DI 3

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The flashcards below were created by user jld15 on FreezingBlue Flashcards.


  1. MRI vs CT disc lesions
    • MRI
    • Unless CT has contrast
  2. What can a CT myelogram dx?
    • Excellent pre-op
    • Ruptured disc
    • SC compression
    • Stenosis
    • Intervertebral tumor
    • NR injury
  3. Common causes for stenosis
    • 1. disc lesion
    • 2. spondylolisthesis
    • 3. osteophyte
  4. S/S of stenosis
    • Neurogenic claudication
    • LBP, leg pain when stand and walk (sometimes numbness, weakness, N+T)
    • Okay in flexion
    • If compress cord UMN signs below LOL
  5. CT advantages
    • 1. Good for anatomy and pathology cross section (fx, stenosis, loose body, arthritis)
    • 2. less time
    • 3. less expensive
    • 4. less claustrophobic
  6. CT disadvantages
    • 1. radiation
    • 2. bad for soft tissue
  7. CT search patterns
    • A: Alignment
    • B: Bone density
    • C: cartilage, canal space
    • S: soft tissue
  8. CT alignment
    • 1. Congenital deformity
    • 2. Fx
    • 3. Spur
    • 4. Sublux/dislocations
    • 5. Supernumerary or absent bones
  9. CT bone density
    • 1. loss of density
    • 2. osteophytes
    • 3. reactive sclerosis (certain CAs)
    • 4. appearance of trabeculae – thin, coarsened, smudged
  10. CT Cartilage
    • Joint space
    • Subchondral bone (osteophytes)
    • Epiphyseal plate fx
  11. Salter Harris Fx
    • Shaft and head will be radio opaque
    • Epiphyseal growth plate: radiotranslucent bc has cartilage in it
    • Fx in growth plate
    • May need surgery to prevent arrest of bone growth
  12. CT Soft tissue
    • Periostium, bone CA
    • Swollen tissue
  13. How does a bone scan work?
    Takes advantage that injured one is trying to rebuild and contrast is absorbed at site of bone injury
  14. Bone scan indications
    • 1. high risk CA pts (breast, lung, prostate, kidney)
    • 2. after radiation
    • 3. when other DI neg
    • 4. Paget’s disease and other metabolic bone diseases (OM, rickets)

Card Set Information

Author:
jld15
ID:
321427
Filename:
DI 3
Updated:
2016-06-26 02:06:15
Tags:
DI
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DI 3
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