Hi Suzi,
I am also surprised that Dad's case has not been handed over to an oncologist because it seems to me that the surgeon has played his part and his interest is now mainly academic unless he considers going back in and removing lymph nodes for example..
Clearly, either the surgeon or oncologist would benefit from good quality scans in order to direct treatment more precisely but the wait for a PSMA scan has to be set against detail that could be obtained from a lesser but more quickly and readily available scan..
Unless the situation has changed radically in the last few months, I believe there are only about 6 centres in the UK doing PSMA and all of these are in the London area. Consultant's now know about this with the result that not only do those scanners serve their local area but men are being referred from all over the country, and the latter mostly as paying patients. The problem is compounded when there is a problem where the shared generator for the tracer breaks down (as happened in my case) so that all the London Hospitals were affected until the machine was fixed. So another reason for backlog and delay. With the Choline scan where the hospitals have to by in the tracer there has also been problems as a number of us have experienced and this too can lead to delays.
The going rate for a PSMA scan privately is about £2600 and a patient needs to be referred by a Consultant, not just a GP. Dad, (or you), could ring round to check costs and waiting times as a possibility, as your present surgeon could refer and 'call over' the scan. The Choline scan I believe is less expensive and available at rather more hospitals and further afield.
I would seek an urgent appointment with an Oncologist,