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Figure 2 (A,C) Scattergram shows correlation between conventional cine magnetic resonance (MR) imaging measurements and real-time MR imaging measurements of left ventricular (A) end-diastolic and (C) end-systolic volume in heart-failure patients (n = 9). (B,D) Plots of the average mean versus the differences between cine MR imaging and real-time MR imaging. In A and C, the solid line is the regression line; the dashed line is the line of the identity; in B and D, the solid line is the mean difference; the dashed lines are 2 SD of the mean difference.