Hi John, based on the relatively light treatment you received, I am sure your raspy voice will improve gradually.No guarantee whether it can be 100% back to normal. Ask your doctor to confirm that the radiation did not hit your vocal cord. For tonsil cancer, I think our voice is protected. My hoarseness is mainly due to absence of saliva. The voice is generally deeper than before and I can't tell when it is raspy and when it is clear during the day. It varies a lot but does not affect my teaching as long as I have water, hard candies or chewing gum.

Karen.