第2版前列腺影像报告和数据系统(Prostate Imaging Reporting and Data System Version 2,PI-RADS V2)是一个应用多参数磁共振成像(multiparametric magnetic resonance imaging,mp MRI)检查进行前列腺临床显著癌诊断的影像学规范。PI-R...第2版前列腺影像报告和数据系统(Prostate Imaging Reporting and Data System Version 2,PI-RADS V2)是一个应用多参数磁共振成像(multiparametric magnetic resonance imaging,mp MRI)检查进行前列腺临床显著癌诊断的影像学规范。PI-RADS V2制定了mp MRI技术参数的最低标准,简化并标准化影像学报告内容,提出了与前列腺临床显著癌风险相关的分级标准。笔者根据PI-RADS V2的标准化要求,结合本单位实际临床工作中的经验,构建了前列腺mp MRI的结构式报告模板,旨在对该结构式报告进行解读。展开更多
Background： The European Society of Urogenital Radiology has built the Prostate Imaging Reporting and Data System （PI-RADS） for standardizing the diagnosis of prostate cancer （PCa）. This study evaluated the PI-RA...Background： The European Society of Urogenital Radiology has built the Prostate Imaging Reporting and Data System （PI-RADS） for standardizing the diagnosis of prostate cancer （PCa）. This study evaluated the PI-RADS diagnosis method in patients with prostate-specific antigen （PSA） 〈20 ng/ml. Methods： A total of 133 patients with PSA 〈20 ng/ml were prospectively recruited. T2-weighted （T2WI） and diffusion-weighted （DWI） magnetic resonance images of the prostate were acquired before a 12-core transrectal prostate biopsy. Each patient＇s peripheral zone was divided into six regions on the images; each region corresponded to two of the 12 biopsy cores. T2WI, DWI, and T2W1 ＋ DWI scores were computed according to PI-RADS. The diagnostic accuracy of the PI-RADS score was evaluated using histopathology of prostate biopsies as the reference standard. Results： PCa was histologically diagnosed in 169 （21.2%） regions. Increased PI-RADS score correlated positively with increased cancer detection rate. The cancer detection rate for scores 1 to 5 was 2.8%, 15.0%, 34.6%, 52.6%, and 88.9%, respectively, using T2W1 and 12.0%, 20.2%, 48.0%, 85.7%, and 93.3%, respectively, using DWI. For T2WI ＋ DWI, the cancer detection rate was 1.5% （score 2）, 13.5% （scores 3-4）, 41.3% （scores 5-6）, 75.9% （scores 7-8）, and 92.3% （scores 9-10）. The area under the curve for cancer detection was 0.700 （T2WI）, 0.735 （DWI） and 0.749 （T2WI ＋ DWI）. The sensitivity and specificity were 53.8% and 89.2%, respectively, when The summed score ofT2Wl ＋ DWI展开更多
文摘第2版前列腺影像报告和数据系统(Prostate Imaging Reporting and Data System Version 2,PI-RADS V2)是一个应用多参数磁共振成像(multiparametric magnetic resonance imaging,mp MRI)检查进行前列腺临床显著癌诊断的影像学规范。PI-RADS V2制定了mp MRI技术参数的最低标准,简化并标准化影像学报告内容,提出了与前列腺临床显著癌风险相关的分级标准。笔者根据PI-RADS V2的标准化要求,结合本单位实际临床工作中的经验,构建了前列腺mp MRI的结构式报告模板,旨在对该结构式报告进行解读。
文摘Background： The European Society of Urogenital Radiology has built the Prostate Imaging Reporting and Data System （PI-RADS） for standardizing the diagnosis of prostate cancer （PCa）. This study evaluated the PI-RADS diagnosis method in patients with prostate-specific antigen （PSA） 〈20 ng/ml. Methods： A total of 133 patients with PSA 〈20 ng/ml were prospectively recruited. T2-weighted （T2WI） and diffusion-weighted （DWI） magnetic resonance images of the prostate were acquired before a 12-core transrectal prostate biopsy. Each patient＇s peripheral zone was divided into six regions on the images; each region corresponded to two of the 12 biopsy cores. T2WI, DWI, and T2W1 ＋ DWI scores were computed according to PI-RADS. The diagnostic accuracy of the PI-RADS score was evaluated using histopathology of prostate biopsies as the reference standard. Results： PCa was histologically diagnosed in 169 （21.2%） regions. Increased PI-RADS score correlated positively with increased cancer detection rate. The cancer detection rate for scores 1 to 5 was 2.8%, 15.0%, 34.6%, 52.6%, and 88.9%, respectively, using T2W1 and 12.0%, 20.2%, 48.0%, 85.7%, and 93.3%, respectively, using DWI. For T2WI ＋ DWI, the cancer detection rate was 1.5% （score 2）, 13.5% （scores 3-4）, 41.3% （scores 5-6）, 75.9% （scores 7-8）, and 92.3% （scores 9-10）. The area under the curve for cancer detection was 0.700 （T2WI）, 0.735 （DWI） and 0.749 （T2WI ＋ DWI）. The sensitivity and specificity were 53.8% and 89.2%, respectively, when The summed score ofT2Wl ＋ DWI
