Figure 4

(A,B) Linear regression plot of mean image quality scores per patient (y-axis) against heart rate (x-axis) by 128-MSCT (A) and DSCT (B). Spearman’s correlation for the 128-MSCT group (r = 0.48, P < 0.01); Spearman’s correlation for the DSCT group (r = 0.20, P = 0.22).