Fig. 4

Bland–Altman comparisons of left-ventricular (LV) parameters. Measures derived from breath-hold ECG-gated segmented cine are compared to those derived from the free-breathing ECG-free real-time cine reconstructed with the GRASP and deep-learning radial acceleration with parallel reconstruction (DRAPR) techniques. Solid and dotted lines represent the mean difference and mean difference ± 1.96 × standard deviation of the difference. A The mean differences in LV end-diastolic and end-systolic volumes with golden angle radial sparse parallel (GRASP) were 4.4 mL and 6.4 mL, while the mean difference in LV ejection fraction was − 4.3%. B The mean differences in LV end-diastolic and LV end-systolic volumes with DRAPR were 3 mL and 7 mL, while the mean difference in ejection fraction was − 5%