<prompt> AE used to detect Ca. prostate gland :a PSAb MRIc CT Scand DSAe TRUSabcacdbcdbd  <response>: Investigation used to detect Ca Prostate are PSA TRUS including TRUS guided biopsyCross-sectional imaging by CTMRI of the pelvis are used for staging purpose excluding lymph node metastasisX-rays bone scans are used to detect lung bone metastases. 