Biological Aspects Of Radiation Flashcards
What is meant by ionizing radiation?
Any radiation capable of removing an orbital electron
How is the coulomb per kilogram (C/kg) unit determined?
Ionization in air
When radiation exposure causes hematopoietic death, what is the main reason why the person died?
Immune system is destroyed
Which of the following is the most common result of cell irradiation?
A. Cell death
B. Sterilization
C. Mutation
D. Uncontrolled growth
B. Sterilization
Which of the following is the unit of exp. dose of gamma or xrays?
A. Gray
B. Joule
C. Sievert
D. Coulomb per kilogram
D. Coulomb per kilogram
What is the equivalent dose limit for an embryo-fetus per month?
.5 mSv
Stochastic effects of radiation can be defined as:
Cells that survive an initial irradiation but produce a late effect
What is the process of cell division of somatic cells called?
Mitosis
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
C. LET
NRCP #116 deals with
Occupational limits
Annual occupational dose limit is
50 mSv
NCRP #116 recommends that an individual’s rem bank can not exceed his/her age
True
Personally monitoring shall be performed if the person has a chance of exceeding:
5.0 mSv a year
What does genetically significant dose mean?
Estimated dose received by the population
Which of the following is the unit of absorbed radiation dose?
A. Gray
B. Joule
C. Kilogram
D. Sievert
A. Gray
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
D. All of the above
What percentage of the total amount of radiation to the general population comes from background radiation?
50%
NCRP #102 states that a warning sign must be visible in areas where the exposure rate exceeds
.05mSv/hr
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
C. Whole body
