My father is on the same medicine as you are on right now. He has to have his blood taken every week to make sure everything is alright. The gamma laser is a box that they put on the patient's head. To keep the box in place they drill holes into the skull and then into the brain so the box does not move at all. Then the patient sits and waits while the lasers are released into the brain. The patient is kept awake because they have to sence something that happens when the procedure is complete. I know that they are doing this procedure in Atlanta, Georgia and my dad is to have it done in November at Stanford University by Dr. Wasserstein. That is all I know about it. Maybe someone else out their knows more about it. I pray that everything is going well with you. You will be in my prayers. If you need to talk just email me. God Bless, Eddie Amundsen