QUANTITATIVE-ANALYSIS OF REGIONAL LEFT-VENTRICULAR FUNCTION AFTER MYOCARDIAL-INFARCTION IN THE PIG ASSESSED WITH CINE MAGNETIC-RESONANCE-IMAGING

To assess the accuracy of quantitative analysis of global and regional wall motion and wall thickening of the left ventricle with cine magne tic resonance (MR), images obtained in eight pigs before and after myo cardial infarction were compared with those obtained using gadolinium diethylenetriaminepentaacetic acid (Gd-DTPA)-enhanced multislice spin- echo MR imaging and determination of pathology. The region with abnorm al wall motion and wall thickening, as determined with cine MR imaging , identified the same region of infarction as indicated by Gd-DTPA-enh anced spin-echo MR imaging and pathology, Within the infarcted region wall motion and wall thickening analyzed with the centerline method we re significantly reduced. We conclude that the use of quantitative ana lysis of cine MR images accurately determines localization and extent of regional left ventricular dysfunction in the infarcted heart in viv o. This analysis using dedicated software including the centerline met hod allows sequential assessment of regional left ventricular function in normal and infarcted hearts.