Applied Radiographic Science
Test Preparation
Course Introduction
Applied Radiographic Science explores the foundational principles and practical applications of radiographic imaging in healthcare settings. The course covers topics such as image production, radiation physics, safe operation of radiographic equipment, and patient positioning. Students will develop skills in image analysis, quality assurance, and adherence to safety protocols, with a focus on optimizing diagnostic accuracy while minimizing radiation exposure. Emphasis is placed on clinical decision-making, ethical considerations, and current best practices in radiographic technology to prepare students for professional roles in medical imaging departments.
Recommended Textbook Essentials of Radiographic Physics and Imaging 2nd Edition by James Johnston
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16 Chapters
1530 Verified Questions
1530 Flashcards
Source URL: https://quizplus.com/study-set/1322
Page 2
Chapter 1: Introduction to the Imaging Sciences
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76 Verified Questions
76 Flashcards
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Sample Questions
Q1) Newton's first law of motion states that,unless acted on by an external force,an object at rest
A)will stay at rest
B)will move very slowly
C)will accelerate very quickly
D)none of the above
Answer: A
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) Velocity,acceleration,and work are
A)fundamental quantities
B)derived quantities
C)radiologic quantities
D)none of the above
Answer: B
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Page 3
Chapter 2: Structure of the Atom
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63 Verified Questions
63 Flashcards
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Sample Questions
Q1) The word atom is derived from the Greek word atomos,meaning
A)nuclear
B)small
C)indivisible
D)invisible
Answer: C
Q2) The number of protons and neutrons in the atom's nucleus is the
A)atomic number
B)atomic mass number
C)element
D)compound
Answer: B
Q3) Except for the K shell,the maximum number of electrons that can be in the outermost shell of an atom is
A)4
B)8
C)16
D)32
Answer: B
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Page 4
Chapter 3: Electromagnetic and Particulate Radiation
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58 Verified Questions
58 Flashcards
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Sample Questions
Q1) Which of the following electromagnetic radiations have the lowest energy level?
A)X-rays.
B)Visible light.
C)Microwaves.
D)Radio waves.
Answer: D
Q2) When the formula v = fl is changed to c = fl,the c represents the constant symbol for:
A)wavelength
B)frequency
C)amplitude
D)the speed of light
Answer: D
Q3) The general process of a radioactive element giving off excess energy and particles to regain stability is
A)radioactivity
B)radioactive decay
C)ionization
D)electron emission
Answer: B
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Page 5
Chapter 4: The X-Ray Circuit
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152 Verified Questions
152 Flashcards
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Sample Questions
Q1) A device that temporarily stores charge is the
A)rheostat
B)capacitor
C)transformer
D)fuse
Q2) Closed-core and shell-type transformers
A)are seldom used in x-ray equipment
B)are less efficient types of transformers
C)are simpler types of transformers
D)are more sophisticated and incorporate a ferromagnetic core
Q3) A volt is the ratio of work per unit of charge and is written
A)Joules/Coulomb
B)Coulomb/Joules
C)Watt/Coulomb
D)Coulomb/Watt
Q4) Every magnet has a north,south,east,and west pole.
A)True
B)False
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Chapter 5: The X-Ray Tube
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110 Verified Questions
110 Flashcards
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Sample Questions
Q1) The formula kVp × mA × s × c is used to calculate
A)heat units
B)cooling time
C)heating time
D)Hounsfield units
Q2) The rotor is supplied with electric current through the x-ray circuit.
A)True
B)False
Q3) Which of the following practices extend tube life?
A)Press the prep and exposure switches at almost the same time.
B)Warm up the tube just before turning the equipment off.
C)Use high exposures.
D)None of the above.
Q4) The effective focal spot is the
A)same as the actual focal spot
B)actual area where the electrons hit the target
C)actual size of the origin of the x-ray beam
D)origin of the x-ray beam as seen from below the tube
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Chapter 6: X-Ray Production
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72 Verified Questions
72 Flashcards
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Sample Questions
Q1) Generally speaking,an increase in the quantity of radiation results in decreased patient dose.
A)True
B)False
Q2) A filament electron removes a K shell electron and an M shell electron fills the vacancy.The K shell binding energy is 69.5 keV and the M shell binding energy is 2.8 keV.What is the energy of the K-characteristic photon produced?
A)2.8 keV.
B)57.4 keV.
C)66.7 keV.
D)69.5 keV.
Q3) Half-value layer (HVL)is used to measure
A)beam intensity
B)beam quantity
C)beam quality
D)all of the above
Q4) The discrete emission spectrum is limited to a few specific values.
A)True
B)False
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Chapter 7: X-Ray Interactions With Matter
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66 Verified Questions
66 Flashcards
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Sample Questions
Q1) Photodisintegration occurs when the incident photon interacts with
A)an inner-shell electron
B)an outer-shell electron
C)inner- and outer-shell electrons
D)the nucleus of the atom
Q2) The x-ray photon produced during classical scattering
A)is lower energy than the incident photon
B)is higher energy than the incident photon
C)is the same energy as the incident photon
D)continues traveling in the same direction as the incident photon
Q3) After ejection from the atom's nucleus,when the positron interacts with an electron
A)an annihilation event occurs
B)the electron and positron are both destroyed
C)two x-ray photons are produced
D)all of the above
Q4) The probability of Compton scattering depends on the atomic number of the atom.
A)True
B)False
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9
Chapter 8: Image Production
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66 Verified Questions
66 Flashcards
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Sample Questions
Q1) Decreased attenuation 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
Q2) In the image intensifier,the input phosphor
A)converts remnant radiation to light
B)focuses the electrons
C)converts light to electrons
D)absorbs the energized electrons and produces a brighter image
Q3) Production of a static or still image is associated with
A)film-screen imaging
B)digital imaging
C)film-screen and digital imaging
Q4) The ability to remove electrons from an atom is
A)absorption
B)transmission
C)ionization
D)none of the above
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Chapter 9: Image Quality and Characteristics
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129 Verified Questions
129 Flashcards
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Sample Questions
Q1) How many pixels does a 600 × 600 matrix have?
A)600
B)1200
C)3600
D)360,000
Q2) The number of bits that determine the gray level that can be assigned to a pixel is the
A)matrix
B)FOV
C)pixel
D)bit depth
Q3) If 6000 light photons enter a film and 1500 photons exit the same area,the percent transmittance is
A)4%
B)15%
C)20%
D)25%
Q4) Characteristic and H&D are other terms for sensitometric curves.
A)True
B)False
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Chapter 10: Radiographic Exposure Technique
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135 Verified Questions
135 Flashcards
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Sample Questions
Q1) With digital imaging,if the mAs is too high
A)the image brightness will appear low (dark)
B)the image brightness will appear appropriate
C)the image brightness will appear high (light)
D)none of the above
Q2) At higher levels,kVp always decreases radiographic contrast.
A)True
B)False
Q3) __________________ SID and ______________________ OID results in increased magnification.
A)increased;increased
B)decreased;decreased
C)increased,decreased
D)decreased;increased
Q4) Increased beam restriction means decreased collimation.
A)True
B)False
Q5) mAs and kVp both affect the density and contrast of a film image.
A)True
B)False
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Chapter 11: Scatter Control
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80 Verified Questions
80 Flashcards
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Sample Questions
Q1) 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.
Q2) 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
Q3) The grid limits the amount of scatter radiation produced in the patient.
A)True
B)False
Q4) If 24 mAs and a 6:1 grid results in an excellent radiograph,how much mAs is needed with a 5:1 grid?
A)16 mAs.
B)20 mAs.
C)28.8 mAs.
D)36 mAs.
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Chapter 12: Image Receptors
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176 Verified Questions
176 Flashcards
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Sample Questions
Q1) Europium serves as
A)an activator for the phosphor
B)the protective layer
C)the reflective part of the PSP plate
D)the conductive layer
Q2) How sensitive the film is to x-rays or light is the
A)film speed
B)film latitude
C)film contrast
D)spectral sensitivity
Q3) Undesirable fluctuations in the brightness of an image is
A)contrast
B)noise
C)DQE
D)DAP
Q4) No amount of postprocessing will correct for poor image-acquisition procedures.
A)True
B)False
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Chapter 13: Exposure Technique Selection
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63 Verified Questions
63 Flashcards
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Sample Questions
Q1) These can be adjusted to increase or decrease the amount of radiation needed to terminate the exposure using AEC
A)mAs readout
B)Back-up time
C)Minimum response time
D)Density controls
Q2) When using AEC,the radiographer is responsible for determining A)kVp
B)mAs
C)exposure time
Q3) With digital imaging using AEC,if an AP thoracic spine is imaged using 110 kVp instead of 80 kVp,the brightness in the area of interest is __________________ and the patient exposure is ________________________.(Assume all other factors are appropriate. )
A)darker;higher
B)unchanged;higher
C)lighter;lower
D)unchanged;lower
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Chapter 14: Image Intensified Fluoroscopy
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95 Verified Questions
95 Flashcards
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Sample Questions
Q1) The commercial fluoroscope was developed by
A)Rutherford
B)Edison
C)Newton
D)Einstein
Q2) The electrostatic focusing lenses have a ___________ charge.
A)negative
B)positive
C)neutral
D)changing
Q3) In LCD monitors,the number of TFTs is equal to the
A)number of crystals in the liquid crystal layer
B)number of pixels displayed
C)Lp/mm of resolution
D)display line system
Q4) This allows the film to be divided into 2,4,or more images
A)Cassette spot filming with masking shutters
B)Film cameras for spot filming
C)Videotape
D)Flat panel detector
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Chapter 15: Additional Equipment
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53 Verified Questions
53 Flashcards
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Sample Questions
Q1) The radiographer does not need to wear a lead apron while imaging patients using mobile equipment because the exposure is very minimal.
A)True
B)False
Q2) Breast imaging is done on this type of dedicated radiographic unit
A)Chest
B)Panorex
C)Mammography
D)Bone densitometry
Q3) Radiographic or fluoroscopic units that are transportable to the patient's bedside or the operating room are called
A)mobile equipment
B)radiographic mobile unit
C)fluoroscopic mobile unit (c-arm)
D)all of the above
Q4) The mammography unit's x-ray tube window is made of beryllium.
A)True
B)False
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Chapter 16: Computed Tomography
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136 Verified Questions
136 Flashcards
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Sample Questions
Q1) Which of the following data needs to be known to perform an attenuation calculation?
A)Thickness of the part.
B)Original x-ray beam intensity.
C)The intensity of the transmitted radiation (as measured by the detector).
D)A and C.
E)All of the above.
Q2) Slices of anatomy that are reformatted to go from side to side are A)coronal
B)sagittal
C)axial
Q3) The range of CT numbers visible in the CT image is determined by the
A)window level
B)window height
C)window width
D)window clearance
Q4) Electron-beam CT does not use an x-ray tube.
A)True
B)False
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