2017_IGRT course book

Image-guidance for whole breast (+/- nodes)

• EPID field images (i.e. not orthgonal) underestimate bony set-up errors by 20% to 50%

• Difference probably insignificant for tangential whole breast irradiation

EPID kV CBCT

• Loco-regional treatment or more advanced techniques (SIB? IMRT?) could benefit from a more accurate set up.

Topolnjak IJROBP 2010