Evaluation of left ventricular ejection fraction by tissue locus imaging - 26/08/11
, Xiaoyan Zhou, MD a, Hui Zhang, MD a, Akira Kisanuki, MD a, Shiro Yoshifuku, MD a, Toshiro Kumanohoso, MD a, Keiko Yuge, MD a, Shuichi Hamasaki, MD a, Sadatoshi Biro, MD a, Shinichi Minagoe, MD a, Masumi Ochi, BS b, Chuwa Tei, MD aAbstract |
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 × +13 , r2 = 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.
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Vol 94 - N° 2
P. 273-275 - juillet 2004 Retour au numéro
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