Hey Paul, trust me - I don’t want it either. As a dentist for 42 years, I hid behind a wall whenever I took x-rays. Not only is it a state law here in New York, but it’s for your own well-being. Now I’m going to voluntarily put myself on a table and get exposed to a massive amount of ionizing radiation. Ironic, isn’t it?
Anyway, if you can have the Linac that is a great option - even better than Cyberknife because it uses
MRI visualization instead of CAT technology to radiate the area. The result is much less damage to the surrounding tissues. Don’t get me wrong, Cyberknife is excellent but MRI Linac even better.
However, it’s not really an option if you have any cells outside the prostate and the surrounding area - for this you need IMRT which is what I will be getting. It targets everything from the head of the femur to perhaps just below the navel. They give a higher dose, of course, to the prostate and involved structures since that is the ‘fort’ the tumor is inside of. Not very technical but I am sure some of our friends here on the board can post some YouTube URLs to give you a better explanation.
You are 74 and have had other issues so surgery might not be what you want but I don’t know your mindset. Just know that the outcomes (successes AND failures) for surgery vs radiation is about the same after 10 yrs or maybe a bit more since the study was done.
Best of luck to you and if I can repeat the sentiments of others, you came to the right place for help!!!

@paul28 — you can go back and edit a post for a limited time (I think an hour) after you've sent it. Just select the three dots below the message. If "Edit" appears as an option, then you're still inside the time window.