Tissue Tolerances TD 5/5 Flashcards
T/F: our organs and tissues all react to radiation differently
TRUE
what does TD 5/5 represent?
TD 5/5 represents the dose of radiation to healthy tissue that will cause a 5% chance of complication within 5 years of delivered dose!!!
3/3; 5/5; whole organ has a ___higher/lower___ tolerance than 1/3 of organ
lower
concept check:
LESS of an organ irradiated, the HIGHER OR LOWER, the dose it will tolerate?
less organ irradiated - more/higher the dose it can take!
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
eye lens
1000 cGy
cataracts; blindess
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
lung
1750 cGy
pneumonia
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
kidney
2300 cGy
nephritis
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
ear mid/external
3000 cGy
acute serous otitis
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
parotid
3200 cGy
xerostomia
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
small intestine
4000 cGy
obstruction, perforation, fistula
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
heart
4000 cGy
pericarditis
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
colon/large intestine
4500 cGy
obstruction, perforation, fistula
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
brain
4500 cGy
nerve damage
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
eye retina
4500 cGy
cataracts//blindness
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
larnyx (low dose)
4500 cGy
laryngeal edema
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
larynx (high dose)
7000 cGy
cartilage necrosis
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
spinal cord
20cm 4700 cGy
myelitis necrosis
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
stomach
5000 cGy
ulceration, perforation
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
brainstem
5000 cGy
necrosis, infarction
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
optic nerve
5000 cGy
blindness, necrosis, infarction
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
optic chiasm
5000 cGy
blindness, necrosis, infarction
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
femoral head
5200 cGy
necrosis
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
esophagus
5500 cGy
stricture, perforation
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
skin
100 cm^2 / 5500 cGy
telangiectasia, necrosis, ulceration
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
rectum
6000 cGy
proctitis, necrosis, fistula
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
TMJ/mandible
6000 cGy
limited function
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
cauda equina
6000 cGy
nerve damage
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
brachial plexus
6000 cGy
nerve damage
what is the TD 5/5; 3/3 limit and effect once reached for the following organ/tissue?
bladder
6500 cGy
bladder contracture, volume loss
