Nancy
to help answer your question... and I believe this to one of the many reasons for CK... by "fractionating" a radio-treatment, it is suppose to help with hearing preservation. As you saw in my earlier post, I have much of my hearing. My goal was to try to save as much as I could. There are stats that show that by fractionating radio-treatment, there is suppose to be a higher % of hearing preservation (as you already noted, "individual results may vary"....). My understanding in speaking to many (MaryBKAZ and others), that for those that choose 1 dose radio-treatment, they tend to have a lower % of serviceable hearing, thus, they choose 1 dose (regardless if GK or single dose CK, as in MaryBKAZ's case). For me, I choose fractionated CK due to the higher % of hearing preservation noted in order to try to save mine. In my case, I have been lucky and they did, indeed, save mine. As you can see, I was treated in Boston. I am very fortunate to have a wonderful medical community here, thus, where I chose was for me, a non-issue. I believe BI has the CK and FSR. I know other facilities locally that offer GK (Dr. Noren in Providence, RI... only a 45 min car ride away) as well as Tufts University.... Brigham/Woman's offers Novalis and has a purchase requisiton for a CK. I know Mass General Hosp offers FSR and Proton..... all viable treatment options for AN's.
Hoping others will chime in to elaborate.
BTW, in your GK Stories Only thread, you question if Mark was pre-treatment, etc. (Mark, just trying to help!).... Mark is over 7 yrs post-Cyberknife. Mark is one of only a few that I know that are this far down the road post CK treatment.
Hope this helps.
Phyl