Radiation Protection in Medical Imaging Practice Questions
Course Introduction
This course covers the fundamental principles and practices of radiation protection in the context of medical imaging. Emphasizing the importance of minimizing radiation exposure to patients, healthcare workers, and the public, the course explores sources of ionizing radiation, dose measurement, and biological effects of radiation. Students learn protocols for safe operation of imaging equipment such as X-ray, CT, and fluoroscopy, as well as regulatory requirements and international guidelines. The course also includes practical strategies for optimizing image quality while ensuring radiation doses are kept as low as reasonably achievable (ALARA), fostering a safety culture in clinical environments.
Recommended Textbook
Radiation Protection in Medical Radiography 7th Edition by Mary Sherer
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14 Chapters
339 Verified Questions
339 Flashcards
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Chapter 1: Introduction to Radiation Protection
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25 Verified Questions
25 Flashcards
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Sample Questions
Q1) Radiation phobia can be greatly reduced by explaining the diagnostic radiation dose to the patient by using the:
A) ALARA method.
B) BERT method.
C) ORP method.
D) TRACE method.
Answer: B
Q2) The TRACE program consists of:
1)rewriting regulatory standards.
2)formulating new policies and procedures to promote radiation safety and the implementation of patient and community awareness.
3)technologic enhancements.
A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3
Answer: C
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Chapter 2: Radiation: Types, Sources, and Doses Received
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25 Verified Questions
25 Flashcards
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Sample Questions
Q1) Which of the following is considered by the EPA to be the second leading cause of lung cancer in the United States?
A) Annual PA and lateral chest radiographs
B) Cosmic ray exposure
C) Radon exposure
D) A fluoroscopic examination of the upper gastrointestinal tract
Answer: C
Q2) In the electromagnetic spectrum,higher frequencies are associated with:
A) longer wavelengths and lower energies.
B) longer wavelengths and higher energies.
C) shorter wavelengths and lower energies.
D) shorter wavelengths and higher energies.
Answer: D
Q3) A flight on a typical commercial airliner results in an equivalent dose rate of:
A) 0.001 to 0.005 mSv/hr.
B) 0.005 to 0.01 mSv/hr.
C) 0.02 to 0.04 mSv/hr.
D) 0.05 to 0.09 mSv/hr.
Answer: B
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Page 4
Chapter 3: Interaction of X-Radiation With Matter
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25 Verified Questions
25 Flashcards
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Sample Questions
Q1) The symbol Z indicates:
A) atomic number of an atom.
B) atomic weight of an atom.
C) fluorescent yield.
D) the number of vacancies in an atomic shell.
Answer: A
Q2) What is the effective atomic number of compact bone?
A) 5.9
B) 7.4
C) 7.6
D) 13.8
Answer: D
Q3) Which of the following terms refers to the radiation that occurs when an electron drops down from an outer orbit to fill a vacancy in an inner orbit of the parent atom?
A) Characteristic radiation
B) Bremsstrahlung
C) Photoelectric radiation
D) Primary radiation
Answer: A
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Page 5
Chapter 4: Radiation Quantities and Units
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24 Flashcards
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Sample Questions
Q1) Which of the following effects must be measured to determine the total amount of radiation exposure in a specific volume of dry air under standard conditions of pressure and temperature (760 mm Hg or 1 atmosphere at sea level and 22° C)?
A) Biologic damage
B) Cellular activity
C) Energy absorption
D) Quantity of ionization
Q2) Which of the following statements is true?
A) 100 rem = 1 centisievert
B) 10 rem = 1 centisievert
C) 1 rem = 1 centisievert
D) 0.1 rem = 1 centisievert
Q3) If 400 people receive an average effective dose of 0.25 Sv,what is the collective effective dose?
A) 100 person-Sieverts
B) 200 person-Sieverts
C) 800 person-Sieverts
D) 1600 person-Sieverts
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Chapter 5: Radiation Monitoring
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Sample Questions
Q1) Of the following personnel monitoring devices,which device could be used to provide immediate exposure readout for a radiation worker working in a cardiac catheterization laboratory?
A) Film badge dosimeter
B) Optically stimulated luminescence (OSL) dosimeter
C) Pocket ionization chamber
D) Thermoluminescent dosimeter (TLD)
Q2) Three different filters are incorporated into the detector packet of the optically stimulated luminescence (OSL) dosimeter.These filters are respectively made of:
1)aluminum.
2)copper.
3)molybdenum.
4)rhenium tungsten.
5)tin.
A) 1, 2, and 3 only
B) 1, 2, and 4 only
C) 1, 2, and 5 only
D) 2, 4, and 5 only
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Chapter 6: Overview of Cell Biology
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Sample Questions
Q1) Which of the following causes an increase in cellular activity that in turn causes biochemical reactions to occur more rapidly to meet the needs of the cell?
A) Acetic acids
B) Enzymes
C) Hormones
D) Nucleic acids
Q2) In general,which of the following can human cells do?
1)Move,grow,react,and protect themselves
2)Repair damage and regulate life processes
3)Reproduce
A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3
Q3) How many different amino acids are involved in protein synthesis?
A) 7
B) 15
C) 22
D) 39
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Page 8
Chapter 7: Molecular and Cellular Radiation Biology
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25 Verified Questions
25 Flashcards
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Sample Questions
Q1) The radiosensitivity of ova:
A) remains constant throughout the lifetime of the germ cell.
B) varies considerably throughout the lifetime of the germ cell.
C) varies slightly throughout the lifetime of the germ cell.
D) is insignificant because the germ cell is not radiosensitive.
Q2) A biologic reaction is produced by 4 Gyt of a test radiation.It takes 16 Gyt of 250-kVp x-rays to produce the same biologic reaction.What is the relative biologic effectiveness (RBE) of the test radiation?
A) 2
B) 4
C) 8
D) 12
Q3) Which of the following means the loss or change of a nitrogenous base in the DNA chain?
A) Aneuploidy
B) Bleb
C) Free radical
D) Mutation
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9
Chapter 8: Early Deterministic Radiation Effects on Organ Systems
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Sample Questions
Q1) Studies of radiation therapy patients who received orthovoltage radiation therapy treatments provide:
A) no evidence of skin damage caused by radiation exposure.
B) minimal evidence of skin damage caused by radiation exposure.
C) a moderate amount of evidence of skin damage caused by radiation exposure.
D) significant evidence of skin damage caused by radiation exposure.
Q2) The prodromal stage of acute radiation syndrome is also referred to as the:
A) initial stage.
B) latent period.
C) manifest illness period.
D) recovery period.
Q3) In 1898,after sustaining severe burns attributed to radiation exposure,this Boston dentist began investigating the hazards of radiation exposure and became the first known advocate of radiation protection:
A) Marie Curie
B) Clarence Madison Dally
C) Wilhelm Conrad Roentgen
D) William Herbert Rollins
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Chapter 9: Late Deterministic and Stochastic Radiation
Effects on Organ Systems
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Sample Questions
Q1) Radiation dose-response curves can be used to predict the risk of ______________ in human populations that have been exposed to low levels of ionizing radiation.
A) cataract formation
B) genetic effects
C) malignancy
D) spontaneous abortions
Q2) Existing data on radiation-induced genetic effects in humans :
A) prove conclusively that radiation causes major genetic effects.
B) prove conclusively that radiation causes only minor genetic effects.
C) are still inconclusive.
D) prove conclusively that radiation does not cause genetic effects.
Q3) Studies of postpartum patients treated with ionizing radiation for relief of mastitis are a group of individuals in whom the results of radiation exposure to healthy breast tissue indicate that radiation:
A) can cause breast cancer.
B) cannot cause breast cancer.
C) can cause breast enlargement.
D) can cause breast shrinkage.
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Chapter 10: Dose Limits for Exposure to Ionizing Radiation
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Sample Questions
Q1) The annual occupational effective dose (EfD) limit does not include:
1)personal medical radiation exposure from an imaging procedure.
2)natural background radiation exposure.
3)radiation exposure received on the job.
A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3
Q2) The responsibility for maintaining radiation monitoring records for all personnel and for providing counseling for individuals who receive monitor readings in excess of allowable limits belongs to the:
A) director of human resources of a health care facility.
B) designated radiation safety officer of a health care facility.
C) hospital administrator.
D) radiologic technologist in charge of quality control.
Q3) The effective dose (EfD) limiting system supersedes:
A) all Occupational Safety and Health Administration (OSHA) regulations.
B) all Nuclear Regulatory Commission (NRC) regulations.
C) the maximum permissible dose (MPD) system.
D) the Consumer-Patient Radiation Health and Safety Act of 1981.
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Chapter 11: Equipment Design for Radiation Protection
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Sample Questions
Q1) Depending on the area of the body being examined with a fluoroscopic image intensification system,for adult patients,a range of ______ kVp is generally used.
A) 30 to 60
B) 60 to 75
C) 75 to 110
D) 110 to 140
Q2) Which of the following materials is commonly used in the tabletop of a radiographic examination table to make the tabletop as radiolucent as possible so that it will absorb only a minimal amount of radiation,thereby reducing the patient's radiation dose?
A) Carbon fiber material
B) Formica
C) Granite
D) Slate
Q3) Which of the following is not an x-ray beam limitation device?
A) Aperture diaphragm
B) Collimator
C) Filter
D) Extension cylinder
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13
Chapter 12: Management of Patient Radiation Dose During Diagnostic X-Ray Procedures
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Sample Questions
Q1) During a radiographic examination,which of the following combinations of technical exposure factors and filtration reduce patient radiation dose?
A) Lower kVp, higher mAs, decreased filtration
B) Higher kVp, lower mAs, increased filtration
C) Higher kVp, higher mAs, decreased filtration
D) Lower kVp, lower mAs, increased filtration
Q2) Of the following radiologic procedures,which is(are) considered nonessential?
A) A chest x-ray on scheduled admission to the hospital
B) Lumbar spine x-rays as part of a preemployment physical examination
C) Whole-body multislice computed tomography (CT) screening
D) All of the above
Q3) Which of the following is frequently a problem in diagnostic pediatric radiography?
A) Lack of availability of appropriate pediatric immobilization devices
B) Lack of cooperation of parents or guardian
C) Lack of appropriate individuals to assist in holding a pediatric patient during an exposure
D) Patient motion
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Page 14
Chapter 13: Management of Imaging Personnel Radiation
Dose During Diagnostic X-Ray Procedures
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Sample Questions
Q1) If the peak energy of the x-ray beam is 100 kVp,a protective lead apron must be the equivalent to at least which of the following measures?
A) 0.25-mm thickness of lead
B) 0.5-mm thickness of lead
C) 1.0-mm thickness of lead
D) 1.5-mm thickness of lead
Q2) _______________ is the radiation output weighted time that the unit is actually delivering radiation during the week.
A) Control designation
B) Occupancy
C) Use factor
D) Workload
Q3) Which of the following adjustments in technical exposure factors decreases the production of scattered radiation?
A) Decrease kVp and increase mAs in compensation
B) Decrease kVp and decrease mAs
C) Increase kVp and decrease mAs in compensation
D) Increase kVp and increase mAs
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Chapter 14: Radioisotopes and Radiation Protection
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15 Verified Questions
15 Flashcards
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Sample Questions
Q1) Iodine-125 (¹² I) in the form of titanium-encapsulated cylindrical seeds has been used quite extensively within the past decade to give a tumoricidal radiation equivalent dose for:
A) malignant brain tumors.
B) malignant breast tumors.
C) malignant lung tumors.
D) prostate cancers that are confined within the prostate gland.
Q2) During a radiation emergency,the dose limit for individuals engaging in lifesaving activities is:
A) 50 mSv per event.
B) 100 mSv per event.
C) 250 mSv per event.
D) 500 mSv per event.
Q3) Each Fluorine-18 (¹ F) nuclear transformation by positron decay yields two highly penetrating _________ photons.
A) 250-keV
B) 472-keV
C) 511-kev
D) 777-keV
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Page 16