When I had the treatment with the mask I had a sports type mouth guard in to keep my mouth closed, I had two grab handles postioned for me to grab hold of and my knees were bent and a rubber band used to keep them in place during treatment, then the Tecs Xrayed my head and neck before they started the damn machine to make sure that I was in a perfect position! It took all the Marine Corps decipline that I could muster to get thru the 20 minute treatment. Good luck and best wishes. Semper-Fi Bob

Bob age 57, non smoker,non drinker, ended treatment on 11 Nov 2007 and started back to work on 29 Nov 2007. Veterans Day 2012 the Battle was lowered, folded, Taps was played and the Flag buried as I am know a 5 year survivor. Semper-FI !!!