Doctor orders ProstaScint...

My Doctor has scheduled a ProstaScint test for Thursday, June 7th.
He says this is a pretty advanced test.
Didn't ask him (doctor) enough questions. Told me it's a test for cancer spread to soft tissues. Has anyone had this test? Even if you haven't, comments, advice appreciated....

Age- 54
Bx- Gleason 10
PSA-Before treatment 5.7
Dx- Gleason 9 both lobes
Seminal Vesicle Involvement
PSA- May 29, '07.... .01 Negligible


Thanks for reading....Vet

P.S. For got to add that doc wants this
test despite neglible PSA because I have pain in kidney area and lower right back.

Thanks...Vet