Just had Gamma Knife for 1.5cm right side AN with Dr. Kondziolka at the Hackensack UMC in NJ. Doctors and nurses were great - the whole procedure lasted about six hours including time for the headframe, MRI and the actual procedure. I was thinking that the headframe would hurt but it is painless (probably the anesthesia helped !). I was prescribed a steroid pack to reduce chances of any swelling post-procedure.
I am grateful to the wonderful people posting on this site that enabled me to research AN, know more through your first hand experiences and make an educated decision on which treatment path to go with. I had seen surgeons, Gamma Knife and Fractionated specialists at NYU and Philadelphia before deciding on Gamma Knife at Hackensack.
Happy to help if any one needs information on Hackensack UMC / GK procedure - please PM.