Course book Advanced Treatment Planning 2018

@RT_physics

Is adaptation clinically important?

• Image-guided radiotherapy (IGRT) is commonly utilised to aid patient positioning • Most evidence relies on surrogate outcomes

Aims • To assess whether the magnitude of residual bony setup errors following IGRT relate to patient survival • Test effect directionality of the errors to get information about the underlying cause

• → Can we relate a small change in dose with outcome?