2017_IGRT course book
IGRT and Imaging dose…
Dose / acquisition
Patient dose for a 78Gy treatment (2Gy fractions)
MV Electronic Portal Imaging Device
~ 30 mSv (3 MU, isocenter dose)*
2340 mSv
MV cone beam CT
~ 20-90 mSv (0.005 MU/°, isocenter dose)***
1950 mSv
Stereoscopic kV-imaging
~ 0.51 mSv (surface dose)*
40 mSv (400 mSv, gating)
kV cone beam CT
~ 50 mSv (surface dose)**
1950 mSv
MV CT (TomoTherapy)
~ 20 mSv (isocenter dose)*
780 mSv
▪ * Dose measurements at UZ Brussel ▪ ** D. Jaffray 2006 ▪ *** J. Pouliot 2006
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