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Introduction to Radiographic Technology Exam Preparation
Guide
Course Introduction
Introduction to Radiographic Technology provides students with a foundational understanding of the principles and practices of diagnostic imaging. This course explores the history, terminology, and ethical considerations of radiographic technology, along with an overview of the healthcare environment and the role of radiologic technologists. Students learn about radiation physics, image production, safety protocols, patient care techniques, and the proper use and maintenance of radiographic equipment. Emphasis is placed on developing the basic skills and professional attitudes necessary for success in clinical settings, preparing students for further study and hands-on experience in radiography.
Recommended Textbook
Essentials of Radiographic Physics and Imaging 1st Edition by James Johnston
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16 Chapters
1558 Verified Questions
1558 Flashcards
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Chapter 1: Introduction to the Imaging Sciences
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75 Verified Questions
75 Flashcards
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Sample Questions
Q1) In the SI system the unit of measure for length is:
A) meter
B) kilometer
C) foot
D) mile
Answer: A
Q2) The device that restricts the x-ray beam to the area of interest is the:
A) tube housing
B) collimator
C) mirror
D) crosshair
Answer: B
Q3) Wilhelm Roentgen's lab was located in:
A) Wurzburg
B) Zurich
C) Paris
D) Boston
Answer: A
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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) Atoms with the same atomic number but different atomic mass numbers are:
A) isotopes
B) isotones
C) isobars
D) isomers
Answer: A
Q2) The atoms of the elements at the top of the periodic table of elements are the most complex.
A)True
B)False
Answer: False
Q3) An atom of helium ( He)has:
A) two protons
B) four protons
C) four neutrons
D) four electrons
Answer: A
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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) As compared to an alpha particle,a beta particle:
A) has less mass
B) has more mass
C) has the same mass
D) is less penetrating
Answer: A
Q2) When considering the wave properties of electromagnetic radiation,the maximum height of a wave is:
A) wavelength
B) amplitude
C) frequency
D) velocity
Answer: B
Q3) When compared with a beta particle,the alpha particle is:
A) much smaller
B) much larger
C) more penetrating
D) none of the above
Answer: B
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Page 5
Chapter 4: X-Ray Circuit
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147 Verified Questions
147 Flashcards
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Sample Questions
Q1) Reducing the number of coils in the wire will result in:
A) increased electromagnetic induction
B) reduced electromagnetic induction
C) no effect on electromagnetic induction
Q2) The number of turns on the primary and secondary sides of the step-down transformer can be adjusted to control the current to the filaments.
A)True
B)False
Q3) Three-phase power:
A) uses three AC.waveforms at the same time
B) results in three times the ripple
C) is half-wave rectified
D) A and B
Q4) The n-type crystal from a solid-state rectifier has an abundance of:
A) electrons
B) electron traps
C) protons
D) proton traps
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Chapter 5: The X-Ray Tube
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108 Verified Questions
108 Flashcards
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Sample Questions
Q1) Modern x-ray equipment is so safe that it is all right to handle the high-voltage cables.
A)True
B)False
Q2) When the exposure switch at the operating console is first depressed:
A) high voltage creates a large potential difference between the anode and cathode
B) the anode starts rotating
C) thermionic emission is achieved
D) B and C
Q3) The rotor is found:
A) near the tube window
B) outside the envelope
C) inside the envelope
D) towards the cathode end of the tube
Q4) The area of the envelope where x-rays should exit the tube is the:
A) door
B) window
C) trap
D) gate
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Chapter 6: X-Ray Production
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68 Verified Questions
68 Flashcards
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Sample Questions
Q1) Characteristic x-ray photons result:
A) when an outer-shell electron is knocked out
B) when an inner-shell electron is knocked out
C) when outer-shell electrons fill the vacancy in an inner shell
D) B and C
Q2) When 65 kVp is set on the operating console,no K-characteristic radiation is produced.
A)True
B)False
Q3) A discrete emission spectrum is a graphic representation of:
A) characteristic radiation
B) bremsstrahlung radiation
C) remnant radiation
D) A and B
Q4) L-characteristic and higher photon energies are not usually displayed on a discrete emission spectrum because:
A) there are no photons produced at those levels
B) the energies of the photons produced are too high for image production
C) the energies of the photons produced are too low for image formation
D) none of the above;these photon energies are displayed
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Chapter 7: X-Ray Interactions With Matter
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63 Flashcards
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Sample Questions
Q1) Classical interactions are also known as:
A) coherent scattering
B) Compton scattering
C) Thomson scattering
D) A and C
Q2) Coherent scattering involves:
A) an x-ray photon with high energy
B) an x-ray photon with low energy
C) ionization
D) all of the above
Q3) Secondary x-ray photons are the result of:
A) Compton interactions
B) Thompson scattering
C) photoelectric interactions
D) A and C
Q4) Compton scattering typically occurs with x-ray photons in the energy range of:
A) 5-10 keV
B) 20-40 keV
C) 60-90 keV
D) 100-135 keV
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Chapter 8: Image Production
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66 Verified Questions
66 Flashcards
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Sample Questions
Q1) In the image intensifier,the photocathode:
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
Q2) The probability of a Compton interaction occurring depends on:
A) the type of tissue being imaged
B) the binding energy of the atom's inner-shell electron
C) the energy of the incoming x-ray photon
D) all of the above
Q3) Before processing,the image receptor has a(n)__________ image.
A) latent
B) visible
C) invisible
D) A and C
Q4) Production of a static or still image is associated with:
A) film-screen imaging
B) digital imaging
C) film-screen and digital imaging
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Chapter 9: Image Characteristics
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161 Verified Questions
161 Flashcards
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Sample Questions
Q1) Film is able to produce optical densities between:
A) 0.0 and 2 OD
B) 0.0 and 3 OD
C) 0.0 and 4 OD
D) 0.0 and 5 OD
Q2) Recorded detail is reduced when there is:
A) elongation of the anatomy
B) OID is increased
C) SID is increased
D) A and B
Q3) With film-screen,the overall blackness produced on the processed image is:
A) a geometric property
B) a photographic property
C) radiographic density
D) B and C
Q4) Bit depth is determined by the:
A) FOV
B) computer memory
C) analog-to-digital converter
D) amount of remnant radiation
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Chapter 10: Radiographic Exposure Technique
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163 Verified Questions
163 Flashcards
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Sample Questions
Q1) Using a technique chart can significantly reduce patient exposure.
A)True
B)False
Q2) Increasing the kVp:
A) increases the energy of the x-ray photons
B) increases the quantity of x-ray photons
C) increases the penetrating power of x-ray photons
D) all of the above
Q3) The controlling factor for density when using a film-screen image receptor is:
A) SID
B) mAs
C) OID
D) image receptor type
Q4) Increasing tube filtration:
A) increases the beam energy
B) decreases radiographic contrast
C) A and B
D) none of the above
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Page 12
Chapter 11: Scatter Control
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80 Verified Questions
80 Flashcards
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Sample Questions
Q1) The grid limits the amount of scatter radiation produced in the patient.
A)True
B)False
Q2) If all the convergent points were connected along the length of the grid they would form the:
A) convergent line
B) focal distance
C) convergent point
D) focal range
Q3) The purpose of automatic collimation is:
A) improved image quality
B) limiting patient exposure
C) increasing the cost of equipment
D) none of the above
Q4) The Moiré effect can be caused by:
A) using a grid with a frequency similar to the CR laser scanning frequency
B) using a focused grid upside down in the bucky
C) using a grid cassette in the bucky
D) A and C
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Chapter 12: Image Receptors
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167 Verified Questions
167 Flashcards
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Sample Questions
Q1) Adjustments in window width and level allow a limited portion of the gray scale to be expanded and the gray levels differentiated in the image.
A)True
B)False
Q2) Film is the medium for:
A) processing
B) display
C) image acquisition
D) all of the above
Q3) Rare earth phosphors absorb approximately _______ of the incident x-ray photons.
A) 10%
B) 40%
C) 60%
D) 90%
Q4) When film is used,mammography and CT imaging use:
A) single-emulsion film
B) double-emulsion film
C) A and B
D) none of the above
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Chapter 13: Automatic Exposure Control
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60 Flashcards
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Sample Questions
Q1) When using AEC with digital imaging,errors resulting in overexposure to the IR result in:
A) images that are dark
B) images with appropriate brightness
C) overexposed patients
D) B and C
Q2) Phototimer AEC devices convert the radiation to light energy.
A)True
B)False
Q3) When there is a significant amount of scatter radiation reaching the detector,the exposure time will:
A) be shorter than needed
B) be appropriate
C) be longer than needed
Q4) When the x-rays enter the ionization chamber:
A) atoms become ions
B) atoms give up electrons
C) electrons and positive ions become electricity
D) all of the above
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Chapter 14: Image Intensified Fluoroscopy
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) The original fluoroscopic image was very:
A) dim
B) bright
C) clear
D) fuzzy
Q2) The diameter of the input phosphor typically measures between:
A) 5-10 cm
B) 15-30 cm
C) 40-65 cm
D) 75-100 cm
Q3) Fluoroscopic equipment should be inspected every:
A) week
B) month
C) 6 months
D) year
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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Chapter 15: Additional Equipment
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54 Flashcards
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Sample Questions
Q1) 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
Q2) The exposure amplitude is always _______________________ the tomographic amplitude.
A) the same as
B) shorter
C) longer
D) A or B
Q3) This type of dedicated unit is typically used to image the mandible and teeth.
A) chest
B) panorex
C) mammography
D) bone densitometry
Q4) Linear tomography is used to overcome the limitation that some anatomic areas are difficult to see because they are superimposed by other structures.
A)True
B)False
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Chapter 16: Computed Tomography
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125 Flashcards
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Sample Questions
Q1) It is important to balance reductions in patient dose with:
A) examination cost
B) image quality
C) scan time
D) all of the above
Q2) The CT gantry houses the:
A) x-ray tube
B) detector array
C) collimators
D) all of the above
Q3) Noise can be reduced by using a:
A) lower pitch
B) higher pitch
C) shorter rotation time
D) none of the above
Q4) This scanner uses a wide fan beam and a rotating array of detectors.
A) first generation
B) second generation
C) third generation
D) fourth generation
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