Gamma knife is a piece of cake. It is about a tenth as bad as the needle ablation. There is no pain. You have this huge device which looks like a CAT scanner, that has a helmet on the end of the gurney you lay on. You stick your head into this helmet. It has like 60 high energy linear accelerator tubes on the helmet, they look like slender beer cans,(well you don't see that part because it is in the machine) and each as an extremely powerful xray emitter in it. The computer can swivel each tube to colimate the beam from all of the emitters to focus on a single point. Did you ever see the death star in Star Wars, I think they had the concept in that movie. Anyway, you get blasted with an enormous dose but in a 1 to 2 mm spot, with no collateral damage as they say in the war effort. Put your head in the scanner, wham, and you are done, like going to the dentist, but much more serious. The thing about gamma knife is that it is the "do no harm" type of treatment, because if it works, great, but if it doesn't you still have sensation on the face, there are no serious complications if done correctly.
Ask me more questions, tell me where you live in Australia and I can try to find you a location to get zapped, no I mean just talk to a neurologist about getting zapped.
Or you can come to the US?
Please hit the accept if you feel I answered your question, you can still come back to chat as much as you like. ok? Wow, you have a great family history, I have to research what has been done as far as the genetics of tic Dr. Frank T.