Hi Judy, I had Gamma Knife in January 2002 at University of Virginia and three years later my tumor has be resolved. My first surgery was in June 1994 and I thought that is was successful. I thought doctors know "everything". Well, needless to say the tumor came back. This time after having blood work and MRI to confirm the tumor; I went on to the Net to find my alternatives. I came across the Gamma Knife and I was very fortune to find someone on this site who had the Gamma Knife. After speaking to him and reanding the information about the procedure I told my doctor this is what I wanted. She called and made arrangements (sent MRI and bloodwork) and within a week I was at UVA. I met with a Dr Steiner (?) and felt very comortable with him. After speaking with him I had all kinds of test, blood work, eye examination and etc. The next morning I was at the hospital and the very first thing they did was fit me for a head halo. This is used later on the keep you head from moving during the procedure. After that, I had an MRI and then waited for the results. The had to map where the tumor is and how best to insure the radiation does not affect any other part of your brain. His group spent about an hour and half and then into the machine. The machine is like an MRI and the whole thing took about 90 minutes. I was up in my room that night and discharged the following morning. In fact, I helped to drove home and by Monday morning was back at work. Not effects at all. Six months after the procedure I had a follow-up MRI and the tumor was decreasing. Dr Steiner said at the time it could take about two years to see any change since these tumors are slow growing and therefore they decrease the same way, slow. This past June I had another MRI and the dr's said the tumor has been resolved after three years. I can't say this will happen in every case, but somebody was looking out for me. So far the pituitary is still working and it is very possible that I could lose some functions. I am taking meds for thyroid and replacement of testosterone. Would I do it again this one, yes. Do I have concerns about the loss of pituitary, yes. But what are our choices? I hope this helps in your decision and if you or anyone else has any questions please do no hesitate. Fred | 