RADIOGRAPHIC EFFECTS TERMS Flashcards
produces many smaller molecules, decreases viscosity
main chain scission
makes side chains sticky; increases viscosity
cross-linking
disrupts chemical bonds
point lesions
since 80% of the body is water this is significant
radiolysis of water
radio protectors and radio sensitizers
chemical agents
contains the -SH group; they compete w/ oxygen for free radical binding
cysteine and cysteamine
radioprotectors
contain halogenated pyrimidines
methotrexate, gemcitabine
radio sensitizers
name this effect
severity is dependent on the dose and only occurs w/ high dose >.5gy/50 rads
non stochastic effect
name this effect
severity is independent on the dose
stochastic effect
name this effect
acute radiation syndromes
acute deterministic effect
this is a term used in acute radiation
requires mega radiation levels
lethality
this is a term used in acute radiation
affected because its a continual renewal system
skin
immature spermatogonia divide rapidly
testes
temporary sterility
200 rads
permanent sterility
500 rads
a mature oocyte is the most radiosensitive thing
ovaries
suppression of menstruation
10 rads
temporary sterility
200 rads
permanent sterility
500 rads
lowers number of blood cells in peripheral circulation
hematologic depression
manifests during the next cellular mitosis (a non threshold dose response)
cryogenic damage
name this type of chromosomal aberration?
occurs at very low radiation doses
single hit chromosomal aberrations
name this type of chromosomal aberration?
occurs at very high radiation doses
multi hit chromosomal aberrations
