In his PhD thesis, Lars Christian Naterstad Lervik has shown that ultra-high frame rate tissue Doppler imaging is feasible and clinically useful.
Thesis: Ultra-high frame rate tissue Doppler imaging, technical feasibility and first clinical experiences
Candidate: Lars Christian Naterstad Lervik
Time: November 23, 2017 at 12:15
Place: Medical Technical Research Centre, St. Olavs Hospital: Auditorium MTA
Link to university website (in Norwegian)
(1) Lervik and co-workers describe a new tissue Doppler imaging method with a frame rate of 1200 frames per second in a four-chamber apical view. Feasibility of the new method was confirmed in ten healthy volunteers, as peak annular velocities and time to peak S′ intervals were in good agreement with measurements from conventional tissue Doppler imaging. The ultra-high frame rate method also provided additional information in early and late systole, as it was able to separate the timing of electrical activation, start of mechanical contraction, mitral valve closure and start of ejection.
(2) Retrospective spectral Doppler from ultra-high frame rate imaging enables assessment of strain rate without the influence of clutter seen by convensional tissue Doppler imaging. In 20 patients with a recent myocardial infarction the new method was the only one that differentiated transmural from non-transmural distribution of myocardial scar on a segmental level. The method also had several other advantages compared to the conventional method.
Brekke, B., Nilsen, L. C., Lund, J., Torp, H., Bjastad, T., Amundsen, B. H., Støylen, A., & Aase, S. A. (2014). Ultra-high frame rate tissue Doppler imaging. Ultrasound in medicine & biology, 40(1), 222-231.
Lervik, L. C. N., Brekke, B., Aase, S. A., Lønnebakken, M. T., Stensvåg, D., Amundsen, B. H., Torp, H., & Støylen, A. (2017). Myocardial Strain Rate by Anatomic Doppler Spectrum: First Clinical Experience Using Retrospective Spectral Tissue Doppler from ULTRA-HIGH FRAME RATE IMAGING. Ultrasound in Medicine & Biology
Priority at NORHEART events
Opportunities for travel and exchange grants
E-mail updates on key NORHEART events
23 students completed NORHEART’s Introductory Course to Cardiovascular Research and Medicine in Oslo 17–21 October. As usual,…
The 20th Annual Norwegian Symposium on Heart Research was arranged by NORHEART and the Department…
The Norwegian Health Association has awarded the prestigious 2022 Heart Research Award (Hjerteforskningsprisen) to professor Eva…
NORHEART was established in 2013 as part of the research school program of the Research…