Health Physics in Medicine
Test Questions
Course Introduction
Health Physics in Medicine explores the principles and applications of radiation protection in medical settings, focusing on the safe use of ionizing and non-ionizing radiation for diagnosis and therapy. The course covers topics such as radiation interactions with matter, measurement and monitoring of radiation, biological effects of radiation exposure, regulatory standards, and safety protocols in medical imaging and radiation therapy. Emphasis is placed on risk assessment, dose optimization, shielding design, and the responsibilities of health physicists in ensuring patient and staff safety while maximizing the benefits of medical radiation technologies.
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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Page 2
Chapter 1: Introduction to Radiation Protection
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Sample Questions
Q1) 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:
A) assume a small risk of biologic damage but not overcome any radiation phobia they may have.
B) cancel their scheduled procedure because they are not willing to assume a small risk of biologic damage.
C) overcome any radiation phobia but not assume a small risk of possible biologic damage.
D) overcome any radiation phobia and be willing to assume a small risk of possible biologic damage.
Answer: D
Q2) The millisievert (mSv) is equal to:
A) 1/10 of a sievert.
B) 1/100 of a sievert.
C) 1/1000 of a sievert.
D) 1/10,000 of a sievert.
Answer: C
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3
Chapter 2: Radiation: Types, Sources, and Doses Received
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Sample Questions
Q1) What was the total average annual effective dose from natural background and human-made radiations combined as of 2006?
A) 2.0 mSv
B) 3.2 mSv
C) 6.3 mSv
D) 9.6 mSv
Answer: C
Q2) Electromagnetic radiation can travel through space in the form of a wave but can also interact with matter as a particle of energy.This dual nature is referred to as:
A) wave attenuation capability.
B) wave-particle interchange ability.
C) wave-particle duality.
D) wave-particle phenomena.
Answer: C
Q3) Of the two sources of ionizing radiation listed below,which source remains fairly constant from year to year?
A) Human-made
B) Natural
Answer: B
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Page 4
Chapter 3: Interaction of X-Radiation With Matter
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Sample Questions
Q1) What is the effective atomic number of compact bone?
A) 5.9
B) 7.4
C) 7.6
D) 13.8
Answer: D
Q2) What is the term for the number of x-rays emitted per inner-shell vacancy during the process of photoelectric absorption?
A) Characteristic absorption
B) Classical gain
C) Fluorescent yield
D) Modified pair production
Answer: C
Q3) Fluorescent radiation is also known as:
A) characteristic radiation.
B) coherent scattering.
C) Compton scattering.
D) unmodified scattering.
Answer: A
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Page 5
Chapter 4: Radiation Quantities and Units
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Sample Questions
Q1) One thousand five hundred rem equals _________ Sieverts.
A) 15
B) 150
C) 1500
D) 15,000
Q2) Which of the following rem values equals 4000 mSv?
A) 4 rem
B) 40 rem
C) 400 rem
D) 4000 rem
Q3) Among physicians,cancer deaths attributed to x-ray exposure were reported as early as:
A) 1910.
B) 1930.
C) 1937.
D) 1945.
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Page 6
Chapter 5: Radiation Monitoring
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Sample Questions
Q1) Which of the following should be part of the employment record of all radiation workers?
A) A list of all fluoroscopic procedures performed daily
B) A list of all radiographic procedures performed daily
C) A record of exposure recorded by personnel dosimeters
D) A report of all procedures performed when "on call" after regular hours
Q2) An electrometer is a device that measures:
A) current.
B) electrical charge.
C) potential difference.
D) voltage.
Q3) Some of the advantages of the optically stimulated luminescence (OSL) dosimeter are:
1)can be used for up to 1 year.
2)lightweight,durable,and easy to carry.
3)integrated,self-contained,preloaded packet.
A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3
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Chapter 6: Overview of Cell Biology
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Sample Questions
Q1) A nucleotide is formed from a nitrogen-containing organic base,a ________________ molecule,and a phosphate molecule.
A) three-carbon sugar
B) five-carbon sugar
C) seven-carbon sugar
D) nine-carbon sugar
Q2) Which of the following is/are considered to be acellular tissue?
A) Bone
B) Fat
C) Muscle
D) Hair and nails
Q3) Adenine bonds only with:
A) cytosine.
B) guanine.
C) hydrogen.
D) thymine.
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Chapter 7: Molecular and Cellular Radiation Biology
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Q1) Which of the following is/are considered low-LET radiation(s)?
1)X-rays
2)Alpha particles
3)Gamma rays
A) 1 only
B) 2 only
C) 1 and 3 only
D) 2 and 3 only
Q2) One micron (mm) = __________.
A) 10-6 m
B) 10+6 m
C) 10-3 m
D) 10+3 m
Q3) Based on current data,which of the following would be considered a safe radiation dose for the gonads of both males and females?
A) 5 Gyt
B) 3 Gyt
C) 1 Gyt
D) 0 Gyt
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Page 9
Chapter 8: Early Deterministic Radiation Effects on Organ Systems
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Sample Questions
Q1) 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.
Q2) 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.
Q3) The hematopoietic form of acute radiation syndrome is also called the:
A) Auger syndrome.
B) bone marrow syndrome.
C) cerebrovascular syndrome.
D) mutational syndrome.
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Chapter 9: Late Deterministic and Stochastic Radiation
Effects on Organ Systems
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Sample Questions
Q1) In general,laboratory experiments with mice prove that cataracts may be induced with doses of ionizing radiation as low as:
A) 0.1 Gyt.
B) 0.01 Gyt.
C) 0.5 Gyt.
D) 0.05 Gyt.
Q2) Radiation-induced abnormalities are caused by unrepaired damage to:
A) all stem cells in the body.
B) DNA within ova or sperm.
C) epithelial cells.
D) somatic cells.
Q3) What is the mean value of the radiation doubling equivalent dose for humans,as determined from the children of the atomic bomb survivors of Hiroshima and Nagasaki?
A) 1.00 Sv
B) 1.56 Sv
C) 3.00 Sv
D) 5.67 Sv
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Page 11
Chapter 10: Dose Limits for Exposure to Ionizing Radiation
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Q1) Epidemiologic studies of atomic bomb survivors exposed in utero have provided conclusive evidence of a dose-dependent increase in the incidence of severe mental retardation for fetal doses greater than approximately:
A) 0.1 Sv.
B) 0.2 Sv.
C) 0.3 Sv.
D) 0.4 Sv.
Q2) ____________________ exists that low-level ionizing radiation causes a statistically significant increase in the threat of malignancy.
A) A substantial amount of conclusive proof
B) A moderate amount of conclusive proof
C) A small amount of conclusive proof
D) No conclusive proof
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) Current federal standards limit entrance skin exposure rates of general-purpose intensified fluoroscopic units to a maximum of ______________ measured at tabletop with the image intensifier entrance surface at a prescribed 30 cm above.
A) 100 mGya/min
B) 300 mGya/min
C) 500 mGya/min
D) 600 mGya/min
Q2) Computed radiography,because of its higher exposure latitude,makes grid use on the pediatric population:
A) absolutely necessary for all radiographic examinations.
B) less necessary than was previously believed.
C) necessary only for extremity examinations.
D) unnecessary for any examination.
Q3) CR imaging has greater ____________ flexibility than conventional screen-film radiography.
A) kilovoltage
B) milliamperage
C) time of exposure
D) x-ray beam collimation
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Page 13
Chapter 12: Management of Patient Radiation Dose During Diagnostic X-Ray Procedures
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Sample Questions
Q1) The radiation dose absorbed by an organ such as bone marrow:
A) can be accurately measured by a direct method.
B) cannot be measured by a direct method; it can only be estimated.
C) is negligible for all diagnostic radiography examinations. D) can only be measured to a small degree by a direct method.
Q2) In the event that a pregnant patient is inadvertently irradiated:
A) the radiographer performing the examination should perform the calculations necessary to determine fetal dose.
B) the imaging department manager should perform the calculations necessary to determine fetal dose.
C) the radiologic physicist should perform the calculations necessary to determine fetal dose.
D) the radiologist should perform the calculations necessary to determine fetal dose.
Q3) Poorly processed images on radiographic film will:
A) continue to have archival quality.
B) deteriorate over time.
C) lose only a minimal amount of archival quality over a 10-year period.
D) remain in their original condition.
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Chapter 13: Management of Imaging Personnel Radiation
Dose During Diagnostic X-Ray Procedures
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Sample Questions
Q1) Diagnostic imaging personnel receive the highest occupational exposure during which of the following procedures?
1)Fluoroscopy
2)Mobile radiography
3)Special procedures
A) 1 only
B) 2 only
C) 3 only
D) 1, 2, and 3
Q2) What is the term for the proportional amount of time during which the x-ray beam is energized or directed toward a particular barrier?
A) Occupancy factor
B) Workload factor
C) Distance factor
D) Use factor
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Page 15
Chapter 14: Radioisotopes and Radiation Protection
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Q1) During a radiation emergency,at a dose rate of ____________,emergency personnel should await specific instructions from radiation experts on how to proceed.
A) 0.1 Sv/hr
B) 0.5 Sv/hr
C) 1.0 Sv/hr
D) 5.0 Sv/hr
Q2) In __________,a neutron transforms itself into a combination of a proton and an energetic electron.
A) alpha decay
B) beta decay
C) gamma decay
D) x-ray absorption
Q3) Diagnostic techniques in nuclear medicine typically make use of ___________ radioisotopes as radioactive tracers.
A) long-lived
B) short-lived
C) very weak
D) potentially lethal
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