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Toxicology > Radiation > Flashcards

Flashcards in Radiation Deck (12):
1

5 types of radioactive decay?

1. alpha particles
2. beta particles
3. gamma rays
4. positrons
5. capture of electrons

2

What type of shielding typically prevents passage of alpha, beta, gamma?

alpha - piece of paper
beta - human
gamma - several feet of lead

3

1 Sievert = ? rem

1 sVm = 100 rads

4

Difference between rem and rad?

rem takes into account the type of radiation

5

Most common natural radiation exposure?

Radon

6

Most frequently ingested form of radiation?

40K.

7

Stochastic effect

No dose of radiation too small to have potential to cause cancer.

8

4 stages of acute radiation sickness?

1. prodromal phase
2. latent period
3. manifest illness
4. recovery stage

9

Dose of Gy/rads exposure for Acute radiation sickness: CNS, GI, hematopoietic?

CNS - 15 Gy (1500 rads)
GI - 6 Gy (600 rads)
Hematopoietic - 1 Gy (100 rads)

10

2 variables in radiation dose estimation?

emesis
time to lymphopenia

11

Americium - source of radiation

smoke detectors

12

Technetium - source of radiation

medical imaging