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RADT1200 chapter 9 test #4 Questions and
Correct Answers
What are some long term effects of ionizing radiation? Ans:
Cateracts
Leukemia
Genetic mutaiton
What is epidemiology? Ans: A science that deals with the
incidence, distribution and control of disease in a population
Incidence of disease within groups of people is called? Ans:
Epidemiology
What are some of the studies that epidemiology includes? Ans:
Risks of radiation induced cancer
Epidemiology is used to formulate what? Ans: Dose response
estimates
Dose response curves are used to establish? Ans: Relationships
between the dose of radiation received (dose) and the biological
effects (response)
Dose received is plotted on the? Ans: Horizontal axis
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, 2 | Page
The biologic effects are plotted on the? Ans: Vertical axis
What are the types of curves? Ans: The curves are either linear or
nonlinear and either threshold or no threshold
What is threshold? Ans: It is below a certain radiation level or
dose
Below threshold their is no biologic affects ______? Ans: Observed
Nonthreshold is any radiation dose that will produce a? Ans:
Biologic affect
Nonthreshold believes that no radiaiton dose is
absolutely________? Ans: Safe
The smallest dose of ionizing radiation will cause a? Ans: Biologic
affect
What is BEIR? Ans: It is a committee on the biological effects of
ionizing radiation 1980
BEIR of 1980 states that The majority of stochastic somatic effects
(such as cancer) and as the type of energy used in diagnostic
radiology, appear to follow a? Ans: Linear quadratic non-
threshold curve
© 2025 All rights reserved
RADT1200 chapter 9 test #4 Questions and
Correct Answers
What are some long term effects of ionizing radiation? Ans:
Cateracts
Leukemia
Genetic mutaiton
What is epidemiology? Ans: A science that deals with the
incidence, distribution and control of disease in a population
Incidence of disease within groups of people is called? Ans:
Epidemiology
What are some of the studies that epidemiology includes? Ans:
Risks of radiation induced cancer
Epidemiology is used to formulate what? Ans: Dose response
estimates
Dose response curves are used to establish? Ans: Relationships
between the dose of radiation received (dose) and the biological
effects (response)
Dose received is plotted on the? Ans: Horizontal axis
© 2025 All rights reserved
, 2 | Page
The biologic effects are plotted on the? Ans: Vertical axis
What are the types of curves? Ans: The curves are either linear or
nonlinear and either threshold or no threshold
What is threshold? Ans: It is below a certain radiation level or
dose
Below threshold their is no biologic affects ______? Ans: Observed
Nonthreshold is any radiation dose that will produce a? Ans:
Biologic affect
Nonthreshold believes that no radiaiton dose is
absolutely________? Ans: Safe
The smallest dose of ionizing radiation will cause a? Ans: Biologic
affect
What is BEIR? Ans: It is a committee on the biological effects of
ionizing radiation 1980
BEIR of 1980 states that The majority of stochastic somatic effects
(such as cancer) and as the type of energy used in diagnostic
radiology, appear to follow a? Ans: Linear quadratic non-
threshold curve
© 2025 All rights reserved
