Advanced TP

Effect of energy in IMRT planning

 6 MV, 10MV, 18MV - sharp gradients can only be created using the beam penumbra so, 6 MV often results in the best plan, in terms of OAR sparing

- however, the volume treated with low dose differs a lot between different energies

- 6 MV in pelvic region??

- combination of different energies is a good option (computer based choice?)