Imaging Science
Question Bank
Course Introduction
Imaging Science explores the principles, techniques, and applications of capturing, processing, and analyzing images across various scientific and technological domains. The course covers topics such as image formation, sensing technologies, signal and image processing, and representation methods. Students will investigate key imaging modalities including optical, X-ray, and magnetic resonance imaging, along with digital image analysis, enhancement, and visualization techniques. The curriculum emphasizes both the theoretical foundation and practical experience, preparing students for careers or research in fields such as medical imaging, remote sensing, machine vision, and multimedia.
Recommended Textbook
Radiographic Imaging and Exposure 5th Edition by Terri
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10 Chapters
621 Verified Questions
621 Flashcards
Source URL: https://quizplus.com/study-set/2258 Page 2
L. Fauber
Chapter 1: Radiation and Its Discovery
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42 Verified Questions
42 Flashcards
Source URL: https://quizplus.com/quiz/44855
Sample Questions
Q1) The electrical energy applied to an x-ray tube will be transformed to:
A) heat.
B) light.
C) x-rays.
D) A and B.
E) A and C.
Answer: E
Q2) X-rays can:
A) penetrate the human body.
B) be absorbed in the human body.
C) change direction in the human body.
D) A and B only.
E) all of the above.
Answer: E
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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66 Verified Questions
66 Flashcards
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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 positive side of the x-ray tube is the:
A) anode.
B) cathode.
C) window.
D) stream of electrons.
Answer: A
Q3) When making an exposure,which of the following does not occur when just the rotor,or prep button,is activated?
A) The anode begins to rotate.
B) Voltage is applied across the tube.
C) Current is applied to the filament.
D) A space charge is created.
Answer: B
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4
Chapter 3: Image Formation and Radiographic Quality
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68 Verified Questions
68 Flashcards
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Sample Questions
Q1) The Compton interaction can occur within all diagnostic x-ray energies.
A)True
B)False
Answer: True
Q2) An unwanted image on a radiograph is:
A) excessive image contrast.
B) the result of overexposure.
C) an artifact.
D) none of the above.
Answer: C
Q3) When the x-ray photon travels completely through the part,that activity is called:
A) acceleration.
B) attenuation.
C) transmission.
D) absorption.
Answer: C
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Page 5
Chapter 4: Digital Imaging
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101 Verified Questions
101 Flashcards
Source URL: https://quizplus.com/quiz/44858
Sample Questions
Q1) If the matrix is increased for a given FOV:
A) spatial resolution is increased.
B) spatial resolution is decreased.
C) spatial resolution is not affected.
Q2) Increasing the number of line pairs per millimeter resolved in the imaging system results in:
A) higher spatial frequency.
B) lower spatial frequency.
C) increased spatial resolution.
D) decreased spatial resolution.
E) A and C.
F) B and D.
Q3) In the CR reader unit,the IP is scanned with a(n):
A) PMT.
B) electron gun.
C) helium-neon laser beam.
D) PSP.
Q4) With an FPD,electrical charges from each DEL are read out separately.
A)True
B)False
Page 6
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Chapter 5: Film-Screen Imaging
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69 Verified Questions
69 Flashcards
Source URL: https://quizplus.com/quiz/44859
Sample Questions
Q1) Which of the following is a device designed to produce consistent step-wedge densities by eliminating the variability of the x-ray unit?
A) Densitometer
B) Penetrometer
C) Sensitometer
D) Chemical processor
Q2) Increasing the thickness of the intensifying screen phosphor layer:
A) increases speed, increases recorded detail, and increases patient dose.
B) decreases speed, increases recorded detail, and decreases patient dose.
C) increases speed, decreases recorded detail, and increases patient dose.
D) increases speed, decreases recorded detail, and decreases patient dose.
Q3) In film-screen imaging,___________ is the study of the relationship between the intensity of radiation exposure to a film and the amount of blackness produced after processing (density)?
A) densitometry
B) penetrometry
C) sensitometry
D) chemical processing
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Chapter 6: Exposure Technique Factors
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67 Verified Questions
67 Flashcards
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Sample Questions
Q1) The radiographic grid is located:
A) inside the x-ray tube.
B) between the tube and patient.
C) between the patient and the IR.
D) beneath the IR.
Q2) A high kVp results in:
A) less absorption and more transmission in anatomic tissues.
B) less variation in the x-ray intensities exiting the patient.
C) increase interactions from Compton scattering.
D) low-contrast image.
E) all of the above.
Q3) If the first radiograph of a foot is done using 4 mAs at 40 in,and a second radiograph is done using 50 in,how much mAs should be used to maintain exposure to the IR?
A) 1 mAs
B) 2 mAs
C) 6 mAs
D) 12 mAs
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Chapter 7: Scatter Control
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55 Verified Questions
55 Flashcards
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Sample Questions
Q1) As collimation decreases,exposure to the IR increases.
A)True
B)False
Q2) 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
Q3) Decreasing collimation results in:
A) a smaller field size.
B) a larger field size.
C) decreased patient dose.
D) less scatter production.
Q4) The larger the x-ray beam field size,the _________ the amount of scatter radiation produced.
A) greater
B) lesser
Q5) An adult's knee measuring 14 cm should be radiographed without a grid.
A)True
B)False
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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) Newer x-ray units may keep you from making an exposure if you've selected the table Bucky on the control panel but there's no IR in the table Bucky.
A)True
B)False
Q2) Which of the following is a system that allows the radiographer to select a particular button on the control panel that represents an anatomic area and displays a preprogrammed set of exposure factors?
A) mAs readout
B) Anatomically programmed technique
C) Automatic exposure control
D) Phototiming
Q3) The most common cause for repeating images done with film-screen and AEC is inaccurate:
A) kVp selection.
B) backup mAs selection.
C) centering.
D) alignment of the tube and image receptor.
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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 digital imaging system,changing from 40 in SID to 72 in SID would result in _____________ brightness and ____________ contrast.
A) no change in; no change in B) decreased; increased
C) no change in; decreased
D) decreased; decreased
Q2) Using a Carestream digital imaging system,if an image's EI number is 1800 while the optimal range ends at 1200,this means that the IR was ______________ and the exposure to the IR needs to be ___________________.
A) underexposed; doubled
B) underexposed; increased by a factor of four
C) overexposed; halved
D) overexposed; reduced by a factor of four
Q3) The amount of luminance (light emission)of a display monitor is the: A) density.
B) contrast.
C) SID.
D) brightness.
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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) Increasing the mA is the way to correct a fluoroscopic image that has:
A) noise.
B) pincushion appearance.
C) vignetting.
D) magnification.
Q2) The x-ray beam used with a digital fluoroscopic unit uses ___________ mA and a ______________ beam.
A) low; constant
B) high; constant
C) low; pulsed
D) high; pulsed
Q3) The process that the exit radiation from the anatomic area of interest interacts with the input phosphor for conversion to visible light,which are converted to electrons by a photocathode,then focused by electrostatic focusing lenses,and accelerated toward an anode to strike the output phosphor is:
A) fluoroscopy.
B) image intensification.
C) deadman switch.
D) radiographic mode.
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Page 12