Rad protection ch 7 part 2

1.

1 point

In the 1920's and 30's, radiation protection came in the form of _____________

Blood test

TLD

Film dosimeter

OSL

2.

1 point

Doses as small as ______ can decrease lymphocytes

50 rads

10 rads

25 rads

100 rads

3.

1 point

What is the LD 50/30 for humans?

350 rads

850 rads

150 rads

500 rads

4.

1 point

The most radiosensitive cell in the female:

spermatogonia stem cell

oogonia

RBC

lymphocyte

5.

1 point

Reduction of neutrophils can be seen ______ after exposure, followed by recovery within 2 months

one week

6 months

a few days

4 weeks

6.

1 point

Reduction of lymphocytes is seen within ________, followed by recovery within a few months

a year

a few days

a week

4 weeks

7.

1 point

The first blood cells affected by radiation are the:

Basophils

Platelets

Lymphocytes

Red blood cells

8.

1 point

Following a testicular dose in excess of 10 rads, the male should refrain from any procreation efforts for _________

2 months

3 months

4 months

1 month

9.

1 point

Platelets and RBC require a dose of ______________ to suppress them

10 rad

50 rad

greater than 50 rad

25 rad

10.

1 point

In the diagnostic range, we do not see doses that can cause sterility, but we can see possible chromosomal damage.

True

False

11.

1 point

Stochastic effects are generally associated with a _____________ health problem

Chronic immediate

Acute delayed

Chronic delayed

Acute immediate

12.

1 point

Skin effects follow a _____________ DRR

linear threshold

non-linear threshold

non-linear non-threshold

linear non-threshold

13.

1 point

Relative risk rates range from 1 to 10 with 1 representing _________

Very little risk

No risk

Very high risk

Some risk

14.

1 point

Loss of layers of skin

Tissue atrophy

Desquamation

Epilation

Erythema

15.

1 point

A gonadal dose as low as 10 rads can

suppress menstrual cycle

reduce sperm production

genetic mutation

erythema

16.

1 point

Uncertain or not-guaranteed; random

Stochastic

Non-stochastic

17.

1 point

Shrinkage of the organ or tissue due to cell death

Epilation

Desquamation

Erythema

Tissue atrophy

18.

1 point

The risk estimate which describes the risk in terms of the number of cases observed over what would be naturally expected in a population

Relative risk

Excess risk

Transient risk

Absolute risk

19.

1 point

A dose of ______ can suppress neutrophils

10 rad

25 rad

greater than 50 rad

50 rad

20.

1 point

The most radiosensitive cell in the male:

lymphocyte

spermatogonia stem cell

oogonia

erythrocyte

21.

1 point

Examples of stochastic effects include:

Hematologic effects

Radiation induced cancer

Erythema

Effects from diagnostic imaging

Genetic effects

CNS syndrome

22.

1 point

The number of people in the exposed population is compared with those not exposed who serve as a ___________

Relative group

Benchmark group

Probable group

Excess group

23.

1 point

Risk estimate used when the dose to which a population has been exposed is not precisely known

Absolute risk

Relative risk

Probable risk

Excess risk

24.

1 point

Acute radiation lethality follows a ________________ DRR.

non-linear non-threshold

non-linear threshold

linear threshold

linear non-threshold

25.

1 point

Loss of hair

Tissue atrophy

Epilation

Erythema

Desquamation

26.

1 point

The maximum whole body single dose exposure with survival ever reported is:

500 rads

350 rads

850 rads

1000 rads

27.

1 point

_________ = observed cases – expected cases

Excess risk

Transient risk

Probable risk

Relative risk

28.

1 point

A gonadal dose of _______ can cause permanent sterility

500 rads

1000 rads

700 rads

200 rads

29.

1 point

The first observed response to radiation exposure

Erythema

Epilation

Urticaria

Desquamation

30.

1 point

A high dose, or _______, can cause permanent alopecia

500 rad

700 rad

400 rad

300 rad

31.

1 point

Types of risk estimates are:

Benchmark

Relative

Excess

Observed

Absolute

Probable

32.

1 point

What are included in the hemopoietic system?

Osteocytes

Spleen

Liver

Bone marrow

Adrenal glands

Thyroid

Lymph nodes

Thymus

Circulating blood

33.

1 point

A single dose of ____________ can result in mild to moderate erythema

300 to 700 rad

400 to 1000 rad

200 rad

500 to 600 rad

34.

1 point

With stochastic effects, low dose levels decrease the chance of a response.

True

False

35.

1 point

Time between exposure and death increases as the whole body dose decreases

True

False

36.

1 point

What is the absolute risk of radiation induced cancer?

10 cases/million/Rad/yr

20 cases/20 million/rad/year

6 cases/million/rad/year

10 cases/10 million/10 rad/year

37.

1 point

A gonadal dose of _______ can cause temporary sterility lasting up to 1 year

700 rads

500 rads

200 rads

1000 rads

38.

1 point

Certain or guaranteed; predictable

Non-stochastic

Stochastic

39.

1 point

Reduction of platelets and RBCs may not be seen for up to ___________ and recovery could take 6 months to 1 year

6 months

4 weeks

a few days

one week

40.

1 point

Another name for sunburn:

Alopecia

Erythema

Desquamation

Epilation

41.

1 point

Risk estimate which predicts a specific number of excess cancers that will occur as a result of radiation exposure

Excess risk

Transient risk

Relative risk

Absolute risk

42.

1 point

__________ are the least sensitive and injury may not appear to them for several weeks

Lymphocytes

Platelets

Red blood cells

Basophils

43.

1 point

The principal cause of death from CNS syndrome is:

Accumulation of fluid in the brain

Blood infection

Melanoma

Severe damage to GI tract lining

44.

1 point

500/600 rad will cause erythema in ____ of those who receive that dose

60%

75%

25%

50%

45.

1 point

An effect in which the probability of occurrence increases with increasing dose but the severity of the effect is not dependent upon the intensity of the dose

Stochastic

Non-stochastic

46.

1 point

A moderate dose, or _______, can cause temporary alopecia

400 rad

700 rad

300 rad

500 rad

47.

1 point

Damage to cells depends on:

Sensitivity of cell

Life span of cell

Function of cell

Size of cell

48.

1 point

Signifies the whole body radiation dose that is fatal to 50% of those exposed within 30 days

LD 50/50

LD .50/30

LD 30/50

LD 50/30

49.

1 point

___________ = observed cases/expected cases

Probable risk

Absolute risk

Excess risk

Relative risk