Introduction to Radiologic Science Exam
Questions
Course Introduction
Introduction to Radiologic Science provides students with a foundation in the principles, history, and practices of radiologic technology. This course explores the role of radiologic technologists within the healthcare system, familiarizes students with various imaging modalities (such as X-ray, CT, MRI, and ultrasound), and introduces concepts related to patient care, radiation protection, and medical ethics. Emphasis is placed on the significance of safety protocols, effective communication, and the responsibilities of the radiologic science professional, preparing students for further specialized studies in medical imaging.
Recommended Textbook
Essentials of Radiographic Physics and Imaging 2nd Edition by James Johnston
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1530 Verified Questions
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Chapter 1: Introduction to the Imaging Sciences
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Sample Questions
Q1) If a basketball goes from being stationary to a velocity of 18 m/s in 3 seconds,what is its acceleration?
A)6 N.
B)6 m/s².
C)6 m/s.
D)6 W.
Answer: B
Q2) If 240 J of work is done in 1 minute,how much power is consumed?
A)4 J.
B)4 W.
C)4 kg-m/s.
D)4 m/s.
Answer: B
Q3) Exposure,dose,and dose equivalent are
A)fundamental quantities
B)derived quantities
C)radiologic quantities
D)none of the above
Answer: C
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Page 3
Chapter 2: Structure of the Atom
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Sample Questions
Q1) If an atom has 15 electrons,which will be the outermost shell?
A)"L"
B)"M"
C)"N"
D)"O"
Answer: B
Q2) Atoms with different number of protons but the same combined number of protons and neutrons are
A)isotopes
B)isotones
C)isobars
D)isomers
Answer: C
Q3) The simplest form of the substances that form matter is the A)atomic number
B)atomic mass number
C)element
D)compound
Answer: C
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Page 4
Chapter 3: Electromagnetic and Particulate Radiation
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Sample Questions
Q1) X-rays are produced
A)from unstable atoms
B)using fast-moving electrons
C)using fast-moving atoms
D)using fast-moving metals
Answer: B
Q2) Gamma rays are produced
A)from unstable atoms
B)using fast-moving electrons
C)using fast-moving atoms
D)using fast-moving metals
Answer: A
Q3) An ion pair is
A)an electron and proton
B)a proton and neutron
C)an atom and the electron that was removed from it
D)an atom with an extra electron and an atom that is missing an electron
Answer: C
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Chapter 4: The X-Ray Circuit
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Sample Questions
Q1) Which of the following requires the greatest amount of resistance in the filament circuit?
A)50 ma.
B)100 mA.
C)600 mA.
D)1000 mA.
Q2) The device that adjusts the incoming power supplied to the x-ray circuit to maintain 220 V is the
A)circuit breaker
B)autotransformer
C)timer circuit
D)line compensator
Q3) If a conductor is curved,the greatest amount of charge will be found
A)at the beginning of the conductor
B)at the end of the conductor
C)at the area of the greatest curvature of the conductor
D)along the straightest area of the conductor
Q4) Nonmagnetic material,when interacting with a magnet,distorts the magnetic field.
A)True
B)False
Page 6
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Chapter 5: The X-Ray Tube
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Sample Questions
Q1) Using very long exposures can lead to tube damage or failure.
A)True
B)False
Q2) Many newer x-ray units do not need the radiographer to go through a warm-up procedure.
A)True
B)False
Q3) The physical area of the target where electrons strike is the effective focal spot.
A)True
B)False
Q4) Excessive heat may be transferred to the rotor bearings,resulting in
A)the anode rotating faster than it should
B)the anode rotating slower than it should
C)the anode rotating unevenly
D)all of the above
Q5) The stator is made up of electromagnets.
A)True
B)False
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Chapter 6: X-Ray Production
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Sample Questions
Q1) When 65 kVp is set on the operating console,no K-characteristic radiation is produced.
A)True
B)False
Q2) At the anode target,___ of the energy from filament electrons is lost as heat and ___ will result in x-ray production.
A)1%;99%
B)99%;1%
C)0%;100%
D)100%;0%
Q3) A discrete emission spectrum is a graphic representation of A)characteristic radiation
B)bremsstrahlung radiation
C)remnant radiation
D)A and B
E)B and C
Q4) Generally speaking,an increase in the quantity of radiation results in decreased patient dose.
A)True B)False
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Chapter 7: X-Ray Interactions With Matter
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Sample Questions
Q1) Photoelectric interactions
A)contribute significantly to patient dose
B)should be reduced as close to 0 events as possible
C)negatively affect radiographic image quality
D)all of the above
Q2) Photodisintegration interactions
A)occur very often during radiographic procedures
B)seldom occur during radiographic procedures
C)never occur during radiographic procedures
D)it depends on the procedure
Q3) Compton scattering results in
A)a Compton electron
B)a secondary electron
C)a Compton scatter photon
D)all of the above
Q4) To produce a radiographic image that represents anatomy,there must be
A)photoelectric interactions
B)transmitted photons
C)differential absorption
D)all of the above
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Chapter 8: Image Production
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Sample Questions
Q1) Scattering in the diagnostic range is due to
A)photoelectric interactions
B)absorption
C)the Compton effect
D)all of the above
Q2) Imaging a thicker part results in
A)more x-ray photons reaching the image receptor
B)fewer x-ray photons reaching the image receptor
C)no change in the number of photons reaching the image receptor
D)none of the above
Q3) Place the following image intensification steps in the correct order,from beginning to end:
I electrons are accelerated toward anode
II light energy is converted to electrons
III electrons strike phosphor and are converted to light
IV remnant radiation is converted to light
A)IV,II,I,III
B)III,II,I,IV
C)II,III,IV,I
D)I,II,IV,III
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Chapter 9: Image Quality and Characteristics
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Sample Questions
Q1) Making the digital image appear with low contrast,with many shades of gray,is done by
A)raising the window level
B)lowering the window level
C)increasing the window width (wide WW)
D)decreasing the window width (narrow WW)
Q2) The distinctness or sharpness of structural lines that make up the recorded film-screen image is
A)recorded detail
B)OID
C)contrast resolution
D)matrix resolution
Q3) Making the digital image appear with high contrast,more black and white,is done by
A)raising the window level
B)lowering the window level
C)increasing the window width (wide WW)
D)decreasing the window width (narrow WW)
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11
Chapter 10: Radiographic Exposure Technique
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Sample Questions
Q1) Increasing tube filtration
A)increases the beam energy
B)decreases radiographic contrast
C)increases radiographic contrast
D)A and B
E)A and C
Q2) Increasing kVp has a greater effect on the quality of a film-screen image than on a digital image.
A)True
B)False
Q3) If a small adult's 24-cm thick abdomen requires 20 mAs to produce the appropriate level of radiation reaching the IR,how much mAs should be used with a larger patient whose abdomen measures 32 cm?
A)5 mAs.
B)20 mAs.
C)40 mAs.
D)80 mAs.
Q4) More scatter radiation exits the patient when using higher kilovoltage.
A)True
B)False
Page 12
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Chapter 11: Scatter Control
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Sample Questions
Q1) Increasing collimation (decreasing the field size)results in
A)increased scatter production and higher contrast
B)increased scatter production and lower contrast
C)decreased scatter production and higher contrast
D)decreased scatter production and lower contrast
Q2) Which of the following is the formula used to determine grid ratio?
A)Grid ratio = distance between the lead strips/height of the lead strips.
B)Grid ratio = width of the lead strips/height of the lead strips.
C)Grid ratio = height of the lead strips/distance between the lead strips.
D)Grid ratio = height of the lead strips/width of the lead strips.
Q3) The formula to use when changing from one grid to another is
A)mAs /mAs = GCF2/GCF1
B)mAs /mAs = (GCF2)2/GCF1)2
C)mAs /mAs = GCF1/GCF2
D)mAs /mAs = (GCF1)2/GCF2)2
Q4) Linear grids are the most commonly used because
A)they are very inexpensive
B)the tube can be angled in all directions
C)the tube can be angled in the direction of the lead lines
D)all of the above
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Chapter 12: Image Receptors
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Sample Questions
Q1) The test tool to evaluate film-screen contact is the A)densitometer
B)sensitometer
C)wire mesh
D)penetrometer
Q2) This test assesses the system's ability to display images of different parts of an image with high fidelity
A)reflection
B)luminance response
C)luminance dependencies
D)resolution
Q3) The data from optical disks are stored across an array to create backups and maximize efficiency of retrieval and storage called
A)redundant array of independent disks (RAID)
B)storage area network (SAN)
C)network attached storage (NAS)
D)PACS
Q4) The latent image from the PSP plate remains in place for hours after exposure. A)True
B)False
Page 14
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Chapter 13: Exposure Technique Selection
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Sample Questions
Q1) AED and phototiming are accurate terms that can be used in place of automatic exposure control.
A)True
B)False
Q2) In imaging a child,a short exposure time is needed for an examination using AEC.The mA setting should
A)be low
B)be mid-range
C)be high
D)It doesn't matter-the AEC device will control the exposure time
Q3) Phototimer AEC devices convert the radiation to light energy.
A)True
B)False
Q4) The mAs readout is of little value because there is no need to set manual exposure factors.
A)True
B)False
Q5) Once a part has been selected using APR,the exposure factors cannot be adjusted. A)True
B)False
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Chapter 14: Image Intensified Fluoroscopy
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Sample Questions
Q1) The function of the fluoroscopic unit that maintains the overall appearance of the fluoroscopic image (contrast and density)by automatically adjusting the kilovoltage peak (kVp),milliamperage (mA),or both is
A)DQE
B)APR
C)ABC
D)AEC
Q2) The image intensifier was introduced in the A)1920s
B)1950s
C)1970s
D)1980s
Q3) This recording system uses 70-mm or 105-mm film
A)Cassette spot filming
B)Film cameras for spot filming
C)Videotape
D)None of the above
Q4) The input phosphor and photocathode form a flat surface
A)True
B)False
Page 16
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Chapter 15: Additional Equipment
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Sample Questions
Q1) Unless otherwise required,during C-arm fluoroscopic procedures the image intensifier should be located
A)beneath the patient
B)to the side of the patient
C)above the patient
Q2) AEC devices are always used for mobile radiographic imaging
A)True
B)False
Q3) To produce a thin tomographic section,there needs to be a
A)low fulcrum level
B)high fulcrum level
C)small tomographic angle
D)large tomographic angle
Q4) The most common areas scanned for bone densitometry are the
A)hip and cervical spine
B)lumbar spine and skull
C)shoulder and thoracic spine
D)hip and lumbar spine
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Chapter 16: Computed Tomography
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Sample Questions
Q1) Structures such as the breast or thyroid cannot be shielded when they are in the SFOV because an artifact would be created.
A)True
B)False
Q2) This specific area of the image is often selected to perform data analysis
A)Annotation
B)Windowing
C)Region of interest (ROI)
D)Multiplanar reformation (MPR)
Q3) The sequence of computer operations for accomplishing a specific task,such as reconstruction is a(n)
A)array processor
B)algorithm
C)filtered back projection
D)image data
Q4) Noise can be reduced by using a
A)lower pitch
B)higher pitch
C)shorter rotation time
D)None of the above
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