When evaluating the interrater reliability, broken down by modality, and looking at kappa values, 0% defects had the best interrater reliability by 3-D CT, 0.82 (p < 0.001); 0% to 12% defects by 3-D CT: 0.52 (p < 0.001); 12% to 25% defects had the best interrater reliability with 3-D CT, 0.38 (p < 0.001); however, CT was close at 0.37 (p < 0.001); and defects > 25% showed the best interrater reliability by CT, 0.57 (p < 0.001).