[Left ventricular wall motion. A comparison of six evaluation methods (author's transl)].
LV wall motion from monoplan, RAO projected LV angiograms is one of the most important parameters for LV function studies. Different methods to describe wall motion are reported in the lit., including procedures to correct distortions from x-ray techniques. With physiological contraction patterns as the basis a method is described, in which systolic contraction is performed radially with its center being the mean point of the diastolic long axis of the projected LV area. Wall motion was measured at 20 degrees distances circular around mean point, starting from the aorta. The mean deviation of the systolic long axis frm diastolic one was 8.5 degrees. This angle was corrected. The comparison of this procedure with six other methods reported in the lit. shows, that there are differences in wall motion up to 100%, depending on the model used. We conclude, that a standardized procedure to measure wall motion is necessary, which is described here.
D000328:Adult; D000368:Aged; D000790:Angiocardiography; D003327:Coronary Disease / Q000503:physiopathology; D003971:Diastole; D006334:Heart Function Tests; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D008955:Models, Cardiovascular; D009200:Myocardial Contraction; D013599:Systole; D016276:Ventricular Function
Normale Wandbewegungen des linken Ventrikels Vergleich mehrerer Auswertemethoden.