Radiologic Science Study Guide Questions
Course Introduction
Radiologic Science is a comprehensive course that explores the fundamental principles and practices of medical imaging technologies. Students will study the physics of radiation, anatomy as visualized by radiographic techniques, patient positioning, and the proper operation of imaging equipment. The course also covers safety protocols, radiation protection, image evaluation, and the ethical and legal responsibilities of radiologic technologists. Emphasis is placed on developing both technical skills and professional conduct necessary for delivering quality patient care within a clinical setting.
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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Page 2
Chapter 1: Radiation and Its Discovery
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42 Verified Questions
42 Flashcards
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Sample Questions
Q1) In the formula c = lv,v represents:
A) frequency.
B) the speed of light. C) wavelength.
D) kinetic energy.
Answer: A
Q2) In the formula c = lv,c represents:
A) frequency.
B) the speed of light.
C) wavelength.
D) kinetic energy.
Answer: B
Q3) The speed of light is:
A) 3 × 108 meters per second
B) 3 × 108 miles per second
C) 186,000 miles per second
D) A and B
E) A and C
Answer: E
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Page 3
Chapter 2: The X-Ray Beam
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66 Verified Questions
66 Flashcards
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Sample Questions
Q1) In order to produce x-rays,electrons must be:
A) suddenly decelerated.
B) accelerated.
C) liberated from the cathode filament.
D) all of the above.
Answer: D
Q2) In order to produce 12 mAs,how long should the exposure time be when using 600 mA?
A) 0.002 s
B) 0.02 s
C) 0.2 s
D) 2 s
Answer: B
Q3) What is the name of the device in a rotating anode x-ray tube that turns the rotor?
A) Stator
B) Rotor
C) Focusing cup
D) Rheostat
Answer: A
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Page 4
Chapter 3: Image Formation and Radiographic Quality
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68 Verified Questions
68 Flashcards
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Sample Questions
Q1) As seen on the radiographic image,scatter radiation:
A) decreases the visibility of anatomic structures.
B) increases the visibility of anatomic structures.
C) has no effect on the visibility of anatomic structures.
D) increases image contrast.
Answer: A
Q2) Subject contrast is dependent on the:
A) energy of the x-ray beam.
B) quantity of radiation used.
C) absorption characteristics of the tissue being imaged.
D) A and B.
E) A and C.
Answer: E
Q3) With radiographic imaging,anatomic tissues,such as bone,that absorb most of the radiation result in that area of the image being:
A) more blurred.
B) sharper.
C) darker (more density).
D) lighter (less density).
Answer: D
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Chapter 4: Digital Imaging
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101 Verified Questions
101 Flashcards
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Sample Questions
Q1) With CR,a higher sampling pitch results in _____________ pixel size and ____________ spatial resolution.
A) increased; increased
B) increased; decreased
C) decreased; increased
D) decreased; decreased
Q2) The distracting area of increased brightness surrounding a collimated image can be removed from the displayed digital image by:
A) masking.
B) shuttering.
C) electronic collimation.
D) all of the above.
Q3) A value that reflects the difference between the desired or target exposure to the IR and the actual exposure to the IR is the:
A) EI (Carestream).
B) lgM (Agfa).
C) S number (Fuji).
D) deviation index (DI).
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6
Chapter 5: Film-Screen Imaging
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69 Verified Questions
69 Flashcards
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Sample Questions
Q1) What is achieved when the color of light emitted by an intensifying screen matches the color of light a film responds to?
A) Chromatic spectrometry
B) Orthochromatic sensitivity
C) Panchromatic matching
D) Spectral matching
Q2) What is the effect of the presence of a dye in the phosphor layer of the intensifying screen?
A) Decreased speed, increased recorded detail, and increased patient dose
B) Decreased speed, increased recorded detail, and decreased patient dose
C) Increased speed, decreased recorded detail, and increased patient dose
D) Increased speed, decreased recorded detail, and decreased patient dose
Q3) Which layer of the intensifying screen is closest to the film and protects the phosphor?
A) Protective layer
B) Base
C) Phosphor layer
D) Emulsion
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7
Chapter 6: Exposure Technique Factors
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67 Flashcards
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Sample Questions
Q1) The relationship between distance and x-ray beam intensity,specifically that the intensity of the x-ray beam is inversely proportional to the square of the distance from the source,is the:
A) direct square law.
B) Gurney-Mott theory.
C) inverse square law.
D) magnification law.
Q2) In order to see the effect of changing kVp,a greater change is needed when operating at low kVp as compared to high kVp.
A)True
B)False
Q3) As compared to a patient with a 24 cm thick abdomen,imaging a patient with a 20 cm thick abdomen will result in _____________ scatter being produced and ______________ image contrast.
A) less; lower
B) more; lower
C) less; higher
D) more; higher
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8
Chapter 7: Scatter Control
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Sample Questions
Q1) Grid ratio can be expressed mathematically as:
A) thickness of lead strips divided by distance between them.
B) height of lead strips divided by distance between them.
C) height of lead strips divided by thickness of lead strips.
D) length of lead strips divided by distance between them.
Q2) Which of the following statements is true?
A) If the height of the lead strips increases and the space between the grid strips decreases, the grid will be more effective at scatter removal.
B) If the height of the lead strip decreases and the space between the grid strips increases, the grid will be more effective at removing scatter radiation.
C) A high ratio grid removes little scatter.
D) A grid decreases scatter production.
Q3) The only reason a grid should be used is to increase radiographic contrast.
A)True
B)False
Q4) The larger the x-ray beam field size,the _________ the amount of scatter radiation produced.
A) greater
B) lesser
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Chapter 8: Exposure Technique Selection
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57 Verified Questions
57 Flashcards
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Sample Questions
Q1) If the detector is directly exposed to the primary beam during a film-screen study,the area of interest will appear:
A) overexposed.
B) underexposed.
C) correctly exposed.
D) to have high contrast.
Q2) When using film-screen,what happens when an outside detector is selected for an AP thoracic spine?
A) The spine will have insufficient contrast.
B) The spine will be too dark.
C) The spine will have excessive contrast.
D) The spine will have insufficient density.
Q3) When doing a tabletop forearm study with CR,you should:
A) use AEC.
B) set manual technique.
C) A and B.
Q4) Optimal kVp values for each anatomic area have been established by law.
A)True
B)False
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Chapter 9: Image Evaluation
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25 Verified Questions
25 Flashcards
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Sample Questions
Q1) When using a film-screen imaging system,changing from small to large focal spot size would result in _____________ density and ____________ recorded detail.
A) no change in; no change in
B) decreased; increased
C) no change in; decreased
D) decreased; decreased
Q2) A digital image with higher contrast may be due to:
1)Decreased kVp
2)Increased grid ratio
3)Decreased patient thickness
A) 1 and 2 only.
B) 1 and 3 only.
C) 2 and 3 only.
D) 1, 2, and 3.
Q3) An area of decreased brightness visualized on a computer monitor has ________density on a film image.
A) increased
B) decreased
C) no
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Chapter 10: Dynamic Imaging: Fluoroscopy
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71 Verified Questions
71 Flashcards
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Sample Questions
Q1) The analog to digital converter:
A) makes the electrical signal understandable to the computer.
B) determines the contrast resolution of the system.
C) determines the image matrix.
D) all of the above.
Q2) When the electron beam in the camera travels back and forth across,from the top to bottom,it is moving in a ___________ pattern.
A) sweep
B) brush
C) raster
D) rooster
Q3) A typical high-resolution monitor will have:
A) 825 lines.
B) 1024 lines.
C) 1872 lines.
D) 2034 lines.
Q4) The ABC can be slow in responding,seen as a brief delay in the brightness adjustment.
A)True
B)False
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