Interobserver Agreement and Accuracy of Six Scoring Systems（Likert, PI-RADS V1, PI-RADS V2, MLS, SQS, UCSF）for Prostate Lesions by Using Mp-MR imaging

Some institutions have used other prostate scoring systems except for PI-RADS. The purpose of this study was to determine for expert and novice radiologists the agreement and accuracy of six scoring systems for categorization of prostate lesions seen at mp-MRI. 129 lesions were scored for four readers. Experts and novices had fair to moderate agreement for most scores (k: 0.2176~ 0.4533). Novices were less consistent and less likely to diagnose prostate cancer than were experts. The Likert and PI-RADS V1 scores allowed significantly more accurate categorization of prostate lesions than others.