Target Volume Determination 2016

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M. Ng, et al. (AGITG) Int J Radiation Oncol Biol Phys, 2012

C

LINICAL

TARGET

VOLUME

FOR

GROSS

DISEASE

P

RIMARY

TUMOR

M. Ng, et al. (AGITG) Int J Radiation Oncol Biol Phys, 2012

CTV-T

•

GTV

•

entire

anal canal

•

internal and external

sphinter

•

20 mm

isotropic margin, while

respecting anatomical

boudaries