Dose Course 2018_Flipping book

2D detectors [EPID]

1 – Forward from transit images

❑ Measure transit EPID dose (D

)

EPID_meas

❑ Extend patient CT data to EPID level and calculate TPS EPID dose (D EPID_calc )

❑ Compare measured with calculated EPID dose

D

= D

?

EPID_meas

EPID_calc

McNutt Pasma

Med Phys (23) 1996 IJROBP (45) 1999

Van Esch

Radiother Oncol (60) 2001