Ultrasonic imaging of myocardial strain using cardiac elastography. Ultrason Imaging 2003 Jan;25(1):1-16
Date
05/16/2003Pubmed ID
12747424DOI
10.1177/016173460302500101Scopus ID
2-s2.0-0037625844 (requires institutional sign-in at Scopus site) 54 CitationsAbstract
Clinical assessment of myocardial ischemia based on visually-assessed wall motion scoring from echocardiography is semiquantitative, operator dependent, and heavily weighted by operator experience and expertise. Cardiac motion estimation methods such as tissue Doppler imaging, used to assess myocardial muscle velocity, provides quantitative parameters such as the strain-rate and strain derived from Doppler velocity. However, tissue Doppler imaging does not differentiate between active contraction and simple rotation or translation of the heart wall, nor does it differentiate tethering (passively following) tissue from active contraction. In this paper, we present a strain imaging modality called cardiac elastography that provides two-dimensional strain information. A method for obtaining and displaying both directional and magnitude cardiac elastograms and displaying strain over the entire cross-section of the heart is described. Elastograms from a patient with coronary artery disease are compared with those from a healthy volunteer. Though observational, the differences suggest that cardiac elastography may be a useful tool for assessment of myocardial function. The method is two-dimensional, real time and avoids the disadvantage of observer-dependent judgment of myocardial contraction and relaxation estimated from conventional echocardiography.
Author List
Varghese T, Zagzebski JA, Rahko P, Breburda CSAuthor
Christian Steve Breburda MD Professor in the Medicine department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
AgedCoronary Disease
Echocardiography
Heart Ventricles
Humans
Image Processing, Computer-Assisted
Male
Myocardial Ischemia
