183 / 815
Energy Selection
•
Higher maximum dose in plan with lower energy
•
Lower isodose lines reach a greater depth with higher energy
(See 50% isodose line on previous slide)
•
Increased skin sparing with higher energy
6MV dmax = 1.6 cm
15MV dmax = 3 cm
*Consider the patient separation
*Consider the need for dose on skin or in the build up region
(superficial target)