Dose Course 2018_Flipping book

2D detectors [EPID]

3. Predict primary fluence from transit images

❑ Measure transit EPID dose

primary fluence

❑ Convert to dose at EPID level

❑ Deconvolve EPID dose with lateral scatter kernel and back-project through patient/phantom to estimate primary fluence

❑ Use primary fluence as input to calculate dose distribution in patient/phantom

EPID

Hansen

Med Phys (23) 1996 Med Phys (28) 2001 Med Phys (29) 2002

Kapatoes Partridge

dose calculation algorithm