Final Test CT Scan/ Anatomy

50 Questions | Total Attempts: 428

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Computed Tomography Quizzes & Trivia

Questions and Answers
  • 1. 
    The main purpose of the slip ring technology is to:
    • A. 

      Increase the number of dectors that can be housed in the gantry

    • B. 

      Make the CT scanning operation quieter

    • C. 

      Allow for continous rotation of the dectors and X-ray tube around the patient

    • D. 

      Reduce the potential for motion artifacts associated with spiral/ helical scanning

  • 2. 
    The CT number for water is:
    • A. 

      Varies depending on the type of tissue being scanned

    • B. 

      Should always be near 0

    • C. 

      Is irrelevent to CT scanning

    • D. 

      Needs to be factored into tissues containing alot of water

  • 3. 
    ____________, pick up and measure the radiation passing through a cross-section of the patiant, convert the transmitted photons into an electrical signal, and then send the signal to the computer system for processing.  
    • A. 

      Collimators

    • B. 

      Detectors

    • C. 

      Filters

    • D. 

      Slip Rings

  • 4. 
    The gallbladder is located:
    • A. 

      Right upper quadrant

    • B. 

      Left upper quadrant

    • C. 

      Right lower quadrant

    • D. 

      Left lower quadrant

  • 5. 
    There are ____ cervical vertebrae?
    • A. 

      5

    • B. 

      6

    • C. 

      7

    • D. 

      8

  • 6. 
    The __________ axix is referred to as the sagittal plane.
    • A. 

      X axis

    • B. 

      Y axis

    • C. 

      Z axis

    • D. 

      None of the above

  • 7. 
    CT scanners contain what type of collimators:
    • A. 

      Pre patient collimators

    • B. 

      Post patient collimators

    • C. 

      Both pre and post patient collimators

    • D. 

      Automatic collimators

  • 8. 
    Thin collimation results in ________ resolution:
    • A. 

      Less

    • B. 

      Better

    • C. 

      Both

  • 9. 
    The scan field of view (SFOV) is selected _______ the scan begains
    • A. 

      After

    • B. 

      Before

    • C. 

      During

  • 10. 
    The display field of view (DFOV) can be equal to or ________ than the scan field of view?
    • A. 

      Less than

    • B. 

      Greater than

    • C. 

      Same size as the SFOV

  • 11. 
    The ________ axis, or the coronal plane divides the patiants body into anterior and posterior sections.
    • A. 

      X axis

    • B. 

      Y axis

    • C. 

      Z axis

    • D. 

      A axis

  • 12. 
    Spatial resolution describes the degree of blurring in an image and is a measure of how small an object can be imaged.
    • A. 

      True

    • B. 

      False

  • 13. 
    Preprocessed CT data is referrred to as_____
    • A. 

      Raw data

    • B. 

      Image Data

    • C. 

      Display data

    • D. 

      Scan data

  • 14. 
    Reconstruction that is performed at a much later time is known as________;
    • A. 

      Multiplaner reconstruction

    • B. 

      Curved reconstruction

    • C. 

      Minimum intensity projection

    • D. 

      Retrospective reconstruction

  • 15. 
    The Z axis is called the _______ because it divides the body into superior and inferior parts.
    • A. 

      Coronal Plane

    • B. 

      Z gap

    • C. 

      Axial Plane

    • D. 

      Image Plane

  • 16. 
    Acute renal faliure occurs after all IV contrast injections
    • A. 

      True

    • B. 

      False

  • 17. 
    CT contrast can be administered via:
    • A. 

      PO, Oral, and Rectal

    • B. 

      Oral, Po, and IV

    • C. 

      Iv, Oral, and Rectal

    • D. 

      Rectal, PO, and oral

  • 18. 
    A patient with an allergy to Iodine can still be injected after premedication has been adminstered. 
    • A. 

      True

    • B. 

      False

  • 19. 
    The ______houses most of the functional equipment parts needed to acquire image data.  
    • A. 

      Generator

    • B. 

      Computer

    • C. 

      Gantry

    • D. 

      Table

  • 20. 
    Cardiac arrest is classified as a _______reaction:
    • A. 

      Severe

    • B. 

      Minor

    • C. 

      Intermediate

    • D. 

      Death

  • 21. 
    The detectors which measure the patiants attenuation data are located _______ the XRay tube.
    • A. 

      Inside

    • B. 

      Under

    • C. 

      Next to

    • D. 

      Opposite

  • 22. 
    As the pitch increases the patient moves through the gantry at a _____ rate.
    • A. 

      Faster

    • B. 

      Slower

    • C. 

      Table speed does not change

  • 23. 
    As the pitch increases the patiant dose ______.
    • A. 

      Doubles

    • B. 

      Increases

    • C. 

      Stays the same

    • D. 

      Decreases

  • 24. 
    Window width (WW) determines the maximun ________ that can be displayed on the CT monitor.  
    • A. 

      Pixels

    • B. 

      Number of Images

    • C. 

      Number of shades of gray

    • D. 

      Size of matrix

  • 25. 
    A pixel is a ________ element that is assigned a gray value in the form of a ct number.
    • A. 

      Box

    • B. 

      Two- dimensional

    • C. 

      3D

    • D. 

      Small