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MRI Anatomy And Imaging

31 Questions
MRI anatomy and imaging

Cross-sectional anatomy and Imaging

Questions and Answers
  • 1. 
    Which letter corresponds to the achilles tendon?
    • A. 

      A

    • B. 

      H

    • C. 

      K

    • D. 

      I

  • 2. 
  • 3. 
    LABEL
  • 4. 
    Label
  • 5. 
    What type of image is shown?
  • 6. 
  • 7. 
  • 8. 
  • 9. 
    This image was aquired with localizers placed
    • A. 

      Using the axial to place the localizers perpendicular to the supraspinatus tendon

    • B. 

      Using the axial to place the localizers parallel to the supraspinatus tendon

  • 10. 
    The letter a corresponds to
    • A. 

      Styloid of the clavicle

    • B. 

      Supraspinatus tendon

    • C. 

      Deltoid insertion

    • D. 

      Superior labrium

  • 11. 
    The letter d represents the
    • A. 

      Deltoid insertion

    • B. 

      Supraspinatus tendon

    • C. 

      Rotator cuff

    • D. 

      Humeral head

  • 12. 
    The highlighted area represents
    • A. 

      Deltoid muscle

    • B. 

      Supraspinatus tendon

    • C. 

      Infraspinatus

    • D. 

      Posterior labrum

  • 13. 
    Which letter corresponds to the right adrenal gland
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 14. 
    Which letter corresponds to the inferior vena cava?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 15. 
    List 6 ways to eliminate aliasing.
  • 16. 
    SNR and bandwidth relationship
    • A. 

      SNR = change in NEX or new NEX / old NEX

    • B. 

      SNR = sq rt of change in bandwidth or new RBW / old RBW

    • C. 

      SNR = 1/sq rt of change in BW or 1 / (new RBW / old RBW)

    • D. 

      SNR = 1 / sq rt of change in BW or 1 / (old / RBW /new RBW)

  • 17. 
    What is the relationship of slice and SNR?
    • A. 

      SNR = change in slice= new / old

    • B. 

      SNR = Sq rt of change of slice = 1/ (new/old)

    • C. 

      SNR = 1/ sq rt of slice = sq rt of 1 / (new/old)

    • D. 

      SNR = change in slice = old/ new

  • 18. 
    FOV vs. SNR
    • A. 

      SNR = (Old FOV/ new FOV)sq

    • B. 

      SNR = sq rt (old FOV/ new FOV)

    • C. 

      SNR = sq rt of change in FOV= sq rt ( new/old FOV)

    • D. 

      SNR = (new FOV/ old FOV) sq

  • 19. 
    Matrix vs FOV
    • A. 

      SNR = 1/(new phase step/ old phase step)

    • B. 

      SNR = (change in phase step)sq = (old ph/new ph)sq

    • C. 

      SNR= sq rt of change in phase step = 1/ sq rt of (new/old phase)

    • D. 

      SNR 1/ sq rt of change in phase = 1/ sq rt of (old / new)

  • 20. 
    NEX vs SNR
    • A. 

      SNR = change in NEX= old/ new NEX

    • B. 

      SNR = (Change in NEX)sq = (new/old Nex)sq

    • C. 

      SNR = 1/ sq rt of change in NEX + Sq rt (new/old NEX)

    • D. 

      SNR = (Change in NEX)sq rt = (new/old NEX)sq rt

  • 21. 
    Pixels vs Resolution
    • A. 

      (Pixel width) ( Slice) / Pixel Ht = Resolution

    • B. 

      (Pixel ht) (Pixel Width) (Slice) = Resolution

    • C. 

      (Pixel Ht) (Slice) / (Pixel Width)= Resolution

    • D. 

      Slice / (pixel ht) (Pixel Width) = Resolution

  • 22. 
    Phase and frequency vs resolution
    • A. 

      (Phase step/FOV) (Freq step/FOV) (Sl) = mm3

    • B. 

      (PE/FOV/Fr E /FOV)/ Sl = mm3

    • C. 

      (FOV/PE) (FOV/FrE) (Sl) = mm3

    • D. 

      Sl/ (FOV/PE)(FOV/FrE)= mm3

  • 23. 
    Equation of 2D scan time
  • 24. 
    Equation of 3D scan time
  • 25. 
    Scan time for Fast Spin Echo
  • 26. 
    Imaging time
  • 27. 
    Effective TR
  • 28. 
    Voxel Volume:
  • 29. 
    Non MRI individuals should stay behind
  • 30. 
    List the SAR for the following: 1.  body temp; 2. whole body; 3. small volume of tissue; 4. head
  • 31.