857 / 1609
CTV (=PTV) definition from the cavity
A = minimal resection
margin
B = radiation margin
B = 20 mm - A
ANT = 5 mm
MED = 10 mm
LAT = 13 mm
B
LAT
ANT
MED
GEC-ESTRO Recommendations for APBI PTV
Definition After Open Cavity Surgery
Csaba Polgár & Tibor Major. National Institute of
Oncology, Budapest, Hungary