Evaluation of left ventricular ejection fraction by tissue locus imaging

The American Journal of Cardiology
Kumiko NatsugoeChuwa Tei

Abstract

The newly developed echocardiographic technique called "tissue locus imaging" (TLI) can visualize temporal series of images in a single picture by maintaining the display of previous images with a shading function; therefore, it can display the whole systolic shift of the mitral leaflets toward the apex in a single picture and can potentially offer useful information on left ventricular (LV) function. In 36 consecutive patients with varying degrees of LV dysfunction (15 with coronary artery disease, 9 with cardiomyopathy, 3 with hypertension, 2 with aortic stenosis, 1 with aortic regurgitation, and 6 controls), the systolic shift of the mitral leaflets (X) by TLI showed a significant correlation with the LV ejection fraction (Y) by 2-dimensional echocardiography (Y = 7.2 x+13, r(2) = 0.83, p <0.01). TLI enables the evaluation and visualization of LV systolic function by displaying the whole systolic shift of the mitral leaflets toward the apex.

References

Jan 1, 1989·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·J S Simonson, N B Schiller
Nov 1, 1988·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·P E AssmannJ R Roelandt
Jun 1, 1967·Circulation·H FeigenbaumW K Nasser

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