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DI 2

  1. Bone signal
    Bone bruise
  2. eDema
    inflammation of bone or soft tissue (tendinopathy)
  3. soft tissue
    disorders of synovium, fat pad, bursa, tendinopathy
  4. Disc bulge
    • Circumferential enlargement
    • Little/no clinical significance
  5. Protrusion
    Bulge <3mm
  6. Herniation
    Bulge >3 mm
  7. Extrusion
    • Nucleus pierces annulus
    • Irreducible
    • Gets better on own or with discectomy
  8. MRI advantages
    • 1. multiple planes
    • 2. no known health hazards
    • 3. Good contrast for inflammation
    • 4. Good for soft tissue
    • 5. Good for neurologic tissue
  9. MRI disadvantages
    • 1. Expensive
    • 2. claustrophobic
    • 3. limited availability
    • 4. bad for bone trauma compared to CT
  10. MRI contraindications
    • 1. pacemaker
    • 2. Iron intracranial clip
    • 3. non iron metal cause distortion
    • 4. cochlear implant
    • 5. large tattoos
    • 6. 1st trimester
  11. MRI red flags
    • 1. incontinence
    • 2. pain below knee
    • 3. constitutional symptoms
    • 4. major trauma
    • 5. Hx of CA
    • 6. unrelenting agony
    • 7. pain worse at night
    • 8. pain > 6 wks age <18 or >50
  12. CT scan slices
    • Thin: less clarity and more radiation
    • Good to get tissues out of the way (viscera)
  13. CT white vs gray
    • Increase density = increase brightness
    • Bone: white
    • Water: gray
    • Fat: black
  14. CT w/ contrast
    Adds iodine to see structures w/ high blood flow
Author
jld15
ID
321426
Card Set
DI 2
Description
DI 2
Updated

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