title: Evaluation of left ventricular ejection fraction by tissue locus imaging.
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.
authors.affiliation: First Department of Internal Medicine, Kagoshima University School of Medicine, Kagoshima, Japan.
authors.forename: Kumiko
authors.initials: K
authors.lastname: Natsugoe
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Otsuji
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Zhou
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.forename: Akira
authors.initials: A
authors.lastname: Kisanuki
authors.forename: Shiro
authors.initials: S
authors.lastname: Yoshifuku
authors.forename: Toshiro
authors.initials: T
authors.lastname: Kumanohoso
authors.forename: Keiko
authors.initials: K
authors.lastname: Yuge
authors.forename: Shuichi
authors.initials: S
authors.lastname: Hamasaki
authors.forename: Sadatoshi
authors.initials: S
authors.lastname: Biro
authors.forename: Shinichi
authors.initials: S
authors.lastname: Minagoe
authors.forename: Masumi
authors.initials: M
authors.lastname: Ochi
authors.forename: Chuwa
authors.initials: C
authors.lastname: Tei
mesh_terms: D000328:Adult; D000368:Aged; D009202:Cardiomyopathies / Q000503:physiopathology*; D003327:Coronary Disease / Q000503:physiopathology*; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume; D016277:Ventricular Function, Left