FSP OMRI Terms and Techs

  1. MRCP stands for?
    - Magnetic Resonance CholangioPancreatography
  2. If MD script mentions Numbness what protocol?
    • - run the Demyelinating protocol
    •      - same as routine w additional scan TRS GE T2*
  3. Paraesthesia
    • - (пэрэсти'жия)
    • - abnormal sensation, typically tingling or pricking
  4. If MD script mentions Paraesthesia what protocol?
    • - run the Demyelinating protocol
    •      - same as routine w additional scan TRS GE T2*

    Paraesthesia - (пэрэсти'жия) abnormal sensation, typically tingling or pricking
  5. If MD script mentions optic neuritis what protocol?
    • - run the Demyelinating protocol
    •      - same as routine w additional scan TRS GE T2*
  6. abnormal sensation, typically tingling or pricking
    Paraesthesia (пэрэсти'жия)
  7. If Trauma what additional brain scan?
    TRS GE T2*
  8. If CVA what protocol?
    • NO Brain-Diffusion
    • Routine + TRS GE T2*
  9. If Pt > 65 what additional brain scan?
    TRS GE T2*
  10. If brain MRI is combined with carotid MRA what additional brain scan?
    TRS DW
  11. If Seizures what additional brain scan?
    COR T2
  12. If Lymes Disease what protocol?
    Brain-Demyelinating protocol w additional TRS GE T2* scan
  13. Protocol for MS?
    Brain-Demyelinating protocol w additional TRS GE T2* scan
  14. TIA
    • Transient Ischemic Attack
    • - stroke that lasts only a few minutes
  15. If TIA what protocol?
    • Brain-Diffusion Weighted Imaging
    • TIA - Transient Ischemic Attack
  16. stroke that lasts only a few minutes
    • TIA - Transient Ischemic Attack
    • - stroke that lasts only a few minutes
  17. If brain infarct what protocol?
    Brain-Diffusion Weighted Imaging
  18. Stacks vs. Slices in spine
    If the Rx is for metastatic or infectious related issues but none are seen on the SAG T2 or T1 images...
    - slices should be positioned for a routine exam
  19. NEX
    • - NEX - Number of Excitations
    •    - or
    • - NSA - Number of Signal Averages
    • - how many times each line of k-space data is acquired during the scan
  20. NSA
    • - NSA - Number of Signal Averages
    •    - or
    • - NEX - Number of Excitations
    • - how many times each line of k-space data is acquired during the scan
  21. How to to improve SNR using NSA / NEX?
    • - if we x2 NEX, it will
    •    - increase SNR by 140%
    •       but
    •    - x2 Scan Time
  22. NEX and slice thickness
    - Slice = 4mm
    - SNR = 1
    - NEX = 1
    - Time = 2min

    - if Slice = 2mm (High Res)
    - what will happened with SNR, NEX and Time?
    • If Slice changed form 4mm to 2mm (High Res)
    •    - we'll lose SNR by = 0.49 (49%)
    •    - to compensate SNG, NEX must be 3
    •       - but
    •    - Time will be x3 (6min)
  23. NEX and FOV
    - If FOV decreased...
       - SNR ?
    • FOV↓ - SNR↓
    • To compensate SNR
    •    1) Matrix Size↓ - Image Quality↓
    •    2) NEX↑ - Image Quality↑, but Scan Time↑
  24. NEX and FOV for SAG C-spine or L-spine?
    • NEX = 2
    • FOV = 300-320
  25. If Pt has scoliosis
    2 NEX COR T1
  26. When a patient returns for additional views that require stack in spine?
    DICOM the sag scout
  27. If the Rx is for metastatic or infectious related issues and lesions are seen...
    - stack views should be positioned
  28. CP Angle Tumors
    CPA - Cerebellopontine angle - most common neoplasms in the posterior fossa
  29. Cerebellopontine angle
    • CP Angle Tumors
    • - most common neoplasms in the posterior fossa
  30. Demyelinating Disease
    • - damage to the protective covering (myelin sheath) that surrounds nerve fibers in brain, optic nerves and spinal cord
    • - MS
    • - Lymes
    • - Paraesthesia 
    • - Optic Neuritis
  31. Paraesthesia
    • - Demyelinating Disease
    • - abnormal sensation
  32. Optic Neuritis
    • - Demyelinating Disease
    • - inflammation of optic nerves
  33. Trigeminal Neuralgia
    - chronic pain affects the trigeminal nerve, which carries sensation from the face to the brain
  34. Schwannoma
    - tumor of the tissue that covers nerves
  35. Bells Palsy
    - muscles on one side of your face become weak or paralyzed
  36. abnormal sensation
    Paraesthesia
  37. inflammation of optic nerves
    Optic Neuritis
  38. any condition causing damage to the protective covering (myelin sheath) that surrounds nerve fibers in brain, optic nerves and spinal cord
    Demyelinating Disease
  39. chronic pain affects the trigeminal nerve, which carries sensation from the face to the brain
    Trigeminal Neuralgia
  40. tumor of the tissue that covers nerves
    Schwannoma
  41. muscles on one side of your face become weak or paralyzed
    Bells Palsy
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flashsmilenet
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FSP OMRI Terms and Techs
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FSP OMRI Terms and Techs
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