Microsoft Word - Scientific Program IGRT 2016 Madrid V3

IGRT and Imaging dose…

Dose / acquisition

Patient dose for a 78Gy

treatment (2Gy fractions)

MV Electronic Portal Imaging

~ 30 mSv

2340 mSv

Device

(3 MU, isocenter dose)*

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

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* Dose measurements at UZ Brussel

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** D. Jaffray 2006

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*** J. Pouliot 2006