What positioning and immobilization technqiues do you use for anal canal carcinoma radiotherapy in the era of IMRT?

Supine, frog-leg position facilities the use of a vaginal dilator which is critical for sparing the introitus during contouring. Patient reported outcomes from M.D. Anderson indicate 75% sexual satisfaction with the use of the dilator/IMRT versus 33% with IMRT alone. This is a good indicator of the ...