875 / 1311
Target volume definition: pre-op
•
Tumor:
–
GTV
: primary – perigastric
tissue
–
CTV
= GTV +
1.5 cm
•
Nodal:
–
GTV:
positive nodes
–
CTV
: GTV +
0.5 cm
Upper 3
rd
Middle 3
rd
Lower 3
rd
Matzinger O et al – Raadiother Oncol – 2009