Veterinary Radiography

68 Questions | Total Attempts: 897

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Veterinary Radiography

These are the questions directly from the back of each chapter. chapters 1,2,3,4,5,6,7 radiography in veterinary technology (4th ed. ) - Lisa M Lavin


Questions and Answers
  • 1. 
    The negatively charged particle of an atom is the:
    • A. 

      Proton

    • B. 

      Neutron

    • C. 

      Electron

    • D. 

      Nucleus

  • 2. 
    As x-rays pass through materials, they have the ability to:
    • A. 

      Cause some substances to fluoresce (emit visible light)

    • B. 

      Completely remove an electron from an atom, leaving the atom positively charged

    • C. 

      Cause chemical changes that can kill cells.

    • D. 

      All of the answers are correct

  • 3. 
    Which of the following statements is ture?
    • A. 

      X-rays with longer wavelengths penetrate farther than rays with shorter wavelengths

    • B. 

      X-rays with shorter wavelengths penetrate farther than rays with longer wavelengths

    • C. 

      Electromagnetic radiation with lower frequency has more penetrating power through space and matter

    • D. 

      Gamma rays are required for the production of a radiography

  • 4. 
    Electrons travel
    • A. 

      Toward the cathode in an x-ray tube

    • B. 

      Away from the anode in an x-ray tube

    • C. 

      Toward the anode in an x-ray tube

    • D. 

      Within the nucleus of an atom

  • 5. 
    In x-ray tubes, the majority of energy produced by the movement of electrons is in the form of
    • A. 

      Light

    • B. 

      Heat

    • C. 

      Sound

    • D. 

      X-ray energy

  • 6. 
    On the electromagnetic spectrum, in relation to visible light, x-rays
    • A. 

      Have a longer wavelength

    • B. 

      Have a lower frequency

    • C. 

      Have a shorter wavelength

    • D. 

      Are closer in wavelength to infrared rays than light waves

  • 7. 
    Bundles of every that travel in a wave are called
    • A. 

      Protons

    • B. 

      Photons

    • C. 

      Quanta

    • D. 

      Electrons

  • 8. 
    X-ray electromagnetic radiation travels in a straight line, the direction of which can be altered
    • A. 

      True

    • B. 

      False

  • 9. 
    A radiograph is synonymous with an x-ray
    • A. 

      True

    • B. 

      False

  • 10. 
    Filaments located in an x-ray tube
    • A. 

      Are made of molybdenum

    • B. 

      Must have a low melting point and low atomic number

    • C. 

      Are found in the anode

    • D. 

      Emit electrons when heated

  • 11. 
    The anode's target
    • A. 

      Is composed of tungsten

    • B. 

      Reaches temperatures in excess of 1000*C during x-ray production

    • C. 

      Usually has a copper base

    • D. 

      All the answers are correct

  • 12. 
    Which of the following are limitations of the stationary anode?
    • A. 

      The target is made of tungsten

    • B. 

      It is unable to withstand large amount of heat

    • C. 

      If the target becomes pitted, radiographs appear darker

    • D. 

      It is limited to a larger focal spot to accommodate higher temperatures

  • 13. 
    How can the technician help to prolong the life of the filament in the x-ray tube
    • A. 

      Enter the proper exposure settings in the control panel before the final positioning of the animal

    • B. 

      Leave the x-ray unit on at all times to ensure that the filament is heated when the radiograph is requested

    • C. 

      Always leave the x-ray unit in the standby mode

    • D. 

      The technician can do nothing because filament defects are largely the fault of the manufacturer

  • 14. 
    Which of the following are pssible effects of excessive heat within an x-ray tube
    • A. 

      Bearing failure and decreased anode speed

    • B. 

      Roughened target surface

    • C. 

      Arcing

    • D. 

      All answers are correct

  • 15. 
    A small amount of air within the glass envelope is beneficial because it helps to dissipate heat.
    • A. 

      True

    • B. 

      False

  • 16. 
    Veterinary patients have a tendency to move while being positined for radiographs to be taken. the radiographer should help to safely prevent artifacts of movement by:
    • A. 

      Using the shortest exposure time possible

    • B. 

      Altering the direction in which the x-rays move

    • C. 

      Selecting a longer exposure time than is recommended

    • D. 

      Sedating all patients before taking radiographs

  • 17. 
    Which of the following is recommended to reduce unnecessary irradiation of the patient or persons restraining the patient and to decrease scatter radiation?
    • A. 

      Opening the collimator as wide as possible

    • B. 

      Placement of a lead apron over the area of interest on the patient

    • C. 

      Selection of full-wave rectification as opposed to half-wave rectification on the control panel

    • D. 

      Adjustment of the collimator so that the smallest filed size possible is used

  • 18. 
    X-ray tube  ratings are based on target angle, focal spot size, electrical current (single- or three-phase operation) and:
    • A. 

      Rectification

    • B. 

      Its alloy composition

    • C. 

      Anode speed

    • D. 

      Type of filament

  • 19. 
    The advantages of using an x-ray machine with a three-phase generator as opposed to a single-phase generator include:
    • A. 

      Creation of more low-energy electrons bombarding the target, thus producing less heat

    • B. 

      Use of shorter exposure times because more power is available to the x-ray tube per unit time

    • C. 

      Production of more low-energy x-rays so that radiation quality is increased

    • D. 

      Generation of considerably higher intensity of the x-radiation

  • 20. 
    Which of the follwoing is a type of somatic damage cuased by radiation?
    • A. 

      Gene mutation

    • B. 

      Cataracts

    • C. 

      Sterility

    • D. 

      None of these answers are correct

  • 21. 
    Which statement is true?
    • A. 

      The body's cells are all approximately equally sensitive to radiation

    • B. 

      Ionizing radiation only damages chromosomal material (DNA) within reproductive cells

    • C. 

      Chemical restraint of veterinary patients is prohibited by NCRP in the United States

    • D. 

      Genetic damage is not detectable until future generations are produced

  • 22. 
    What is the upper limit of exposure that an occupationaly exposed individual may receive according to state and federal regulations?
    • A. 

      0.5 Sv/year

    • B. 

      100 rem/year

    • C. 

      0.05 Sv/year

    • D. 

      0.005 Sv/year

  • 23. 
    All of the following are true, EXCEPT:
    • A. 

      Animals' cells are not as susceptible to damage from irradiation as human cells

    • B. 

      Radiation can affect the body's ability to produce red and white blood cells

    • C. 

      Exposure to radiation can affect the lens by causing cataracts

    • D. 

      Individuals younger than 18 years of age may not assist with animal restraint while radiographs are taken

  • 24. 
    A film badge
    • A. 

      Is a type of pocket ionization chamber

    • B. 

      Is a type of dosimeter designed to monitor the actual amount of radiation received

    • C. 

      Must always be worn on the collar

    • D. 

      Should always be submitted weekly to determine the level of exposure

  • 25. 
    What type of dosimeter can be stored for years, maintains its information, and can be reused
    • A. 

      Pocket ionization chamber

    • B. 

      Collimator

    • C. 

      Thermoluminescent dosimeter

    • D. 

      Film badge

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