MDCT in the study of left ventricular function compared with MRI in patients with myocardial ischemia

Abstract

Introduction: Data assimilated for coronary arteries angiography by MDCT with retrospective (ECG) gating could be used for LV function without the need to repeat examination. Aim of the work: Is to study left ventricular segmental motility and global function using MDCT compared to MRI. Patients and methods: Fifty patients had cardiac MDCT and MRI studies within the same hour. LVEDV and LVESV volumes were measured. Consequently, the (EF) was calculated, for wall motion analysis, cine loops evaluated by two radiologists. Results: Excellent correlation between MDCT and MRI for the measurement of EDV (r2 = 0.962; p < 0.001), and ESV (r2 = 0.988; p < 0.001). Evaluation of EF revealed a good correlation between MDCT and MRI (r2 = 0.984; p < 0.001) all by linear regression analysis. All the cardiac segments that shows dyskinesia or akinesia showed agreement between MDCT and MRI in cine images, the only disagreement in cases of mild hypokinesia detected only by MRI. Conclusions: High agreement between MDCT and MRI in the study of left ventricular segmental motility and global function. Keywords: LV, MDCT, CMR, Function