Comparison of measurements of LV end-diastolic and end-systolic volumes by 2D TTE and CMR. A. Measurement of LV end-diastolic volumes by both imaging methods showed a strong correlation by Pearson correlation analysis (r = 0.81, p < 0.00001). B. Bland-Altman analysis indicated general underestimation of the LV end-diastolic volume by 2D TTE in comparison with CMR (average bias +28 ml, 95% confidence interval -53 to +109 ml). C. Measurement of LV end-systolic volumes by both imaging methods showed as well a good correlation (Pearson r = 0.7, p < 0.00001). D. Bland-Altman analysis revealed general underestimation of the LV end-systolic volume by 2D TTE compared to CMR (average bias +20 ml, 95 % confidence interval -25 to +66 ml).