Medical Equipment(CT Scanner)

252 Questions | Total Attempts: 81

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Computed Tomography Quizzes & Trivia

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Questions and Answers
  • 1. 
    CT is commonly referred to as all of the following names EXCEPT
    • A. 

      Digital subtraction angiography

    • B. 

      Computed tomography

    • C. 

      CAT-scan

    • D. 

      Computerized axial tomography

  • 2. 
    A First Generation scanner:
    • A. 

      Used curved array of detectors

    • B. 

      Produced an image in less than 5 seconds

    • C. 

      Used multiple detectors

    • D. 

      Used pencil beam of x-rays

  • 3. 
    Fourth-generation scanners ____________ while second-generation CT scanners do not.
    • A. 

      Use multiple detectors

    • B. 

      Have a detector ring which does not rotate

    • C. 

      Have a rotating ring of detectors

    • D. 

      Apply fan beam geometry

  • 4. 
    The slip ring on a CT scanner:
    • A. 

      Prevents the high voltage cable from winding up

    • B. 

      Advances the patient table

    • C. 

      Alleviates the need for reversal of the rotating assembly to which the tube is attached

    • D. 

      Option 4

  • 5. 
    X-rays are used in CT because:
    • A. 

      They are easily produced by the high frequency generator

    • B. 

      They are less harmful that the heating effects of microwave radiation

    • C. 

      They penetrate the body according to specific attenuation characteristics of each tissue

    • D. 

      The FDA imposes no limit on the dose of the patient

  • 6. 
    Bremsstrahlung radiation does NOT include which type of electron activity?
    • A. 

      Collision between an incoming electron and the nucleus of the target atom

    • B. 

      Collision between an incoming electron and an electron in an inner shell of the target atom

    • C. 

      Slowing down of an incoming electron due to the effect of passing close to the positive charge of the nucleus of the target atom

    • D. 

      Option 4

  • 7. 
    The enormous heat that builds up in the CT tube is caused by the:
    • A. 

      Electron beam between the cathode and the anode in the tube

    • B. 

      Collision of the electron beam with the tungsten target on the tube anode

    • C. 

      Intensity of the x-rays emitted from the tube

    • D. 

      X-ray filter in the tube which absorbs the lower energy photons before they can enter the patient

  • 8. 
    Which technology do multi-row detector scanners employ?
    • A. 

      First-generation

    • B. 

      Second-generation

    • C. 

      Third-generation

    • D. 

      Fourth-generation

  • 9. 
    The patient table ____________.
    • A. 

      Only moves after each slice is completed

    • B. 

      Remains stationary throughout the patient exam once it is initially positioned

    • C. 

      Can never be positioned automatically by software due to safety precautions

    • D. 

      May move continuously during the scan

  • 10. 
    The CT x-ray tube rotates around the patient to:
    • A. 

      Keep the tube cool

    • B. 

      Generate projection views at different angles

    • C. 

      Minimize the x-ray dose administered to the patient

    • D. 

      Option 4

  • 11. 
    Which of the following is a necessary part of the screening process?
    • A. 

      Determination of whether the patient may be pregnant

    • B. 

      Questioning regarding medical history

    • C. 

      Questioning regarding allergies

    • D. 

      Option4

  • 12. 
    Which of the following is a lab test to determine if the kidneys are properly removing .impurities from the blood?
    • A. 

      Creatinine

    • B. 

      PT

    • C. 

      Platelet count

    • D. 

      PTT

  • 13. 
    Which of the following is NOT a contraindication for a CT exam (plain and/or with Contrast)?
    • A. 

      Aneurysm clips

    • B. 

      Cardiac pacemakers

    • C. 

      Allergy to shellfish

    • D. 

      Option4

  • 14. 
    In preparation for a CT exam of the brain, patients must:
    • A. 

      Remove trousers and belts

    • B. 

      Remove eyeglasses and dentures

    • C. 

      Drink oral contrast media

    • D. 

      Option 4

  • 15. 
    Which of the following is considered a normal adult blood pressure?
    • A. 

      100mm Hg/70 mm Hg

    • B. 

      140mm Hg/100 mm Hg

    • C. 

      70mm Hg/100 mm Hg

    • D. 

      80mm Hg/40 mm Hg

  • 16. 
    Which of the following men was awarded the first Nobel Prize in Physics in 1901?
    • A. 

      Geoffrey Newton

    • B. 

      Godfrey Newbold Hounsfield

    • C. 

      Wilhelm Conrad Rontgen

    • D. 

      Albert von Kolliker

  • 17. 
    The first commercial CT scanner was available during the:
    • A. 

      1990s

    • B. 

      1980s

    • C. 

      1960s

    • D. 

      1970s

  • 18. 
    A detector array:
    • A. 

      is stationary in all scanner designs commercially available today

    • B. 

      Was first seen on third-generation CT scanners

    • C. 

      Rotates around the patient in all scanner designs

    • D. 

      Allows for much faster data collection than using a single detector

  • 19. 
    The main purpose of the detector is to:
    • A. 

      Provide additional collimation in order to reduce scatter

    • B. 

      Limit the x-ray dose to the patient

    • C. 

      Capture x-ray photons and convert them to a measurable signal

    • D. 

      Amplify the measured signal

  • 20. 
    X-ray photons are produced by a fast-moving electron:
    • A. 

      Colliding with an atomic nucleus

    • B. 

      Passing close to an atomic nucleus

    • C. 

      Colliding with an electron within an atom and ejecting it

    • D. 

      Option4

  • 21. 
    Question text____________________ made helical imaging possible
    • A. 

      The introduction of second-generation technology

    • B. 

      The introduction of fourth-generation technology

    • C. 

      Continous rotation scanners

    • D. 

      Multi-row detector scanners

  • 22. 
    Tungsten is used as the target material on the tube's anode because it has a __ atomic number and a __melting point.
    • A. 

      Low, high

    • B. 

      High, low

    • C. 

      Low, low

    • D. 

      High, high

  • 23. 
    The detectors:
    • A. 

      Shield the patient from x-rays

    • B. 

      produce the beam of x-rays

    • C. 

      Increase the x-ray exposure of the film

    • D. 

      Measure the x-rays that pass through the patient's body

  • 24. 
    The system console may include:
    • A. 

      Monitor

    • B. 

      Keyboard

    • C. 

      Graphic input device

    • D. 

      Option4

  • 25. 
    How many times should a patient be screened before having a CT exam?
    • A. 

      Screening is optional

    • B. 

      Once

    • C. 

      More than once

    • D. 

      Never