The value of multiparametric MRI examination using 1.5T and 3.0T with PI-RADS (version 2) in the qualitative diagnosis of clinically significant prostate cancer
Author(s): ZHAO Chenglin, GAO Ge, LI Feiyu, FANG Dong, WANG He, WANG Xiaoying
Pages: 414-417
Year: 2017 Issue: 4
Journal: Radiologic Practice
Keyword: Multiparametric magnetic resonance imaging; Tesla: Prostate cancer; Prostate imaging and reporting archiving data system; Diagnostic efficacy;
Abstract: Objective:To compare the diagnostic accuracy of multiparametric MRI (mpMRI) using 1.5T and 3.0T scanner with Prostate Imaging Reporting and Data System (PI-RADS version 2) for clinically significant prostate cancer (CSPCa).Methods:447 consecutive patients [mean age:(68.7±9.0)y;PSA:(15.4±14.0) ng/mL] with suspected CSPCa who underwent transrectal ultrasound guided biopsy from December 2010 to December 2013 within 3 months after mpMRI examination were included in this study.Conventional T2WI,diffusion weighted imaging (b=0,800s/mm2) and dynamic contrast-enhanced MRI were performed at 1.5T (n=75) or 3.0T (n=372) scanner.The pathological results were considered as the golden standard,and the CSPCa was defined as Gleason score≥7.The mpMRI data were evaluated by two radiologists using PI-RADS version 2,and the diagnostic efficacy in 1.5T and 3.0T group were analyzed and compared.Results:There were 195 out of 447 (43.6 ％) CSPCa patients confirmed by pathology results.Receiver-operation characteristic curve (ROC) analysis showed that the area under curve (AUC) in 1.5T and 3.0T group was 0.94 and 0.89,diagnostic sensitivity was 95.0％ and 85.8％,specificity was 91.4％ and 80.7％,positive predictive value (PPV) was 92.7％ and 76.1％,negative predictive value (NPV) was 94.1％ and 88.8 ％,respectively.There was no significant difference of diagnostic accuracy between the two groups (P＞0.05).Conclusion:Both 1.5T and 3.0T mpMRI using PI-RADS version 2 perform well for detecting clinically significant prostate cancer.
Pages: 414-417
Year: 2017 Issue: 4
Journal: Radiologic Practice
Keyword: Multiparametric magnetic resonance imaging; Tesla: Prostate cancer; Prostate imaging and reporting archiving data system; Diagnostic efficacy;
Abstract: Objective:To compare the diagnostic accuracy of multiparametric MRI (mpMRI) using 1.5T and 3.0T scanner with Prostate Imaging Reporting and Data System (PI-RADS version 2) for clinically significant prostate cancer (CSPCa).Methods:447 consecutive patients [mean age:(68.7±9.0)y;PSA:(15.4±14.0) ng/mL] with suspected CSPCa who underwent transrectal ultrasound guided biopsy from December 2010 to December 2013 within 3 months after mpMRI examination were included in this study.Conventional T2WI,diffusion weighted imaging (b=0,800s/mm2) and dynamic contrast-enhanced MRI were performed at 1.5T (n=75) or 3.0T (n=372) scanner.The pathological results were considered as the golden standard,and the CSPCa was defined as Gleason score≥7.The mpMRI data were evaluated by two radiologists using PI-RADS version 2,and the diagnostic efficacy in 1.5T and 3.0T group were analyzed and compared.Results:There were 195 out of 447 (43.6 ％) CSPCa patients confirmed by pathology results.Receiver-operation characteristic curve (ROC) analysis showed that the area under curve (AUC) in 1.5T and 3.0T group was 0.94 and 0.89,diagnostic sensitivity was 95.0％ and 85.8％,specificity was 91.4％ and 80.7％,positive predictive value (PPV) was 92.7％ and 76.1％,negative predictive value (NPV) was 94.1％ and 88.8 ％,respectively.There was no significant difference of diagnostic accuracy between the two groups (P＞0.05).Conclusion:Both 1.5T and 3.0T mpMRI using PI-RADS version 2 perform well for detecting clinically significant prostate cancer.
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