Test Bank For Radiation Protection in Medical
Radiography | Questions and Answers | 2026
Update | Final Revision Sheet
• Radiation protection -✓✓Effective measures employed by radiation workers to
safeguard patients, personnel, and the general public from unnecessary exposure to
ionizing radiation defines:
• BERT -✓✓Which of the following is a method that can be used to answer
patients' questions about the amount of radiation received from a radiographic
procedure?
• As low as reasonably achievable (ALARA) -✓✓The term optimization for
radiation protection (ORP) is synonymous with which of the following?
• A reduction in patient radiation dose -✓✓Monitoring and reporting of patient
dose for CT and interventional procedures can lead to:
• Exposure -✓✓The amount of ionization produced in the air when ionizing
radiation is present is known as:
• Diagnostic efficacy -✓✓The degree to which the diagnostic study accurately
reveals the presence or absence of disease in the patient while adhering to radiation
safety guidelines defines which of the following terms?
• 1⁄1000 of a sievert -✓✓The millisievert (mSv) is equal to:
• 1 and 2 only -✓✓An effective radiation safety program requires a firm
commitment to radiation safety by:
1. Facilities providing imaging services
2. Radiation workers
3. Patients
• Higher effective dose than would an adult, but the image produced will appear to
be of acceptable quality -✓✓If a child receives a dose of radiation in a CT scan
,where adult protocols are used, the child, because of being smaller in size, will
receive a:
• 1, 2, and 3 -✓✓The amount of radiation actually received by a patient from a
diagnostic x-ray procedure may be indicated in terms such as:
1. Entrance skin exposure (ESE), which includes skin and glandular dose
2. Bone marrow dose
3. Gonadal dose
• Ionization -✓✓Which of the following processes is the foundation for imaging of
the interaction of x-rays with human tissue?
• It was extremely difficult to measure the amounts of radiation people received. -
✓✓Why are the long-term effects, such as an increased incidence of cancer in the
exposed population living near Japan's Fukushima Daiichi Nuclear Plant, unable to
be accurately determined?
• 2.3 mSv -✓✓According to the most recent available data from 2016, what is the
radiation dose from natural background radiation attributed to exposure from radon
and thoron?
• B. Radioactive elements in the crust of the Earth and in the human body -
✓✓Which of the following are natural sources of ionizing radiation?
A. Medical x-radiation and cosmic radiation
B. Radioactive elements in the crust of the Earth and in the human body
C. Radioactive elements in the human body and a diagnostic x-ray machine
D. Radioactive fallout and environs of atomic energy plants
• B. A substantial decrease within a few days in the number of lymphocytes or
white blood cells that are the body's primary defense against disease. -✓✓An
equivalent dose as low as 250 mSv delivered to the whole body may cause which
of the following within a few days?
A. An increase in the number of lymphocytes in the circulating blood.
B. A substantial decrease within a few days in the number of lymphocytes or white
blood cells that are the body's primary defense against disease.
, C. A drop immediately to zero in the lymphocyte count. D. A large increase in the
number of platelets.
• C. It is not received all at once but instead is delivered over a period of years at
changing dose rates. -✓✓How is actual radiation dose to the global population
from atmospheric fallout from nuclear weapons testing received?
A. It is received all at once within a short period of time after such a test.
B. It is received in large quantities within a period of 2 years after such a test.
C. It is not received all at once but instead is delivered over a period of years at
changing dose rates.
D. No fallout from such testing is ever received.
• D. 5.5 mSv per year -✓✓As of 2016, which of the following is the total average
annual radiation equivalent dose from medical, human-made, and natural
radiation?
A. 1.5 mSv per year
B. 2.3 mSv per year
C. 3.1 mSv per year
D. 5.5 mSv per year
• B. 2 only -✓✓The Russian liquidators who worked during 1986 and 1987 at the
Chernobyl power complex demonstrated a statistically significant rise in the
number of:
1. Breast cancer cases
2. Leukemia cases
3. Prostate cancer cases
• D. Increase in the incidence of thyroid cancer in children and adolescents -
✓✓Which of the following is recognized as the main adverse health effect from the
1986 Chernobyl nuclear power accident?
A. Increase in the incidence of leukemia in adults
B. Increase in the incidence of leukemia in children
C. Increase in the incidence of thyroid cancer in adults D. Increase in the incidence
of thyroid cancer in children and adolescents
Radiography | Questions and Answers | 2026
Update | Final Revision Sheet
• Radiation protection -✓✓Effective measures employed by radiation workers to
safeguard patients, personnel, and the general public from unnecessary exposure to
ionizing radiation defines:
• BERT -✓✓Which of the following is a method that can be used to answer
patients' questions about the amount of radiation received from a radiographic
procedure?
• As low as reasonably achievable (ALARA) -✓✓The term optimization for
radiation protection (ORP) is synonymous with which of the following?
• A reduction in patient radiation dose -✓✓Monitoring and reporting of patient
dose for CT and interventional procedures can lead to:
• Exposure -✓✓The amount of ionization produced in the air when ionizing
radiation is present is known as:
• Diagnostic efficacy -✓✓The degree to which the diagnostic study accurately
reveals the presence or absence of disease in the patient while adhering to radiation
safety guidelines defines which of the following terms?
• 1⁄1000 of a sievert -✓✓The millisievert (mSv) is equal to:
• 1 and 2 only -✓✓An effective radiation safety program requires a firm
commitment to radiation safety by:
1. Facilities providing imaging services
2. Radiation workers
3. Patients
• Higher effective dose than would an adult, but the image produced will appear to
be of acceptable quality -✓✓If a child receives a dose of radiation in a CT scan
,where adult protocols are used, the child, because of being smaller in size, will
receive a:
• 1, 2, and 3 -✓✓The amount of radiation actually received by a patient from a
diagnostic x-ray procedure may be indicated in terms such as:
1. Entrance skin exposure (ESE), which includes skin and glandular dose
2. Bone marrow dose
3. Gonadal dose
• Ionization -✓✓Which of the following processes is the foundation for imaging of
the interaction of x-rays with human tissue?
• It was extremely difficult to measure the amounts of radiation people received. -
✓✓Why are the long-term effects, such as an increased incidence of cancer in the
exposed population living near Japan's Fukushima Daiichi Nuclear Plant, unable to
be accurately determined?
• 2.3 mSv -✓✓According to the most recent available data from 2016, what is the
radiation dose from natural background radiation attributed to exposure from radon
and thoron?
• B. Radioactive elements in the crust of the Earth and in the human body -
✓✓Which of the following are natural sources of ionizing radiation?
A. Medical x-radiation and cosmic radiation
B. Radioactive elements in the crust of the Earth and in the human body
C. Radioactive elements in the human body and a diagnostic x-ray machine
D. Radioactive fallout and environs of atomic energy plants
• B. A substantial decrease within a few days in the number of lymphocytes or
white blood cells that are the body's primary defense against disease. -✓✓An
equivalent dose as low as 250 mSv delivered to the whole body may cause which
of the following within a few days?
A. An increase in the number of lymphocytes in the circulating blood.
B. A substantial decrease within a few days in the number of lymphocytes or white
blood cells that are the body's primary defense against disease.
, C. A drop immediately to zero in the lymphocyte count. D. A large increase in the
number of platelets.
• C. It is not received all at once but instead is delivered over a period of years at
changing dose rates. -✓✓How is actual radiation dose to the global population
from atmospheric fallout from nuclear weapons testing received?
A. It is received all at once within a short period of time after such a test.
B. It is received in large quantities within a period of 2 years after such a test.
C. It is not received all at once but instead is delivered over a period of years at
changing dose rates.
D. No fallout from such testing is ever received.
• D. 5.5 mSv per year -✓✓As of 2016, which of the following is the total average
annual radiation equivalent dose from medical, human-made, and natural
radiation?
A. 1.5 mSv per year
B. 2.3 mSv per year
C. 3.1 mSv per year
D. 5.5 mSv per year
• B. 2 only -✓✓The Russian liquidators who worked during 1986 and 1987 at the
Chernobyl power complex demonstrated a statistically significant rise in the
number of:
1. Breast cancer cases
2. Leukemia cases
3. Prostate cancer cases
• D. Increase in the incidence of thyroid cancer in children and adolescents -
✓✓Which of the following is recognized as the main adverse health effect from the
1986 Chernobyl nuclear power accident?
A. Increase in the incidence of leukemia in adults
B. Increase in the incidence of leukemia in children
C. Increase in the incidence of thyroid cancer in adults D. Increase in the incidence
of thyroid cancer in children and adolescents
