Femoral head and neck:
The entire femoral head
and neck should be
contoured. The inferior
extent is the cranial edge
of the lesser trochanter.
Urinary bladder:
The entire
external outline of the
bladder wall should be
contoured.
M. Ng, et al. (AGITG) Int J Radiation Oncol Biol Phys, 2012
Gay HA et al. Int J Radiat Oncol Biol Phys. 2012