Myocardial wall velocity assessment by pulsed Doppler tissue imaging: Characteristic findings in normal subjects

被引:231
作者
Garcia, MJ
Rodriguez, L
Ares, M
Griffin, BP
Klein, AL
Stewart, WJ
Thomas, JD
机构
[1] VET AFFAIRS MED CTR, WHITE RIVER JCT, VT USA
[2] DARTMOUTH COLL SCH MED, HANOVER, NH USA
[3] CLEVELAND CLIN FDN, DEPT CARDIOL, CARDIOVASC IMAGING CTR, CLEVELAND, OH 44195 USA
关键词
D O I
10.1016/S0002-8703(96)90251-3
中图分类号
R5 [内科学];
学科分类号
1002 [临床医学]; 100201 [内科学];
摘要
To validate the use of pulsed Doppler tissue imaging that measures myocardial wall velocities and to define the characteristics of these velocities in normal subjects, we obtained and compared the anteroseptal and posterior wall velocities in 24 volunteers with pulsed Doppler tissue imaging and digitized M-mode echocardiography. We also studied the relation between velocity components and hemodynamic events timed by standard Doppler flows. There was an excellent correlation between Doppler and AR-mode-derived velocities (r = 0.95, p < 0.001), with higher reproducibility for Doppler (r = 0.99) than for M-mode (r = 0.95, p < 0.001). Biphasic velocities that were uniformly present during isovolumic contraction and relaxation were attributed to geometric changes due to asynchronous contraction and ventricular interdependence. We conclude that wall velocities obtained by pulsed Doppler tissue imaging are accurate and reproducible. This method may prove useful for studying the contractile and elastic properties of the myocardium.
引用
收藏
页码:648 / 656
页数:9
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