, Skjaerpe T. Strain Rate Imaging by Ultrasound in Diastolic Function of the Left Ventricle. Oral presentation. European Heart Congress, Barcelona 1999. In European Heart Journal 1999 (20), Abstract supplement, s 148, no 930.
  101.   54. Wisløff U, Helgerud J, Støylen A, Ellingsen Ø. Utholdenhetstrente kvinner: Atrioventrikulær klaffeplanforflytning (AVPD), venstre ventrikkel funksjon og dimensjoner. Poster, Cardiologisk vårmøte, Oslo 1999. I Hjerteforum 1999, 12 (3) s 68 no 40.
  102.   55. Støylen A, Heimdal A, Skjelvan GK, Skjærpe T. Strain Rate Imaging og diastolisk funksjon. Poster, Cardiologisk vårmøte, Oslo 1999. I Hjerteforum 1999, 12 (3) s 65 no 37
  103.   56. Støylen A, Heimdal A, Skjærpe T. Venstre ventrikkels  systoliske langaksefunksjon, en sammenligning mellom M-mode, pulset vevs-Doppler, farge vevs-Doppler og Strain rate. Poster, Cardiologisk vårmøte, Oslo 1999. I Hjerteforum 1999, 12 (3) s 66 no 38.
  104.   57. Støylen A, Heimdal A, Bjørnstad K, Wiseth R, Vik-Mo H, Torp H, Skjærpe T: Strain rate Imaging by ultrasound in the diagnosis of coronary lesions. Poster EuroEcho2, Trieste, 9 – 12 desember 1998. In Echocardiography 1998;15: S33, P241
  105.   58. Rabben SI, Støylen A, Torp H, Wisløff B, Angelsen B: Automatic boundary detection in ultrasound M-mode images. Poster, Euroecho2, Trieste 9 – 12 desember 1998. In Echocardiography 1998; 15: S65, P428.
  106.   59. Remme E, Sørhus V, Rabben S, Støylen A, Angelsen B. Comparison of estimated central aortic blood pressure from carotid pulse curves obtained by arterial tonometry and volume distension recordings. Joint meeting and tutorial course of the 19th congress of the European society for noninvasive cardiovascular dynamics and 13th congress of the cardiovascular system dynamics society, August 27-30, 1998, Gent, Belgium.
  107.   60. Slørdahl S, Berg S, Støylen A, Samstad S, Torp H,: Left Ventricular Volumes from three-Dimensional Echocardiography by Rapid freehand Scanning using Digital Scan Line Data. Oral presentation, European Heart Congress Wien 22 – 26. august 1998. In European heart Journal 1998 (19), Abstract supplement, no 2078, s372.
  108.   61. Støylen A, Heimdal A, Bjørnstad K, Torp H, Skjærpe T. Strain rate imaging by ultrasound in the diagnosis of  regional dysfunction of the left ventricle. Poster. Cardiologisk vårmøte, Bergen 1998.
  109.   62. Loennechen JP, Støylen, A, Beisvåg V, Ellingsen Ø. Diastolisk veggstress korrelerer med ET-1 og ANF genuttrykk I myokard fra rotte etter eksperimentelt hjerteinfarkt. Poster. Cardiologisk vårmøte, Bergen 1998.
  110.   63. S. Rabben, L. Eilertsen, A. Støylen, J. Soma, F. Irgens, B. Angelsen Non-invasive Estimation of left ventricular myocardial fiber stress by using subclavian artery pulse tracings and M-mode echocardiography. Computers in Cardiology 1997, September 7-10, 1997, Lund, Sweden.

Invited lectures:

  1. Støylen, Asbjørn. 3D vs 2D echo strain: promise and reality.. Euroecho 2017; 2017-12-06 - 2017-12-09
  2. Støylen, Asbjørn. What is area strain? Physio-pathologic and diagnostic meaning of a novel parameter. Euroecho 2014; 2014-12-03 - 2014 -12-06
  3. Støylen, Asbjørn. Added diagnostic value of 3D strain after myocardial infarction. Euroecho 2013; 2013-12-11  - 2013-12-14
  4. Støylen, Asbjørn. Norsk kardiologisk selskap: Ole storsteins pris for hjerteforskning 2012. Prisforedrag
  5. Støylen, Asbjørn. What echocardiography cannot tell us about ischemic heart disease. Nordic cardiovascular imaging. Copenhagen 2012-06-15 to 2012-06-16
  6. Støylen, Asbjørn. Don't strain yourself or do? Bedside TDI and speckle tracking in the CCU. Euroecho, Copenhagen; 2010-08-12 - 2010-11-12
  7. Støylen, Asbjørn.  How to measure deformation? Comparing Doppler and 2D strain. Euroecho, Copenhagen; 2010-08-12 - 2010-11-12
  8. Støylen, Asbjørn.Mekanisk dyssynkroni ved venstre grenblokk. Hva er det egentlig, og er det av betydning i pasientseleksjonen?. Seminar i strålevern og nukleærmedisin, Stavanger; 2010-04-23 - 2010-04-25
  9. Støylen, Asbjørn.Diastolic Stress Test - What Does it Tell us in Infarct Patients?. Myocardial Velocity and Deformation Imaging symposium; Leuven 2010-02-04 - 2010-02-05
  10. Støylen, Asbjørn.Regional LV function, 2D strain or TDI or both?. 2nd St Jude Medical ECHO-Cardio symposium; København 26 - 27 sept. 2008
  11. Støylen, Asbjørn. Read with the experts. New technologies strain imaging. Cases - ischemic cardiomyopathy. European Society of Cardiology congress 2007 ; 01.09.2007 - 05.09.2007
  12. Echocardiograpic evaluation of Myocardial strain. Invited lecture. 18th annual Scientific meeting of the Japanese Society of Echocardiography. April 12 -14th. Karuizawa, Nagano, Japan.
  13. Tissue Doppler and speckle tracking. Different methods for strain and strain rate imaging. Different limitations and and advantages. Invited lecture. 18th annual Scientific meeting of the Japanese Society of Echocardiography. April 12 -14th. Karuizawa, Nagano, Japan.
  14. Støylen, Asbjørn. Measuring strain in three dimensions. [Vitenskapelig foredrag]. Leuven symposium on myocardial velocity and deformation imaging. ; 09.02.2007 - 10.02.2007
  15. Støylen, Asbjørn. Vurdering av ventrikkelfunksjon ved 2D strain: Klar for klinisk bruk? [Vitenskapelig foredrag]. Norsk kardiologisk selskaps vintermøte; 26.01.2007 - 28.06.2007
  16. Støylen, Asbjørn. Assessment of myocardial viability by echocardiography [Vitenskapelig foredrag]. Kardiologisk vårmøte 2006; 27.04.2006 - 29.04.2006
  17. Rustad, Lene Anette; Amundsen, Brage H.; Slørdahl, Stig Arild; Støylen, Asbjørn. Ny innsikt i diastolisk dysfunksjon under arbeidsbelastning [Vitenskapelig foredrag]. Høstmøtet 2006; 20.10.2006 - 21.10.2006
  18. Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Crosby, Jonas; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Clinical feasibility of speckle tracking echocardiography [Vitenskapelig foredrag]. Norsk Cardiologisk Selskaps Vintermøte 2005; 28.01.2005 - 30.01.2005. Publisert i: Hjerteforum nr 2; 2005
  19. Amundsen, Brage H.; Crosby, Jonas; Malm, Siri; Rustad, Lene Anette; Helle-Valle, T; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. Non-invasive myocardial strain measured by speckle tracking echocardiography [Vitenskapelig foredrag]. Medical Technology Seminar; 09.06.2005 - 09.06.2005
  20. Amundsen, Brage H.; Støylen, Asbjørn. Speckle tracking -et alternativ til vevs-Doppler? [Vitenskapelig foredrag]. Midt-Norsk Cardiologisk Forum Høstmøte; 24.11.2005 - 25.11.2005
  21. Asbjørn Støylen. Which clinical indications for strain and strain rate imaging are established? Invited speech,  Euroecho 9, Firenze 9th December 2005.
  22. Asbjørn Støylen. Speckle tracking. Invited speech, Glostrup Ekkomødet, København, 30. september 2005
  23. DICE session: Stress echocardiography [Vitenskapelig foredrag]. Euroecho 8; 01.12.2004 - 05.12.2004
  24. DICE session: Patient with chest pain. [Vitenskapelig foredrag]. Euroecho 8; 01.12.2004 - 05.12.2004
  25. How to use echocardiography to measure left ventricular contractility and diastolic function; global,regional and during ecercise. [Vitenskapelig foredrag]. Cellular biology of Exercise Training in Cardiovascular Disease; 09.12.2004 - 10.12.2004
  26. Arbeidsbelastninges plass i utredning av aortastenose. Norsk ekkokardiografisk høstmøte, Tønsberg, oktober 2004.
  27. Klinisk bruk av vevsdoppler og vevsdopplerbaserte metoder. Nytte, problemer og fallgruber. Invitert foredrag. Glostrup ekkomødet, København
  28. Nyere patofysiologisk kunnskap ved strain / strain rate imaging. Invitert foredrag. Glostrup ekkomødet, København september 2004
  29. 3-/4-dimensjonal parametrisk avbildning av myokardial bevegelse og deformasjon. Kardiologisk høstmøte i ekkokardiografi, Tjøme, oktober 2003
  30. Stress echocardiography. Invitert foredrag. Midt-Norsk kardiologisk forum høstmøte. Desember 2003
  31. Strain rate imaging. Seminar on Tissue Doppler. Huddinge, Stockholm 25. oktober 2003.
  32. Hvordan bedømme myokards viabilitet med ekkokardiografi. Norsk Cardiologisk Selskaps Vintermøte (Lillehammer 31/1 – 2/2 2003). With abstract.
  33. Stress Echocardiography. International symposium in cardiac imaging, Moscow, 25-26 April 2002. With abstract.
  34. New Tissue Doppler techniques in cardiology. XII Scandinavian congress of clinical physiology and Nuclear medicine. Aarhus April 25th - 27th, 2001.
  35. Strain / Strain rate parameters by ultrasound. How to obtain them. Euroecho 5. Nice 5. – 8- December 2001.
  36. Kvantitativ evaluering av regional venstre ventrikkel funksjon med tøyningsavbildning (strain rate imaging). Foredrag cardiologisk vintermøte 2. februar 2001. With abstract
  37. Strain Rate imaging. Does it add anything? Euroecho  1999. Wien 8. – 10- desember 1999.
  38. Strain Rate Imaging. The Second European Diastology meeting: Mechanisms and management of diastolic heart failure. Nice 24 – 26 september 1998.
  39. Norsk cardiologisk selskaps høstmøte i ekkokardiografi 1998, Strain rate Imaging. With abstract

 

Review assignments:

JACC imaging
Eur Heart Journal
Euroecho

Dissemination

Presentation of Cardiological special examinations at outpatient clinic St. Olavs Hospital, open day for public, 2. June 2002. Posters:  Hvordan virker Healing? Leder Adresseavisen 17. februar 2009.

Engen, Astrid; Karlsen, Trine; Støylen, Asbjørn.
Intervall er best for hjertet NRK- Puls. NRK - Puls [TV] 2011-09-05


Scientific supervision:

Doctor of Medicine (Dr. Med.)

Charlotte Björk Ingul. Evaluation of the heart by SRI (Strain rate Imaging). NTNU 2006. With Stig Slørdahl.


Philosophia Doctor (PhD):

Main supervisor: Håvard Dalen.  Echocardiographic indices of cardiac function. Normal values and associations with cardiac risk factoprs in a population free from cardiac disease, hypertension and diabetes: The HUNT3 study

Main Supervisor: Harald Edvard Mølmen Hansen: Cardiovascular effects of high intensity aerobic interval training in hypertensitive patients, healthy aged and young persons. NTNU 2012
Main Supervisor Anders Thorstensen: 2D and 3D echocardiography during inotropic alterations and after recent myocardial infarction.NTNU 2012
Main upervisor: Inger Lise Aamot: Feasibility of high-intensity interval training in cardiac rehabilitation. NTNU 2013
Main Supervisor: Lars Christian Lervik Nilsen – High frame rate 3-dimensional tissue Doppler 2017



Co Supervisor: Eirik Nestaas. Longitudinal strain and strain rate by tissue Doppler in term neonates. UIO 2010
Co supervisor: Brage Amundsen. Myocardial function quantified by speckle tracking and tissue Doppler echocardiography - Validation and application in exercise testing and training. NTNU 2008
Co supervisor: Svein Arne Aase. Methods for improving quality and efficiency in quantitative echocardiography - Aspects of using high frame rate NTNU 2008

Ongoing Supervision:

Main Supervisor: Annichen Søyland Daae

Main Supervisor: Marlene Halvorsrød

Oppositon PhD:

2013 Committee organiser Kristine Skårdal. The role of self gated MRI in murine models of heart failure. NTNU 2013
2012 First Opponent: Søren Hoffmann. Tissue Doppler Imaging in Stable Angina Pectoris. Københavns universitet

2011 Second Opponent Jostein Grimsmo. Cardiorespiratory function, atrial fibrillation and cardiovascular
health effects of long-term endurance training in three different age groups of former or current long distance cross-country skiers. A 28-30 year follow-up study. “THE BIRKOPP STUDY”
UiO

2010 First Opponent. Assami Rösner. Virtual dissection of Cardiac motion: What do we Measure by Strain and Strain Rate Imaging? UIT
2010 Committee organiser. Øystein Olsen. Analysis of Manganese enchanced MRI of the normal and injured rat central nervous system. NTNU
2009 Committee organiser. Siri Björgen. Aerobic high intensity interval training is an effective treatment for patients with Chronic Obstructive Pulmonary Disease.NTNU
2008  Second opponent.  Amjid Iqbal. Thyroid stimylating hormone (TSH). Associations with lipids, blood pressure and cardiac function.UIT
2008 Second opponent.   Einar Skulstad Davidsen. The heart in Haemochromatosis. UIB
2008 Committee organiser. Steven Keita Nishyiama. Perspectives on limb-vascular heterogeneity: Implications for human aging, sex, and exercise. NTNU


Graduate theses  1996 –  present

Co supervisor civil engineer diploma:
Lars Eilertsen: Methods for preprocessing of physiological data in stress and strain analysis of the left ventricular myocardium, NTNU februar 1997
Anette Vanvik Lund: Strain rate Imaging by ultrasound. NTNU desember 1997.
Co supervisor medical students graduate thesis:
Valborg O.E. Madslien: Effekt av aerob trening på utrente kvinners AV-planforflytning, samt venstre ventrikkels masse og volum. En treningsstudie av friske, utrente kvinner NTNU 1998 og.
Arnulf Kjos: AV-planforflytning hos kvinnelige toppidrettsutøvere sammenlignet med utrente kontroller. En ekkokardiografisk undersøkelse. NTNU 1998.
Henrik Winsnes and Arne Ødegaard: Cardiac function in exercise in healthy males.  NTNU 2001.
Einar Sagberg. Feasibility of 3D reconstructed parametric strain rate data in recognition of myocardial infarction. Medical Student Research Thesis. Trondheim, Norway: Norwegian University of Technology and Science 2006.
Eivind Vedvik: Evaluation of Strain Rate Imaging using 3D model as a tool for the evaluation of decreased regional myocardial contraction during cardiac stress. NTNU 2007
Co supervisor master's theses:
Inger Lise Aamodt. Efficacy and Feasibility of Early Onset of Exercise Training after Myocardial Infarction. M.Sc. NTNU 2007.
Sandra Olsen: Approprieteness of supplementary ischemia testing. NTNU 2010
Øyvind Eian og Mathias Brobakk NTNU 2013

Education

2008    PEDUP, required course in university pedagogics
2002    Basic QoL
2001    Dr. med. (Doctorate in medicine) NTNU, Trondheim
1980    Cand.med. (graduate degree in medicine), Oslo Laudabilis; 10.10
1974    Eksamen philosophicum, Oslo. Laudabilis; 2.3

 

Teaching Experience

Teaching at the Norwegian University of Science and Technology since 1988. Bedside, and lectures in cardiology and internal medicine for medical students.

2004 – Course coordinator and lecturer: Medicine for non medical students MFEL1010
2011 – Course coordinator and lecturer: Medicine for Students of Natural Sciences and Technology MFEL3010
2008 – Lectures medical students
2011 – PBL tutor medical students.


Work experience

2011 –                Professor, NTNU
2004 –   2011    1. Amanuensis I (Associate professor), NTNU
2001 –  2004     Senior research Fellow (Postdoc) in medical technology, NTNU
1999 –              Consultant Physician in Cardiology, St. Olavs Hospital, Trondheim
1996 – 1999      Research fellow in Cardiology, Trondheim (Norwegian Council for Cardiovascular disease)
1995 – 1996      Consultant Physician in Cardiology, St. Olavs Hospital, Trondheim
1991 – 1995      Cardiology Fellow, St. Olavs Hospital, Trondheim
1988 – 1991      Resident, internal medicine, St. Olavs Hospital, Trondheim
1988                 Consultant, dept. of internal medicine, Namdal County hospital
1984 – 1988      Resident internal medicine and radiology, Namdal County hospital
1983                 Army Doctor, Porsanger
1982 – 1983      Resident, surgery, Namdal County hospital
1981 – 1982      Intern, Aust-Agder Central Hospital, Arendal and Sortland Legekontor

 

Special assignments

2004 –  2007    Assistant chairman, National Working Group of Echocardiography, Norwegian Cardiological Society.
2003                 Leader, project group for cardiopulmonary rehabilitation in university hospital rebuilding and planning.
2003 –  2009    Member of the scientific council of Norwegian Association of Heart and Lung Patients.
2002 –              Responsible for developing programme for clinical cardiac ultrasound research at Department of Circulation and Imaging.
2002                 Programme responsible for strategic symposium in cardiac ultrasound research, Trondheim 23 – 24th October 2002.
2001 –  2004     Secretary, National Working Group of Echocardiography, Norwegian Cardiological Society.
2001 –               Head of research council, Dept of Cardiology, St. Olavs Hospital, Trondheim
2001                  First director of new outpatient clinic, Dept of Cardiology, St. Olavs Hospital, Trondheim
1986 – 1987     Hovedtillitsvalgt, Yngre legers forening, Namdal sykehus.                       

 

Research collaboration

Univeristy of Antwerp: Professor Viviane Conraads
University of Leipzig: Professor Axel Linke
Technical university of Münich: Professor Martin Halle
Bispebjerg University Hospital: Professor Eva Prescott
Cleveland University: Professor Thomas Marwick
Department of Pediatrics, Oslo University hospital; Professor Drude Fugelseth
Department of Cardiology, Haukeland University hospital; Professor Eva Gerdts

Industry collaboration

GE Vingmed Ultrasound


Comments

General comments.

I started my PhD work in 1997, with studies of the long axis function of the heart. My Supervisor was professor Terje Skjærpe. In the course of the work I was lucky to work in the interdisciplinary collaborative environment of technical ultrasound and cardiac physiology in what now is the department of circulation and imaging) in the faculty of medicine, NTNU.

Thus I collaborated with Andreas Heimdal and Hans Torp in the development of tissue Doppler based deformation imaging. The technical development was, of course an engineering project, and the method was related to the velocity gradient published by others, but the technical implications was new.

 

My specific contribution was the idea that deformation should be measured in the longitudinal direction, which was the breakthrough, making all segments of the left ventricular myocardium available for analysis through the apical window, as well as increasing the feasibility of tissue Doppler analysis. This has made deformation analysis applied as a tool world wide. I also participated in the discussion leading to the now universal colour map for deformation imaging, in use worldwide, not only in tissue Doppler, but all modalities.

 

My primary research was in validating the method, I participated in the first paper on the method, where the method was described technically, and I did a clinical feasibility pilot study in patients (Heimdal et al 1998).  I conducted further validation studies in patients, against B-mode echocardiography (Stoylen 1999) and coronary angiography (Stoylen 2000). Those were the first three publications on strain rate imaging. Validation in experimental models were done at other centres, and published from 2000 and onwards.

Further work in myocardial infarction diagnostics has been in testing the difference between motion (velocity) and deformation (strain rate) in infarction (Støylen 2003).

 

Later work has been in testing the development of automated analysis together with my first doctoral student Charlotte Bjørk Ingul, and the value of the application in stress echocardiography, with in collaboration with Dr. Th Marwick  of Brisbane University (Ingul 2007), and in looking at infarct recovery (Ingul 2005, 2010).

 

In collaboration with the department of pediatrics, Ullevål university hospital, Oslo, where I was technical co supervisor, we tested the application of deformation imaging with tissue Doppler derived strain rate to the ecamination of cardiac function in newborns, looking at optimisation of probes and settings, as well as showing defomation imaging to be more sensitive for asphyxia than conventional echocardiography  (Nestaas 2008, 2009, 2011)

 

In the technical environment at the Department of circulation and imaging (Svein Arne Aase and Hans Torp), we have developed and tested the automated detection of the aortic valve closure by tissue Doppler, and event that is important in timing the regional and global events of the heart cycle and detecting delayed contractions in diseased segments, as well as giving new insight into cardiac physiology (Aase 2006, 2008, 2010).

 

I have also tested the 3-dimensional reconstructed surface rendering of deformation data (Støylen 2003), a method that is promising in being able to measure infarct size directly by mapping the area of reduced function, instead of indirectly by reduced global function (Thorstensen 2012).

 

For the third wave if the HUNT study, I designed the HUNT echo substudy, which was performed by my PhD student Håvard Dalen, collecting normal data for strain and strain rate in healthy subjects, in order to establish the normal range, and relate to known risk factors in healthy subjects (Dalen 2010, 2010, 2011). With 1266 healthy subjects of both genders and all ages above 20, it is the largest normal strain and strain rate reference population in the world.

 

I have also been particularly concerned about dissemination of the knowledge of deformation imaging, the ability, the documentation, and especially the limitations and pitfalls of the methods of echocardiography in general and deformation imaging in special.

 

For this, i have designed a comprehensive web site that is freely accessible on the internet. The site attempts to integrate the technical/mathemathical, physiological and clinical infromation, and with heavy emphasis on problems and pitfalls of the methods. This site is used world wide, and has an average og about 10.000 hits per year. It can be acessed through

http://folk.ntnu.no/stoylen/strainrate/ and is equivalent to over 200 pages.

 

My second field of research is the effects of exercise on the heart.

 

I started collaboration on this with Ulrik Wisløff already in  1999, and have participated in studies with tissue Doppler and long axis function in normals (stoylen 2003), in myocrdial infarction (Rustad 2008), as well as doing studies in cardiac rehabilitation training (Karlsen 2008, 2009, Helgerud 2010, Aamot 2010). In this context, I designed a study, showing that high intensity interval trining had a better effect in reducing blood pressure in moderate hypertension than moderate exercise. Maybe the most important study is the demonstration of reverse remodelling in heart failure with high intensity exercise (Wisløff 2007), which now is being extended into a multicentre study (Støylen 2011).


Present and ongoing research: