Radiation Protection Final Exam
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Some consequences of ionization in human cells include:
1. Creation of unstable atoms
2. Production of free electrons
3. Creation of reactive free radicals capable of producing substances poisonous to the cell -
CORRECT ANSWER 1, 2, and 3
Which of the following is a special form of radiation that is capable of creating electrically charged
particles by removing orbital electrons from the atom of the material with which it interacts?
A. Ionizing radiation
B. Nonionizing radiation
C. Subatomic radiation
D. Ultrasonic radiation - CORRECT ANSWER A.
Patients who have an understanding of the medical benefits of an imaging procedure because they
received factual information about the study before having the examination are more likely to: -
CORRECT ANSWER Overcome any radiation phobia and be willing to assume a small risk of
possible biologic damage
The millisievert (mSv) is equal to _____ of 1 sievert. - CORRECT ANSWER 1/1000
The advantages of the BERT method are:
1. It does not imply radiation risk; it is simply a means for comparison.
2. It emphasizes that radiation is an innate part of our environment.
,3. The answer given interms of BERT is easy for the patient to comprehend. - CORRECT ANSWER
1, 2, and 3
If a patient asks a radiographer a question about the potential risk of radiation exposure associated
with a specific x-ray procedure, the radiographer should: - CORRECT ANSWER Use his or
her intelligence and knowledge to answer the question honestly and provide a suitable example that
compares the amount of radiation received from the procedure in question with natural background
radiation received over a given period of time
Occupational and non-occupational doses will remain well below maximum allowable levels when: -
CORRECT ANSWER Radiographers and radiologists keep exposure as low as reasonably
achievable
When an imaging procedure is justified in terms of medical necessity, diagnostic efficacy is achieved
when optimal-quality images, revealing the presence or absence of disease, are obtained with: -
CORRECT ANSWER Minimal radiation exposure
Effective radiation protection measures take into consideration which of the following?
1. Both human and environmental physical determinants
2. Technical elements
3. Procedural factors - CORRECT ANSWER 1, 2, and 3
To implement an effective radiation safety program in a facility that provides imaging services, the
employer must provide all of the following except - CORRECT ANSWER X-ray equipment
that can produce only very low kilovoltage and very high milliamperage
Electromagnetic radiation can travel through space in the form of a wave but can interact with matter
as a particle of energy. This dual nature is referred to as: - CORRECT ANSWER Wave-particle
duality
,Terrestrial radiation includes which of the following sources? - CORRECT ANSWER Long-
lived radioactive elements, such as uranium-238, radium-226, and thorium-232, that are present in
variable quantities in the crust of the earth
Cosmic radiation occurs in which two forms? - CORRECT ANSWER Solar and galactic
Through which of the following routes can radon enter houses?
1. Crawl spaces underliving areas
2. Floor drains andsump pumps
3. Porous cement block foundations - CORRECT ANSWER 1, 2, and 3
When exposed to high radon levels in the home, which of the following groups of people have the
highest risk of developing lung cancer? - CORRECT ANSWER Smokers
Which of the following is considered by the EPA to be the second leading cause of lung cancer in the
United States? - CORRECT ANSWER Radon exposure
Which of thefollowing are forms of electromagnetic radiation?
1. Microwaves
2. Visible light
3. X-rays - CORRECT ANSWER 1, 2, and 3
The amount of energy transferred to electrons by ionizing radiation is the basis of the concept of -
CORRECT ANSWER Radiation dose
, In the electromagnetic spectrum, higher frequencies are associated with _____ wavelengths and
_____ energies. - CORRECT ANSWER shorter; higher
The ALARA principle can be achieved by:
A. Radiation exposure levels remain low
B. Patients are shielded during exams
C. Technologists work to reduce repeat rates
D. All the above can ensure that the ALARA principle is followed. - CORRECT ANSWER D
As radiologic technologists, we are required to comply with legal radiation protection responsibilities
as well as: - CORRECT ANSWER The ARRT Code of Ethics
Coherent scattering is most likely to occur ____________, even though some of this unmodified
scattering occurs throughout the diagnostic range and may result in small amounts of radiographic
fog. - CORRECT ANSWER below 10 keV
Which of the following is not a type of interaction between x-radiation and biologic matter? -
CORRECT ANSWER Bremsstrahlung
The symbol Z indicates the: - CORRECT ANSWER Atomic number of an atom
In photoelectric absorption, in order to dislodge an inner-shell electron from its atomic orbit, the
incoming x-ray photon must be able to transfer a quantity of energy: - CORRECT ANSWER
As large as or larger than the amount of energy that binds the electron in its orbit
Which of the following terms refers to the radiation that occurs when an electron "falls down" from an
outer orbit to fill a vacancy in an inner orbit of the parent atom? - CORRECT ANSWER
Characteristic radiation
Which of the following is not another term for coherent scattering? - CORRECT ANSWER
Characteristic
UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Some consequences of ionization in human cells include:
1. Creation of unstable atoms
2. Production of free electrons
3. Creation of reactive free radicals capable of producing substances poisonous to the cell -
CORRECT ANSWER 1, 2, and 3
Which of the following is a special form of radiation that is capable of creating electrically charged
particles by removing orbital electrons from the atom of the material with which it interacts?
A. Ionizing radiation
B. Nonionizing radiation
C. Subatomic radiation
D. Ultrasonic radiation - CORRECT ANSWER A.
Patients who have an understanding of the medical benefits of an imaging procedure because they
received factual information about the study before having the examination are more likely to: -
CORRECT ANSWER Overcome any radiation phobia and be willing to assume a small risk of
possible biologic damage
The millisievert (mSv) is equal to _____ of 1 sievert. - CORRECT ANSWER 1/1000
The advantages of the BERT method are:
1. It does not imply radiation risk; it is simply a means for comparison.
2. It emphasizes that radiation is an innate part of our environment.
,3. The answer given interms of BERT is easy for the patient to comprehend. - CORRECT ANSWER
1, 2, and 3
If a patient asks a radiographer a question about the potential risk of radiation exposure associated
with a specific x-ray procedure, the radiographer should: - CORRECT ANSWER Use his or
her intelligence and knowledge to answer the question honestly and provide a suitable example that
compares the amount of radiation received from the procedure in question with natural background
radiation received over a given period of time
Occupational and non-occupational doses will remain well below maximum allowable levels when: -
CORRECT ANSWER Radiographers and radiologists keep exposure as low as reasonably
achievable
When an imaging procedure is justified in terms of medical necessity, diagnostic efficacy is achieved
when optimal-quality images, revealing the presence or absence of disease, are obtained with: -
CORRECT ANSWER Minimal radiation exposure
Effective radiation protection measures take into consideration which of the following?
1. Both human and environmental physical determinants
2. Technical elements
3. Procedural factors - CORRECT ANSWER 1, 2, and 3
To implement an effective radiation safety program in a facility that provides imaging services, the
employer must provide all of the following except - CORRECT ANSWER X-ray equipment
that can produce only very low kilovoltage and very high milliamperage
Electromagnetic radiation can travel through space in the form of a wave but can interact with matter
as a particle of energy. This dual nature is referred to as: - CORRECT ANSWER Wave-particle
duality
,Terrestrial radiation includes which of the following sources? - CORRECT ANSWER Long-
lived radioactive elements, such as uranium-238, radium-226, and thorium-232, that are present in
variable quantities in the crust of the earth
Cosmic radiation occurs in which two forms? - CORRECT ANSWER Solar and galactic
Through which of the following routes can radon enter houses?
1. Crawl spaces underliving areas
2. Floor drains andsump pumps
3. Porous cement block foundations - CORRECT ANSWER 1, 2, and 3
When exposed to high radon levels in the home, which of the following groups of people have the
highest risk of developing lung cancer? - CORRECT ANSWER Smokers
Which of the following is considered by the EPA to be the second leading cause of lung cancer in the
United States? - CORRECT ANSWER Radon exposure
Which of thefollowing are forms of electromagnetic radiation?
1. Microwaves
2. Visible light
3. X-rays - CORRECT ANSWER 1, 2, and 3
The amount of energy transferred to electrons by ionizing radiation is the basis of the concept of -
CORRECT ANSWER Radiation dose
, In the electromagnetic spectrum, higher frequencies are associated with _____ wavelengths and
_____ energies. - CORRECT ANSWER shorter; higher
The ALARA principle can be achieved by:
A. Radiation exposure levels remain low
B. Patients are shielded during exams
C. Technologists work to reduce repeat rates
D. All the above can ensure that the ALARA principle is followed. - CORRECT ANSWER D
As radiologic technologists, we are required to comply with legal radiation protection responsibilities
as well as: - CORRECT ANSWER The ARRT Code of Ethics
Coherent scattering is most likely to occur ____________, even though some of this unmodified
scattering occurs throughout the diagnostic range and may result in small amounts of radiographic
fog. - CORRECT ANSWER below 10 keV
Which of the following is not a type of interaction between x-radiation and biologic matter? -
CORRECT ANSWER Bremsstrahlung
The symbol Z indicates the: - CORRECT ANSWER Atomic number of an atom
In photoelectric absorption, in order to dislodge an inner-shell electron from its atomic orbit, the
incoming x-ray photon must be able to transfer a quantity of energy: - CORRECT ANSWER
As large as or larger than the amount of energy that binds the electron in its orbit
Which of the following terms refers to the radiation that occurs when an electron "falls down" from an
outer orbit to fill a vacancy in an inner orbit of the parent atom? - CORRECT ANSWER
Characteristic radiation
Which of the following is not another term for coherent scattering? - CORRECT ANSWER
Characteristic
