Purpose: Short axis based MR volumetry has been known as accurate and reproducible method for measurement of left ventricle(LV) volume based on radial contraction. But, it has limitation to reflect the differences between radial contraction and longitudinal contraction. The images used by retrospective gating true-FISP cine MRI have tendency to show the location difference of the mitral annulus(below base) between at end-diastolic phase and at end-systolic phase. Because the most of the retrospective gating true-FISP cine MR were performed with 6-8 mm slice thickness with 20-40 percent intersectional gap from just above the base to the apex, we have no alternative choice for the correction of base difference by longitudinal contraction except using the inclusion or exclusion of 1 base slice Materials and Methods: Thirty-four patients with acute myocardial infarct were enrolled in our study. The patients with Retrospective gating true-FISP cine MR were performed with 8mm slice thickness with 20 percent intersectional gap from just above the base to the apex. Nine to ten short-axis cine images were obtained. Ejection fraction(EF) and end-diastolic volume(EDV) were acquired with semi-automated methods. The effects of including or excluding one or two sectional plane from base or apex and excluding sectional planes with interleaved manner were analyzed by comparison with the reference data acquired from whole slices. The errors of the estimates(EEs) were used for indicating the variation of each method in comparison with reference volume data Results: when we include or exclude 1 basal slice at end-systolic phase, the EEs for EF were 5.87 to 7.95%. Whereas, the EEs for EF were 0.01 to 0.35% in cases of interleaved manner or manners of apical slice. When we include 1 basal slice at end-systolic phase, the EEs for EDV were 17.44cc. Whereas, the EEs for EF were below 6cc in cases of other manners Conclusions: It is important to reach consensus on the alternative method for the correction of base difference by longitudinal contraction except using the inclusion or exclusion of 1 base slice. we suggest the corrective method by using the displacement degree from the 4 chamber or the 2 chamber images