Planning OAR Tolerances Flashcards
Tolerances for Rectum
V50<50%
V60<35%
V65<25%
V70<20%
End Point toxcity for rectum
- grade 3+
- diarhhoea
- pain
- ulceration
Tolerances for bladder
V65<50%
V70<35%
V75<25%
V80<15%
End point toxcity for bladder
- grade 3+
- dysuria
- incontinence
Tolerances for femoral H & N
V35<100%
V50<10%
End point for femoral H & N
- femoral neck fracture
- femoral head necrosis
Tolerance for penile bulb
D90<50Gy
End point for penile bulb
- erectile dysfunction
Tolerance for SC
max 45Gy
End point for SC
myelopathy and paralysis
Tolerance for brainstem
max 54Gy
End point for brainstem
neuropathy or necrosis
Tolerance for optic chiasm
max 50/54Gy
End point for optic chiasm
optic neuropathy
Tolerance for lens
max 7Gy
End point for lens
blindness
Tolerance for parotid
bilteral mean 25Gy
unilateral mean 20Gy
End point for parotid
long term salivary function <25%
Tolerance for oral cavity
mean 40Gy
Tolerance for ipsilateral lung
V20<20%
End point for lung
symptomatic pneumonitis
Tolerance for heart
V25<10%
mean <6Gy
End point for heart
pericarditis
Tolerance for cochlea
mean 45Gy
End point for cochlea
sensory-neural hearing loss
