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
