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msk-derm > Imaging > Flashcards

Imaging Flashcards

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1
Q

What are the advantages of conventional radiography for imaging of MSK?

A
  • widely available
  • reproducible
  • inexpensive
  • minimal ionizing radiation
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2
Q

What are the disadvantages of conventional radiography for imaging of MSK?

A
  • fractures may be occult if not displaced
  • importance of more than 1 view
  • complex bones and superimposed structures
  • soft tissues are poorly evaluated with x-ray
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3
Q

What is conventional radiography most useful for in MSK?

A

Evaluation of bones mostly, not as good at imaging soft tissues

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4
Q

What are the main uses of CT in MSK?

A

More detailed evaluation of fractures, preoperative planning, assessment of healing

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5
Q

What are the main advantages of CT for MSK?

A
  • widely available, quick imaging
  • good spatial resolution
  • with or without contrast
  • can reformat images
  • alternative for MRIs if they are contraindicated
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6
Q

What are the main limitations of CT for MSK?

A
  • ionizing radiation
  • cost
  • soft tissue evaluation is inferior to MRI
  • metal causes artifact
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7
Q

What are the main uses of MRI in MSK?

A

Best at evaluation of joints and soft tissues

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8
Q

What are the main advantages of MRI for MSK?

A
  • high contrast resolution
  • can see changes earlier than x-ray
  • no radiation
  • widely available
  • many techniques
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9
Q

What are the main disadvantages of MRI for MSK?

A
  • expensive
  • not patient friendly
  • variable quality
  • metal causes artifacts
  • many contraindications
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10
Q

What are the main uses of fluoroscopy in MSK?

A

Used in procedures or for dynamic imaging

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11
Q

What are the main advantages of fluoroscopy for MSK?

A
  • widely available

- dynamic imaging

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12
Q

What are the main disadvantages of fluoroscopy for MSK?

A
  • ionizing radiation to patient and operator
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13
Q

What are the main uses of ultrasound for MSK?

A

Good for superficial soft tissue structures (tendons, muscles), some ability to evaluate bone surfaces

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14
Q

What are the main advantages of ultrasound for MSK?

A
  • patient friendly
  • reproducible
  • small/moderate expense
  • widely available
  • dynamic imaging
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15
Q

What are the main disadvantages of ultrasound for MSK?

A
  • user/operator dependent

- cannot go through cortical bone

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16
Q

What is dual x-ray absorptiometry?

A

A type of X-ray that evaluates bone density relative to others of the same sex/ethnicity/demographics

17
Q

What is bone scintigraphy?

A

A sensitive but nonspecific way to evaluate bone density

18
Q

What is bone scintigraphy sensitive for?

A

Conditions with bone turnover and increased blood flow, specifically fracture, infection, and blastic metastases

19
Q

What is an arthrography used for?

A

A technique to introduce contrast into joints to evaluate joints

20
Q

What is myelography used for?

A

A technique to introduce contrast into the central canal of bone

21
Q

What imaging techniques are used for chronic back pain in adults?

A
  • plain radiographs

- MRI

22
Q

What imaging techniques are used for chronic back pain in children?

A
  • plain radiographs

- nuclear medicine exam

23
Q

What imaging techniques are used for acute back pain?

A
  • plain radiographs

- consider CT or MRI

24
Q

What imaging techniques are used for neck pain?

A
  • plain radiographs
25
Q

What imaging techniques are used for joint pain?

A

Plain radiographs, consider MRI

26
Q

What imaging techniques are used for neoplasm?

A

Plain radiograph, MRI with contrast, CT, nuclear medicine study

27
Q

What imaging techniques are used for occult fractures?

A

Plain radiographs, CT/MRI/nuclear medicine if x-ray is normal

28
Q

What imaging techniques are used for osteomyelitis in diabetic patients?

A
  • plain radiograph
  • MRI
  • nuclear medicine study
29
Q

What imaging techniques are used for osteomyelitis in non-diabetic patients?

A
  • plain radiograph

- MRI with contrast

msk-derm (41 decks)

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