I had a break for about a week after a having just a few IMRT treatments before they changed the radiation field. Also I think that you need a significant radiation dose before you actually fry your glands and I seriously doubt that this happens within just a few days. Also, IMRT is quite good to treat a more diffuse (larger) target and it still allows you to spare certain regions (if you choose to).
Having said this, I echo Davids sentiment. I would listen to the IMRT guys.

M





Partial glossectomy (25%) anterior tongue. 4/6/07/. IMRT start @5/24/07 (3x) Erbitux start/end@ 5/24/07. IMRT wider field (30x) start 6/5/07. Weekly cisplatin (2x30mg/m2), then weekly carbo- (5x180mg/m2). End of Tx 19 July 07.