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Abstract #1836

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

Li Zhang1, Longchao Li1, Jin Zhang2, and Jianfeng Li2

1The department of MRI, Shaanxi People’s Hospital, xi'an, China, 2MRI, Shaanxi People’s Hospital, xi'an, China

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.

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