Dose Course 2018_Flipping book

Dose rate dependence in photon beams

Diodes

6 MV

Shielded diode

15 MV

Liquid ion chamber

2.5%

Diamond

6 MV

Djouguela et al [7]

Dose per 3  s pulse between 0 and 0.3 mGy.

This positive dose rate dependence is often referred to as supralinear .

Saini et al [8]

Dose per 4.5  s pulse (150 Hz) between 0.03 and 0.38 mGy.

0.3 mGy per pulse corresponds to approximately 3-4 Gy/min on a regular medical accelerator.

Westermark et al [3]