ESTRO course on Image Guided Radiotherapy in Clinical Practice 2018

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

EPID kV CBCT

• EPID field images (i.e. not orthgonal)

underestimate bony set-up errors by

20% to 50%

• Difference probably insignificant for

tangential whole breast irradiation

• Loco-regional treatment or more

advanced techniques (SIB? IMRT?)

could benefit from a more accurate

set up.

Topolnjak IJROBP 2010