Figure 3b:

Repeatability and reproducibility of CDI measurements with MR angiography. (a) Bland-Altman plot shows excellent intraobserver agreement between CDI measurements for reader 1 (r = 0.914), with low variability of CDI measurements. (b) Bland-Altman plot shows good interobserver agreement of CDI measurements between readers 1 and 2 (r = 0.820), with mild dispersion of CDI measurements. (c) Bland-Altman plot shows good imaging–repeat imaging agreement between CDI measurements for reader 1 (r = 0.811), with mild discrepancy of CDI measurements. Data points that appear outside the 1 standard deviation (SD) region may be due to the effect of signal loss on coronary lumen measurements.