[Detection of regional left ventricular wall motion abnormality by ultrasonic cardiotomography: comparison with phase images of RI angiocardiography].
Left ventricular (LV) wall motion abnormality evaluated by LV contrast angiography was compared with that of RI angiography and ultrasonic cardiotomography (UCT). Phase images and UCT were performed in 15 patients with akinesis or dyskinesis (Group I), 17 with localized hypokinesis (Group II), and 11 without abnormality (Group III). In the RAO phase image, the LV was divided into apical, antero-lateral, and inferior segments. When there was a difference of more than 15 degrees in the mean of pixel phase values in each segment, the motion abnormality was judged to be present. The sensitivity was 90% in Group I and 25% in Group II, respectively, and the specificity was 86% in Group III. In the LAO phase images, when the standard deviation of phase values within the LV was more than 10 degrees, the motion abnormality was judged to be present. The sensitivity was 100% in Group I and 71% in Group II, respectively, and the specificity was 91% in Group III. In UCT, the sensitivity was 73% in Group I and 12% in Group II, respectively, and the specificity was 100% in Group III. Thus, the RAO phase image is rewarding in evaluating the site of the motion abnormality, and the LAO phase image is also helpful in the detection. On the other hand, it was difficult to detect the abnormality of wall motion of the apical region by UCT.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000787:Angina Pectoris / Q000175:diagnosis; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D009203:Myocardial Infarction / Q000175:diagnosis; D011877:Radionuclide Imaging; D013318:Stroke Volume