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Correct Tech > Biological Aspects Of Radiation > Flashcards

Biological Aspects Of Radiation Flashcards

1
Q

What is meant by ionizing radiation?

A

Any radiation capable of removing an orbital electron

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2
Q

How is the coulomb per kilogram (C/kg) unit determined?

A

Ionization in air

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3
Q

When radiation exposure causes hematopoietic death, what is the main reason why the person died?

A

Immune system is destroyed

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4
Q

Which of the following is the most common result of cell irradiation?

A. Cell death
B. Sterilization
C. Mutation
D. Uncontrolled growth

A

B. Sterilization

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5
Q

Which of the following is the unit of exp. dose of gamma or xrays?

A. Gray
B. Joule
C. Sievert
D. Coulomb per kilogram

A

D. Coulomb per kilogram

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6
Q

What is the equivalent dose limit for an embryo-fetus per month?

A

.5 mSv

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7
Q

Stochastic effects of radiation can be defined as:

A

Cells that survive an initial irradiation but produce a late effect

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8
Q

What is the process of cell division of somatic cells called?

A

Mitosis

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9
Q

Which of these is a measure of that rate at which energy is transferred from radiation to soft tissues?

A. Rad
B. Erg
C. LET
D. RBE

A

C. LET

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10
Q

NRCP #116 deals with

A

Occupational limits

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11
Q

Annual occupational dose limit is

A

50 mSv

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12
Q

NCRP #116 recommends that an individual’s rem bank can not exceed his/her age

A

True

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13
Q

Personally monitoring shall be performed if the person has a chance of exceeding:

A

5.0 mSv a year

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14
Q

What does genetically significant dose mean?

A

Estimated dose received by the population

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15
Q

Which of the following is the unit of absorbed radiation dose?

A. Gray
B. Joule
C. Kilogram
D. Sievert

A

A. Gray

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16
Q

According to 21 CFR, which of the following is/are true concerning fluoroscopic equipment manufactured after June 10, 2006?

A. Air kerma rate must be updated every second
B. Cumulative air kerma must be updated every 5 seconds
C. Irradiation time must be updated every 6 seconds
D. All of the above

A

D. All of the above

17
Q

What percentage of the total amount of radiation to the general population comes from background radiation?

A

50%

18
Q

NCRP #102 states that a warning sign must be visible in areas where the exposure rate exceeds

A

.05mSv/hr

19
Q

The somatic effects of radiation refer to which of the following?

A. Exposure to trunk
B. Exposure to reproductive organs
C. Whole body
D. Nervous system

A

C. Whole body

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