 The potentials of this novel technique in general and its impact on assessing patients individual risk to support a therapy or active surveillance decision in a future modified urological patient management were not yet explored in detail, but an initial prospective clinical trial in 38 patients with a sequential PETMRI technique demonstrated the ability of a significant improvement of the individual methods. This registered prospective, randomized clinical trial is intended to proof, in a first step, the superiority of PETMRI vs. the actual clinical standard procedures by applying a stable multiparametric metabolic hybrid imaging protocol. The aim of this study is to reduce the number of unnecessary invasive procedures to a minimum image guided biopsy and to enable superior image guided risk stratification. 