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Complete Test Bank Radiation Protection in Medical Radiography 9th Edition
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Complete Test Bank Radiation Protection in Medical Radiography 9th Edition
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Complete Test Bank RadiationProtection in Medical Radiography
9th Edition
1. Which of the following types of radiation has the highest potential for causing
cellular damage?
A) Alpha particles
B) X-rays
C) Beta particles
D) Gamma rays
Answer: A) Alpha particles
2. In radiation protection, what is the purpose of a dosimeter?
A) To measure radiation output from an X-ray machine
B) To track patient exposure to radiation
C) To measure the radiation dose received by personnel
D) To regulate the machine’s exposure settings
Answer: C) To measure the radiation dose received by personnel
3. Which regulatory agency is responsible for enforcing standards related to
radiation exposure in the workplace?
A) Nuclear Regulatory Commission (NRC)
B) Environmental Protection Agency (EPA)
C) Food and Drug Administration (FDA)
D) Occupational Safety and Health Administration (OSHA)
,Answer: D) Occupational Safety and Health Administration (OSHA)
4. The ALARA principle in radiography stands for:
A) As Low As Really Applicable
B) As Low As Reasonably Achievable
C) Always Lowered After Radiation Accumulation
D) As Little As Radiation Allowed
Answer: B) As Low As Reasonably Achievable5. Which of the following interactions
contributes most to patient dose during diagnostic radiography?
A) Compton scattering
B) Coherent scattering
C) Photoelectric absorption
D) Pair production
Answer: C) Photoelectric absorption
6. Which type of shielding is most effective for protecting patients from scatter
radiation?
A) Lead apron
B) Aluminum filter
C) Thyroid collar
D) Collimator
Answer: A) Lead apron
7. What is the primary purpose of filtration in diagnostic radiography?
A) To increase image sharpness
,B) To reduce patient exposure
C) To allow more X-rays to reach the image receptor
D) To increase contrast on the radiograph
Answer: B) To reduce patient exposure
8. Which of the following is an advantage of using digital radiography over traditional
film radiography?
A) Higher radiation dose for better image quality
B) Reduced radiation dose to the patient
C) Increased need for retakes
D) Improved penetration of X-rays
Answer: B) Reduced radiation dose to the patient
9. The primary beam in diagnostic radiography refers to:
A) Scattered radiation within the examination room
B) Radiation that passes directly from the tube to the patient
C) Radiation that bounces off surfaces and reaches the patient
D) Radiation that passes through a filter before reaching the patient
Answer: B) Radiation that passes directly from the tube to the patient
10. What is the recommended occupational dose limit for radiology personnel set by
the NCRP?
A) 10 mSv per year
B) 50 mSv per year
C) 100 mSv per year
D) 5 mSv per year
, Answer: B) 50 mSv per year
11. Which of the following best describes the term "genetic effects" in radiation
protection?
A) Radiation effects that are observed immediately after exposure
B) Radiation effects that impact future generations
C) Somatic effects that occur in the exposed individual
D) The effects on tissues exposed to radiation directly
Answer: B) Radiation effects that impact future generations
12. Which modality uses the highest doses of ionizing radiation?
A) Mammography
B) Dental radiography
C) Computed tomography (CT)
D) MRI
Answer: C) Computed tomography (CT)
13. Which concept explains why radiation workers should not exceed annual dose
limits?
A) Linear-no-threshold hypothesis
B) Stochastic effect principle
C) Inverse square law
D) Cumulative exposure theory
Answer: A) Linear-no-threshold hypothesis
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