Yueyue Zhang, Wenlu Zhao, Chaogang Wei, Tong Chen, Mengjuan Li, Shuo Yang, Shuangxiu Tan, Beibei Hu, Qi Ma, Yongsheng Zhang, Boxin Xue, Junkang Shen
Abstract
ObjectiveTo explore the difference in efficacy between multiparametric MRI (Mp-MRI) based on prostate imaging reporting and data system version 2 (PI-RADS v2) and abbreviated biparametric MRI (Bp-MRI) in detecting prostate cancer (PCa) and clinically significant prostate cancer (csPCa), and to evaluate the consistency of image interpretation between different readers.
MethodsThe imaging, pathological and clinical data of patients with prostatic Mp-MRI in our hospital from February 2015 to June 2018 were retrospectively analyzed. At the beginning, 250 patients were randomly selected. Two radiologists visually evaluated the images of those patients using two 5-point scoring schemes based on Mp-MRI and Bp-MRI. The remaining cases were independently proceeded by one of the radiologists using two schemes respectively. Weighted Kappa test was used to assess the consistency of the results interpreted by the two radiologists. The receiver operating characteristic (ROC) curve was used to evaluate the efficiency of the two scoring schemes in detecting PCa and csPCa, and with Z test to investigate whether there was any difference in detection efficiency between the two schemes.
ResultsNine hundred and seventy eight patients were eventually enrolled in the study. The results of the consistency assessment showed that there was good agreement between the two radiologists, whether using Mp-MRI or Bp-MRI, with the weighted Kappa coefficient of 0.800 and 0.812, respectively. The ROC curve analysis showed that the area under the curve (AUC) of PCa detected by Mp-MRI and Bp-MRI was 0.873 and 0.879, respectively, and the AUC of csPCa detected was 0.922 and 0.932, respectively. In addition, there was no statistically significant difference between the AUC of PCa and csPCa detected by the two schemes (P>0.05).
ConclusionThe Bp-MRI scoring scheme has good stability in the evaluation of benign and malignant prostate, and its detection efficiency of PCa or csPCa is not lower than that of standard Mp-MRI based on PI-RADS v2.
Key words:
Prostate neoplasms; Magnetic resonance imaging; Prostate imaging reporting and data system; Comparative study
Contributor Information
Yueyue Zhang
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
Wenlu Zhao
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
Chaogang Wei
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
Tong Chen
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
Mengjuan Li
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
Shuo Yang
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
Shuangxiu Tan
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
Beibei Hu
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
Qi Ma
Department of Ultrasound, Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Yongsheng Zhang
Department of Pathology, Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Boxin Xue
Department of Urology Surgery, Second Affiliated Hospital of Soochow University, Suzhou 215004, China
Junkang Shen
Department of Imaging, Second Affiliated Hospital of Soochow University, Institute of Radiotherapy and Oncology, Soochow University, Suzhou 215004, China
