Hi saloman,
I'm sorry about your AN, but glad that you found this forum. There is invaluable advice and experience here. I agree with PaulW, that you might want to look into radiation. I found the site myacoustic.org instrumental in choosing my treatment and my doctor. Please listen to the two interviews posted there. I wish you all the best and hope you keep posting.
To MG: I just wanted to let you know that the CK "mask" does not tightly cover your mouth or eyes. When the mask is made, the material is soft and warm, and the folks that made my mask actually tore holes in the plastic webbing where my eyes and your mouth were. They also pulled it away from my nose to give it space :-). When I wore the mask for my treatment, I could choose to open my eyes or not (I peeked occasionally). Mouth-breathing would be a good question for the technicians! I had 3 thirty minute treatments during which I could feel nothing. For me, the mask and multiple treatments were a better choice than a headframe and single treatment. Rodneyd explains it well. Best of luck to you.
sunnny