Publication date: Available online 10 January 2018
Source:Current Problems in Diagnostic Radiology
Author(s): Andrew B. Rosenkrantz, Jovan Begovic, Antonio Pires, Eugene Won, Samir S. Taneja, James S. Babb
PurposeTo assess the impact on reader performance of an interactive case-based online tutorial for prostate MRI interpretation using PI-RADS.MethodsAn educational website was developed incorporating scrollable multi-parametric prostate MRI examinations with annotated solutions based on PI-RADS version 2. Three second-year radiology residents evaluated a separate set of 60 prostate MRI examinations both before and after review of the online case material, identifying and scoring dominant lesions. These 60 examinations included 30 benign cases and 30 cases with a dominant lesion demonstrating Gleason score ≥3+4 tumor on fusion-targeted biopsy. The readers′ pooled performance was compared between the two sessions using logistic regression and Wilcoxon signed rank tests.ResultsAll readers completed the online material within four-hours. Review of the online material significantly improved sensitivity (from 57.8% to 73.3%, p=0.003) and negative predictive value (from 69.2% to 78.2%, p=0.049), but not specificity (from 70.0% to 67.8%, p=0.692) or positive predictive value (from 59.6% to 64.7%, p=0.389). Reader confidence (1–10 scale; 10=maximal confidence) also improved significantly (from 5.6±2.7 to 6.3±2.6, p0.026). However, accuracy of assigned PI-RADS scores did not improve significantly (from 45.5% to 53.3%, p=0.149).ConclusionAn online interactive case-based website in prostate MRI interpretation improved novice readers′ sensitivity and NPV for tumor detection, as well as readers′ confidence. This online material may serve as a resource complementing existing traditional methods of instruction by providing a more flexible educational experience among a larger volume of learners. However, further more targeted educational initiatives regarding the proper application of PI-RADS remain warranted.
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