Author/Authors :
Natsugoe، نويسنده , , Kumiko and Otsuji، نويسنده , , Yutaka and Zhou، نويسنده , , Xiaoyan M. Zhang، نويسنده , , Hui and Kisanuki، نويسنده , , Akira and Yoshifuku، نويسنده , , Shiro and Kumanohoso، نويسنده , , Toshiro and Yuge، نويسنده , , Keiko and Hamasaki، نويسنده , , Shuichi and Biro، نويسنده , , Sadatoshi and Minagoe، نويسنده , , Shinichi and Ochi، نويسنده , , Masumi and Tei، نويسنده , , Chuwa، نويسنده ,
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 × +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.
