Dose Course 2018_Flipping book

Convolution with a kernel to account for phantom scatter and electron transport

Pixel to dose at 10 cm depth in a cylindrical phantom calibration

Off axis correction

Correct for arm back scatter (if needed)

How is this Kernel constructed:

1. The relative dose as a funtion of field size matches the TPS

calculation at the phantom center

W. Ansbacher, Med Phys (33;9), 2006 B. W. King et al. JAMP (17;6), 2016

2. Penumbraal edge of a typical field is broadened to the same

extend it would be at the depth of the phantom center