Trivia Quiz On CT Imaging Procedures

52 Questions | Total Attempts: 1619

SettingsSettingsSettings
Please wait...
Computed Tomography Quizzes & Trivia

A computed tomography(CT) scan is used by doctors to view the inner organs of your body like bones and tissues for diagnosing diseases and evaluating injuries. Through the help of CT scan, doctors can see and observe the various parts of your body like bones of shoulders, spine, abdomen etc. This quiz has been designed to test your knowledge about CT imaging procedures. Read the questions carefully and answer. So, let's try out the quiz. All the best!


Questions and Answers
  • 1. 
    High resolution CT is most commonly used for the evaluation of the
    • A. 

      Pancreas

    • B. 

      Brain

    • C. 

      Lung

    • D. 

      Mediastinum

  • 2. 
    During a CT guided needle biopsy, the needle insertion site is usually anaesthetized with
    • A. 

      Diazepam

    • B. 

      Lidocaine

    • C. 

      Lithium

    • D. 

      Oxycodone HCI

  • 3. 
    Which of the following abnormal findings reduces the density of the liver
    • A. 

      Hyperdense cyst

    • B. 

      Contrast enhancing tumor

    • C. 

      Fatty liver

    • D. 

      All the above

  • 4. 
    Which of the following sets of section widths and spacing is the most suitable for a general survey CT of the neck
    • A. 

      1.5 mm thick every 1.5

    • B. 

      3mm thick every 5mm

    • C. 

      5mm thick every 5mm

    • D. 

      10mm thick every 10mm

  • 5. 
    The _________ gland is located in the AP portion of the mediastinum and is often identified with CT when scanning younger PT's
    • A. 

      Thyroid

    • B. 

      Luschka

    • C. 

      Thymus

    • D. 

      Parathyroid

  • 6. 
    Which of the following CT Studies of the head may be performed W/O contrast
    • A. 

      CT angiogram for the Circle of Willis

    • B. 

      Coronal CT scan to rule out pituitary tumor

    • C. 

      CT of the brain to r/o hematoma

    • D. 

      CT of the brain to r/o metastatic disease

  • 7. 
    CT scanning of the liver for tumour evaluation should not be performed during which of the following phases of contrast enhancement
    • A. 

      Non equilibrium phase

    • B. 

      Equilibrium phase

    • C. 

      Dynamic phase

    • D. 

      Bolus phase

  • 8. 
    The Kidneys are located anatomically between which vertebrae
    • A. 

      T6 and L2

    • B. 

      T12 and L3

    • C. 

      L2 and L4

    • D. 

      L3 and S1

  • 9. 
    Axial CT images of the knee may be acquired in five separate series with knee flexions of 0, 15, 30, and 45 degrees in order to demonstrate the
    • A. 

      Tibial plateau

    • B. 

      Patellofemoral joint

    • C. 

      Medial and lateral menisci

    • D. 

      Anterior cruciate ligament

  • 10. 
    CT images acquired of the foot in a plane perpendicular to the long axis of the scout image shown are considered __________ images
    • A. 

      Axial

    • B. 

      Sagittal

    • C. 

      Coronal

    • D. 

      Transaxial

  • 11. 
    Which of the following is used to describe a set of rules for solving a mathematical problem?
    • A. 

      Reconstruction

    • B. 

      Algorithm

    • C. 

      Function

    • D. 

      Array

  • 12. 
    A 15 second spiral CT scan of the pelvis is performed using 1.0cm aperture size. If a pitch of 1:1 was used for the total length of coverage for this scan would be
    • A. 

      50cm

    • B. 

      100cm

    • C. 

      150cm

    • D. 

      250cm

  • 13. 
    A CT image should be viewed on the monitor in which of the following orientations.
    • A. 

      From the feet toward the head with PT's left on the viewers left

    • B. 

      From the feet toward the head with the PT's left on the viewers right

    • C. 

      From the head toward the feet with the PT's right on the viewers right

    • D. 

      From the head toward the feet with the PT's right on the viewers left

  • 14. 
    In which of the following cranial nerves would an acoustic neuroma be found?
    • A. 

      Third

    • B. 

      Eighth

    • C. 

      Tenth

    • D. 

      Twelfth

  • 15. 
    Which of the following interscan delays would be used for a dynamic CT study of the chest?
    • A. 

      4 sec

    • B. 

      8 sec

    • C. 

      12 sec

    • D. 

      15 sec

  • 16. 
    Which of the following types of pathologic conditions cannot be easily diagnosed from a CT Scan of the brain?
    • A. 

      Astrocytoma

    • B. 

      Traumatic herorrhage

    • C. 

      Cerebral infarct

    • D. 

      Alzheimers disease

  • 17. 
    Most pancreatic tumors occur in the pancreatic
    • A. 

      Head

    • B. 

      Body

    • C. 

      Tail

    • D. 

      Uncinate process

  • 18. 
    Before scanning the liver after a bolus injection of contrast, a delay of ___ should be applied
    • A. 

      0 sec

    • B. 

      20 sec

    • C. 

      45 sec

    • D. 

      120 sec

  • 19. 
    Which of the following technical changes may increase the partial volume effect present on a spiral CT scan
    • A. 

      Decrease in pitch

    • B. 

      Decrease in aperture size

    • C. 

      Increase in matrix size

    • D. 

      Increase in pitch

  • 20. 
    During which of the following CT exams is misregistration artefact most likely to occur
    • A. 

      Brain

    • B. 

      Pelvis

    • C. 

      Neck

    • D. 

      Abdomen

  • 21. 
    Which of the following mathematical functions may be used to quantify the spatial resolution of a CT scanner1 PSF2 MTF3 LSF
    • A. 

      2 only

    • B. 

      1 and 2

    • C. 

      2 and 3

    • D. 

      1, 2, and 3

  • 22. 
    The matrix size describes which of the following
    • A. 

      Aperture size used during data acquistion

    • B. 

      Number of pixels used to display an image

    • C. 

      Relationship between the FOV and algorithm

    • D. 

      None of the above

  • 23. 
    Which of the following is not an iterative method of CT image reconstruction
    • A. 

      Point by point correction

    • B. 

      Fourier transform

    • C. 

      Simultaneous reconstruction

    • D. 

      Ray by ray correction

  • 24. 
    In the following formula used to calculate the linear attenuation coefficient, I=Ioe -ux, the symbol Io identifies
    • A. 

      Eulers constant

    • B. 

      Incident intensity

    • C. 

      Absorber thickness

    • D. 

      Transmitted intensity

  • 25. 
    Which of the following would increase the noise of a CT image?
    • A. 

      Increased MAS

    • B. 

      Decreased aperture size

    • C. 

      Decreased filtration

    • D. 

      Decreased matrix size