RADIOGRAPHIC EFFECTS TERMS

Question 1

produces many smaller molecules, decreases viscosity

Answer 1

main chain scission

Question 2

makes side chains sticky; increases viscosity

Answer 2

cross-linking

Question 3

disrupts chemical bonds

Answer 3

point lesions

Question 4

since 80% of the body is water this is significant

Answer 4

radiolysis of water

Question 5

radio protectors and radio sensitizers

Answer 5

chemical agents

Question 6

contains the -SH group; they compete w/ oxygen for free radical binding

cysteine and cysteamine

Answer 6

radioprotectors

Question 7

contain halogenated pyrimidines

methotrexate, gemcitabine

Answer 7

radio sensitizers

Question 8

name this effect

severity is dependent on the dose and only occurs w/ high dose >.5gy/50 rads

Answer 8

non stochastic effect

Question 9

name this effect

severity is independent on the dose

Answer 9

stochastic effect

Question 10

name this effect

acute radiation syndromes

Answer 10

acute deterministic effect

Question 11

this is a term used in acute radiation

requires mega radiation levels

Answer 11

lethality

Question 12

this is a term used in acute radiation

affected because its a continual renewal system

Answer 12

skin

Question 13

immature spermatogonia divide rapidly

Answer 13

testes

Question 14

temporary sterility

Answer 14

200 rads

Question 15

permanent sterility

Answer 15

500 rads

Question 16

a mature oocyte is the most radiosensitive thing

Answer 16

ovaries

Question 17

suppression of menstruation

Answer 17

10 rads

Question 18

temporary sterility

Answer 18

200 rads

Question 19

permanent sterility

Answer 19

500 rads

Question 20

lowers number of blood cells in peripheral circulation

Answer 20

hematologic depression

Question 21

manifests during the next cellular mitosis (a non threshold dose response)

Answer 21

cryogenic damage

Question 22

name this type of chromosomal aberration?

occurs at very low radiation doses

Answer 22

single hit chromosomal aberrations

Question 23

name this type of chromosomal aberration?

occurs at very high radiation doses

Answer 23

multi hit chromosomal aberrations