Multiparametric MRI
All patients underwent 3.0 Tesla (T) MRI (Magnetom Verio; Siemens Health Care, Erlangen, Germany) according to Prostate Imaging-Recording and Data System (PI-RADS) version 2 (v2) standards [7]. Sequences including high resolution T2-weighted turbo spin-echo images in three orthogonal planes, DWI, and DCI were evaluated using PI-RADS v2 by two radiologists with 15 years of experience. Details of sequence parameters are summarised in Table 1. Contouring of lesions with a PI-RADS score of ≥ 3 were also performed by these radiologists.