Hi Amy
Ok, here goes.
I had CK in Boston over 3 yrs ago. the decision was made by my team and me to have my CK "fractionated" over 5 days at 6Gy/day (total, 30Gy.... most CK patients are anywhere from 18-21 up to 30Gy total). the reason for the "fractionation" was to help preserve my hearing (at time of CK, my voice recognition, etc was at approx 92%). My personal goal was to save my hearing. By fractionating, it was to help any surrounding structures "heal" in between treatments if they were to be "hit" by the radiation........
Now, over 3 yrs later... my last hearing test shows my voice recognition, etc, still at over 92%. Thus, for me, my personal goal was achieved.
the overall feeling is that with GK, many opt for it if their serviceable hearing is at a substantial loss (as well as other reasons, ie: treatment in 1 day vs. numerous days, etc). For many, some opt for a "fractionated" approach as it may help maintain higher hearing levels post treatment.
Many have noted that within the first 4-16 mos, they may experience a temp hearing reduction that may be treated with a short-term course of anti-inflammatories (ie: Ibuprofen, Steroids ie: Decadron, Medrol DosePak, etc). the feeling is the that temp hearing loss down the road may be due to internal swelling of the AN, post-radiation. If you do experience some hearing loss post treatment, speak to your radiation team so they can work with you for a course of treatment to help it out.
Regarding the tinnitus... as we know, there is no true medical cure for it and there are no guarantees of it going away post-radiation. Some here have noted that it had diminished... some noted it has enhanced... in my case, mine remains about the same.
As we know... "individual results may vary.....", so I've shared with you personal experience and what others have noted here on the forums......I hope this helps during your decision making process. We are most certainly here to help!
Phyl