I think it is rare that any of the scans are done just from the usual biopsy results. With the occasional exception of a biposy that shows cancer in lots and lots of the cores, at a high percentage rate, it isn't normally done. My scores are close to yours and it wasn't considered in my 'fairly normal' test results for cancer.
4/19/07 PSA 7.6, referred to Urologist, recheck 6.7 06/05/07
7/11/07 Biopsy- 16 core samples, size of gland around 76 cc. Staging pT2c
7/17/07 Path report: 3 of 16 PCa, 5% involved, left lobe , GS 3/3:6.
9/24/07 (Open) Retropubic Radical Prostatectomy performed
9/26/07 Post-op Path Report: GS 3+3=6 Staging pT2c, 110gms, margins clear
10/15/07 ED- begin 25mg Viagra nightly, Fully continent
11/15/07 1st Post-surgery PSA-0.01
01/14/08 Caverject started/stopped, aching and pain , Bimix started
02/04/08 Bimix X 6 tries, .1mL, .15mL, .2mL, .3mL, .4mL, .5mL, success at .5mL
3/24/08 ED- 6 mts.-continue 50mg Viagra and pump-no change-no response