Diagnostic Imaging Practice Exam
Course Introduction
Diagnostic Imaging is a comprehensive course that introduces students to the principles and techniques of medical imaging used for the diagnosis and management of diseases. The course covers the physics and instrumentation of key imaging modalities, including X-ray, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, and nuclear medicine. Emphasis is placed on understanding image formation, interpretation, safety protocols, and the clinical applications of each modality. Students will develop the skills to correlate imaging findings with pathophysiological processes and learn the importance of selecting appropriate imaging studies for various clinical scenarios.
Recommended Textbook
Radiation Protection in Medical Radiography 7th Edition by Mary Alice
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14 Chapters
340 Verified Questions
340 Flashcards
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Chapter 1: Introduction to Radiation Protection
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Sample Questions
Q1) Diagnostic efficacy includes:
1)imaging procedure or practice justified by the referring physician.
2)minimal radiation exposure used.
3)optimal image(s) produced.
4)presence or absence of disease revealed.
A)1,2,and 3 only
B)1,2,and 4 only
C)2,3,and 4 only
D)1,2,3,and 4
Answer: D
Q2) The basic principles of radiation protection include which of the following?
1)Time
2)Distance
3)Shielding
A)1 only
B)2 only
C)3 only
D)1,2,and 3
Answer: D
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Chapter 2: Radiation: Types, sources, and Doses Received
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Sample Questions
Q1) The FDA presently considers the risk of radiation exposure to the U.S.population from color television monitors to be:
A)substantial.
B)moderate.
C)very slight.
D)negligible.
Answer: D
Q2) As of 2006,when spread over the inhabitants of the United States,fallout from nuclear weapons tests and other environmental sources along with other human-made radiations contributed:
A)only a small portion of 0.1 mSv to the equivalent dose of each person.
B)a dose of approximately 1.5 mSv to the equivalent dose of each person.
C)a dose of approximately 3.2 mSv to the equivalent dose of each person.
D)a dose of approximately 6.3 mSv to the equivalent dose of each person.
Answer: A
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Chapter 3: Interaction of X-Radiation With Matter
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Sample Questions
Q1) Which of the following particles is considered to be a form of antimatter?
A)Electron
B)Positron
C)X-ray photon
D)Scattered x-ray photon
Answer: B
Q2) Which of the following are by-products of photoelectric absorption?
A)Photoelectron and Compton scattered electron
B)Low-energy scattered x-ray photon and characteristic photon
C)Low-energy scattered x-ray photon and Compton scattered electron
D)Photoelectron and characteristic photon
Answer: D
Q3) Which two interactions between x-radiation and matter may result in the production of small-angle scatter?
A)Photoelectric absorption and Compton scattering
B)Coherent scattering and Compton scattering
C)Photoelectric absorption and pair production
D)Coherent scattering and pair production
Answer: B
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Chapter 4: Radiation Quantities and Units
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Sample Questions
Q1) Of the following numerical choices,which is the effective atomic number (Zeff) of soft tissue?
A)15
B)13.8
C)7.4
D)5.9
Q2) Which of the following units are not SI units?
1)Roentgens
2)Coulombs per kilogram,grays,Sieverts
3)Rads and rems
A)1 only
B)2 only
C)3 only
D)1 and 3 only
Q3) Which of the following rem values equals 35 mSv?
A)0.35 rem
B)3.5 rem
C)35 rem
D)350 rem
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Page 6
Chapter 5: Radiation Monitoring
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Sample Questions
Q1) In diagnostic imaging,the ______________ of the optically stimulated luminescence dosimeter makes it ideal for monitoring employees working in low-radiation environments and for pregnant workers.
A)decreased sensitivity
B)increased sensitivity
C)lack of sensitivity
D)unaffected sensitivity
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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Page 7
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) Adenine bonds only with: A)cytosine. B)guanine.
C)hydrogen. D)thymine.
Q3) The cell components that contain the centrioles are the:
A)centrosomes.
B)Golgi apparatus and mitochondria.
C)lysosomes.
D)ribosomes.
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Chapter 7: Molecular and Cellular Radiation Biology
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Sample Questions
Q1) Which of the following tissues contain cells that do not divide?
1)Epithelial tissue
2)Muscle tissue
3)Nervous tissue in an adult
A)1 and 2 only
B)1 and 3 only
C)2 and 3 only
D)1,2,and 3
Q2) As LET increases,the ability of ionizing radiation to cause biologic effects:
A)also generally increases until it reaches a maximal value.
B)decreases considerably.
C)decreases slightly.
D)remains constant,not increasing or decreasing.
Q3) Which of the following curves illustrates the radiation sensitivity of a particular type of cell?
A)Epidemiologic data curve
B)Extrapolation curve
C)Dose-response curve
D)Survival curve
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Page 9
Chapter 8: Early Deterministic Radiation Effects on Organ Systems
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Sample Questions
Q1) Atrophy refers to:
A)aging of the skin from radiation exposure.
B)shrinkage of organs and tissues after a high radiation dose is received.
C)necrosis of the hypodermis from radiation exposure.
D)wrinkling of the skin from 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) Revised atomic bomb data for Hiroshima and Nagasaki suggest that radiation-induced leukemias and solid tumors occurring in the survivors may be attributed to exposure to which of the following?
A)X-rays
B)Gamma radiation
C)Neutrons
D)Various nonionizing radiations
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Page 10
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) Radiation-induced cataracts in humans follow a ______ dose-response relationship.
A)nonlinear,nonthreshold
B)linear,nonthreshold
C)linear,threshold
D)nonlinear,threshold
Q3) Mutations in genes and DNA that occur at random as natural phenomena are called:
A)deterministic mutations.
B)sporadic mutations.
C)spontaneous mutations.
D)stochastic mutations.
Page 11
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Chapter 10: Dose Limits for Exposure to Ionizing Radiation
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Sample Questions
Q1) Which of the following terms means "random in nature"?
A)Deterministic
B)Epidemiologic
C)Nonstochastic
D)Stochastic
Q2) A radiation safety officer in a health care facility must have sufficient authority,organizational freedom,and management prerogative to:
1)identify radiation safety problems.
2)initiate,recommend,or provide corrective action.
3)stop unsafe operations involving by-product material.
4)verify implementation of corrective actions.
A)1,2,and 3 only
B)1,3,and 4 only
C)2,3,and 4 only
D)1,2,3,and 4
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) What is the purpose of radiographic beam filtration?
A)To decrease beam hardness,thereby reducing patient skin dose and the dose to superficial tissues
B)To increase beam hardness,thereby reducing patient skin dose and the dose to superficial tissues
C)To eliminate short wavelength radiation to reduce the radiation received by the patient's skin and superficial tissues
D)To increase beam hardness,thereby increasing patient skin dose with only a slight increase to superficial tissues
Q2) 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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13
Chapter 12: Management of Patient Radiation Dose During Diagnostic X-Ray Procedures
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Sample Questions
Q1) Which of the following are considered to be benefits of an aggressive repeat analysis program?
1)Increased awareness among staff and student radiographers of the need to produce optimal quality recorded images
2)Radiographers generally become more careful in producing their images because they are aware that the images are being reviewed
3)When the repeat analysis program identifies problems or concerns,in-service education programs covering these specific topics may be designed for imaging personnel
A)1 only
B)2 only
C)3 only
D)1,2,and 3
Q2) 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.
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Chapter 13: Management of Imaging Personnel Radiation
Dose During Diagnostic X-Ray Procedures
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Sample Questions
Q1) Which part(s) of a diagnostic x-ray unit should a radiographer avoid touching while a radiographic exposure is in progress?
A)Control panel
B)Exposure switch
C)Kilovoltage control on the control panel
D)Tube housing,collimator,and high-tension cables
Q2) When the time spent in a higher radiation area is reduced or limited,occupational exposure:
A)is also reduced.
B)is increased slightly.
C)remains the same.
D)is increased considerably.
Q3) Whenever scattered radiation decreases,the radiographer's exposure:
A)decreases.
B)increases slightly.
C)increases considerably.
D)remains the same.
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Page 15
Chapter 14: Radioisotopes and Radiation Protection
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Sample Questions
Q1) Considering the design of the medical imaging suites listed below,which suite presents the most unique additional radiation safety problems?
A)Computer radiography suite
B)PET and CT imaging suite
C)Digital mammography suite
D)Digital fluoroscopy suite
Q2) 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.
Q3) The actual long-term health effects of a "dirty bomb" are likely to be:
A)catastrophic.
B)maximal.
C)minimal.
D)nonexistent.
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