Fig. 4

Scatter diagrams with regression lines of phase SD between 4DM and ECTb (a), cREPO and ECTb (b), and QGS and ECTb (c). The Bland-Altman plots of phase SD between 4DM and ECTb (d), cREPO and ECTb (e), and QGS and ECTb (f). Continuous lines and dashed lines denote the mean difference between phase SDs by two software programs and upper and lower 95% limits of agreement, respectively. SD standard deviation, QGS quantitative gated SPECT, ECTb Emory Cardiac Toolbox, 4DM Corridor 4DM, cREPO cardioREPO