Imaging-quality
Within the low-dose group, 72 images (72%) were considered as category A and 28 images (28%) were considered as category B. Within the standard-dose group, all imaging scans were considered as category A. The inter-observer agreements were very good across both groups (kappa value = 0.926 and 1.000, respectively). The category A images occurred more frequently within the standard-dose group (P < 0.001).