Radiologic Science Solved
Exam Questions
Course Introduction
Radiologic Science is an interdisciplinary course that explores the principles, techniques, and applications of medical imaging used to diagnose and treat diseases. The curriculum covers foundational topics such as anatomy and physiology, radiation physics, patient care, image production, and radiographic procedures. Students gain an understanding of radiologic equipment operation, radiation safety protocols, and image evaluation criteria. The course also emphasizes professional ethics, communication skills, and the critical role of radiologic technologists in the healthcare team, preparing students for clinical practice and further specialization within the field of diagnostic imaging.
Recommended Textbook
Radiographic Imaging and Exposure 5th Edition by Terri L. Fauber
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10 Chapters
621 Verified Questions
621 Flashcards
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Chapter 1: Radiation and Its Discovery
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Sample Questions
Q1) Which of the following terms could be defined as the instantaneous production of light only during an interaction between a type of energy and some element or compound?
A) Phosphorescence
B) Afterglow
C) Glowing
D) Fluorescence
Answer: D
Q2) Chemical changes may occur as a result of exposure to ionizing radiation.
A)True
B)False
Answer: True
Q3) X-rays used in radiography have wavelengths ranging from 0.1 to:
A) 0.01 Å.
B) 1 Å.
C) 10 Å.
D) 100 Å.
Answer: B
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Chapter 2: The X-Ray Beam
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Sample Questions
Q1) The x-ray beam produced with 120 kVp will consist primarily of x-rays produced by bremsstrahlung interactions.
A)True
B)False
Answer: True
Q2) The wide range of energies in the x-ray beam is known as the:
A) homoenergetic spectrum.
B) x-ray emission spectrum.
C) gamma ray emission spectrum.
D) x-ray transmission spectrum.
Answer: B
Q3) The part of the x-ray tube that is connected to the target and causes it to turn is the: A) filament.
B) rotor.
C) stator.
D) base.
Answer: B
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Chapter 3: Image Formation and Radiographic Quality
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Sample Questions
Q1) Compton interactions are more likely to occur in soft tissue as compared to bone.
A)True
B)False
Answer: False
Q2) Beam attenuation __________ with a higher-energy x-ray beam.
A) increases
B) decreases
C) stays the same
Answer: B
Q3) The _____ image occurs first on the image receptor,and the _____ image occurs following proper image development/processing.
A) manifest, latent
B) invisible, latent
C) visible, manifest
D) latent, manifest
Answer: D
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Chapter 4: Digital Imaging
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Sample Questions
Q1) DR imaging systems briefly store the electrical charge in the:
A) ADC.
B) TFT.
C) CRT.
D) DQE.
Q2) LCD stands for:
A) liquid cathode display.
B) liquid crystal display.
C) logarithmically created digitization.
D) layered components diagram.
Q3) How often the analog signal is digitized is the:
A) sampling frequency.
B) sampling pitch.
C) pixel frequency.
D) pixel pitch.
Q4) Compared with film-screen detectors:
A) digital IRs have a much narrower dynamic range.
B) digital IRs have a much wider dynamic range.
C) digital IRs have no dynamic range.
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Chapter 5: Film-Screen Imaging
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Sample Questions
Q1) Which of the following renders a film very sensitive to underexposure or overexposure,which may necessitate image retakes?
A) Limited dynamic range
B) Limited signal-to-noise ratio
C) Increased dynamic range
D) Need for high-resolution monitors
Q2) How much of the x-ray beam do rare earth phosphor intensifying screens absorb?
A) 5%
B) 30%
C) 60%
D) 90%
Q3) What are the physical imperfections in the emulsion layer of radiographic film called?
A) Rare earth phosphors
B) Calcium tungstate
C) Sensitivity specks
D) Silver halide crystals
Q4) The greater the film speed,the ______ sensitive it is.
A) more
B) less
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Chapter 6: Exposure Technique Factors
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Sample Questions
Q1) Which of the following is not affected by a change in SID?
A) Recorded detail
B) Image contrast
C) Amount of radiation reaching the IR
D) Magnification
Q2) The distance between the radiation source and the image receptor is the:
A) magnification factor.
B) SID.
C) OID.
D) SOD.
Q3) Shape distortion can be created by:
A) off-centering the central ray.
B) angling the central ray.
C) increasing the SID.
D) A and B only.
Q4) What effect does the level of mAs have on image brightness when using digital image receptors?
A) Increases image brightness.
B) Decreases image brightness.
C) Does not directly affect image brightness.
Page 8
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Chapter 7: Scatter Control
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Sample Questions
Q1) What is the result of imaging a thicker part or patient?
A) More Compton interactions
B) Decreased scatter
C) Increased radiographic contrast
D) Decreased fog
Q2) The amount of mAs required with a grid divided by the amount of mAs needed without a grid is the calculation that determines the:
1)Grid ratio
2)Grid conversion factor
3)Bucky factor
A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3
Q3) The unrestricted primary beam produces a(n)_________ area of exposure.
A) round
B) oval
C) square
D) rectangular
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Page 9
Chapter 8: Exposure Technique Selection
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Sample Questions
Q1) What is the purpose of setting a backup time/mAs?
A) To prevent excessive exposure of the patient
B) To make certain the contrast is acceptable if the chosen kVp is too low
C) To make certain the density is acceptable if the patient moves
D) To prevent the selection of the wrong detector
Q2) What are calipers used for?
A) To measure the mA
B) To select the kVp
C) To select focal spot size
D) To measure the part
Q3) Which of the following is/are true regarding the development of an effective technique chart?
A) The radiographic equipment must be operating properly.
B) A good-quality control program is in place.
C) The equipment must be from the same manufacturer.
D) A and B.
E) A and C.
Q4) Technique charts are still needed when using AEC.
A)True
B)False
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Chapter 9: Image Evaluation
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Sample Questions
Q1) Using an Agfa digital imaging system,if an image's exposure indicator is 2.3 lgM while the optimal range begins at 2.6 lgM,this means that the IR was ______________ and the exposure to the IR needs to be ___________________ .
A) underexposed; increased by 30%
B) underexposed; increased by a factor of two
C) overexposed; decreased by 30%
D) overexposed; decreased by a factor of two
Q2) Using a Konica digital imaging system,if an image's S number is 600 while the optimal range ends at 300,this means that the IR was ______________ and the exposure to the IR needs to be ___________________.
A) underexposed; doubled
B) under exposed; halved
C) overexposed; doubled
D) overexposed; halved
Q3) The amount of overall blackness on the processed image is the:
A) density.
B) contrast.
C) SID.
D) brightness.
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Page 11
Chapter 10: Dynamic Imaging: Fluoroscopy
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Sample Questions
Q1) Typical CRT type television monitors have:
A) 300 lines.
B) 450 lines.
C) 525 lines.
D) 875 lines.
Q2) The gain related to the decrease in size from the input to the output phosphor that increases the light intensities is the:
A) brightness gain.
B) flux.
C) minification gain.
D) conversion factor.
Q3) The TFTs control the current to each pixel and switch it on or off by causing the liquid crystals to twist or untwist in which type of monitor?
A) CRT monitor
B) LCD monitor
C) Plasma monitor
D) Smartphone monitor
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