Hi Peter,
I am very happy with a second PSA of 0.02 after my HIFU and would gladly defer another MRI until there is a significant increase in PSA. However, I am very grateful that the Professor who did the procedure was prepared to repeat it, particularly as the top HIFU man previously declined to do so. If the reason for the scan is to help with research or for statical purposes, I am happy to have it. Even if the scan shows some tumour, they will not do a further focal treatment, so it will just be HT at some point.
There remains the possibility that the booking clerk who made the appointment acted precipitously or on outdated information which wouldn't be the first time! I have decided to try to ask more questions but it's a bit like when you take your car in for work at a franchised dealer. You sometimes have to get by an uninformed receptionist to actually speak to a technician who is involved with your car.
Meanwhile, I must update myself on current thinking on long term adverse effects of much Gadolinium.