SM_226a: MSK Imaging Flashcards Preview

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Flashcards in SM_226a: MSK Imaging Deck (45)
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1

_____ is initial test of choice to assess the MSK system

Radiography is the initial test of choice to assess the MSK system

2

Advantages of radiography are that it is _____, _____, and _____

Advantages of radiography are that it is inexpensive, reproducible, and has minimal radiation

3

Limitations of radiography are _____, _____, and _____

Limitations of radiography are occult fractures, limited evaluation of soft tissues, and the need to get at least 2 views

4

Radiography is used for evaluation of _____, _____, and _____

Radiography is used for evaluation of trauma, infection, and arthritis

 

(can indicate mechanism of injury and suggest underlying soft tissue injury)

5

Radiography can suggest _____

Radiography can suggest underlying soft tissue injury

6

CT is excellent for answering a specific question, such as _____, _____, and _____

CT is excellent for answering a specific question, such as preoperative planning, fracture detail, and occult fracture

7

Advantages of CT are _____, _____, _____, and _____

Advantages of CT are superior spatial resolution, ability to obtain multi-planar reformatted images, wide availability, and rapid exam time

 

(better resolution for bone than soft tissue)

8

Limitations of CT are _____, _____, and _____

Limitations of CT are moderately expensive, ionizing radiation, and artifact with metal

9

MRI is superior for evaluation of _____, _____, and _____

MRI is superior for evaluation of joints, soft tissue, and cartilage

10

Advantages of MRI are _____, _____, and _____

Advantages of MRI are superior contrast resolution, no radiation, and multi-planar imaging

11

Limitations of MRI are _____, _____, _____, and _____

Limitations of MRI are expensive, not patient friendly, longer scan times, and contraindications

12

Absolute contraindications to MRI are _____, _____, _____, and _____

Absolute contraindications to MRI are pacemakers, stimulators, metal in the orbit, and weight limit

13

Relative contraindications to MRI are _____ and _____

Relative contraindications to MRI are aneurysm clips and metal

14

Ultrasound is excellent for viewing _____, such as _____, _____, and _____

Ultrasound is excellent for viewing superficial soft tissues, such as tendons, ligaments, and nerves

15

Advantages of ultrasound are _____, _____, and _____

Advantages of ultrasound are patient friendly, dynamic imaging, and inexpensive

 

(no radiation, no contrast)

16

Limitations of ultrasound are _____ and _____

Limitations of ultrasound are user dependent and limited evaluation of bone

17

Dual X-ray absorptiometry is used to measure _____ and detect _____

Dual X-ray absorptiometry is used to measure bone density and detect osteoporosis and fracture risk 

18

Dual X-ray absorptiometry is used to image the _____ and _____

Dual X-ray absorptiometry is used to image the lumbar spine and proximal femur

19

Advantages of dual X-ray absorptiometry are _____, _____, and _____

Advantages of dual X-eray absorptiometry are short exam time, widely available, and inexpensive

20

Limitations of dual X-ray absorptiometry are _____ and _____

Limitations of dual X-ray absorptiometry are overlying calcifications and compression fractures

21

T-score of a DXA study is the difference between _____ and _____

T-score of a DXA study is the difference between the bone mineral density of patient and standard young adult population

22

Describe the scroing of a DXA study

DXA study

T-score: difference between the bone mineral density of patient and standard young adult population

  • < 1 SD: normal
  • 1-2.4 SD: osteopenia
  • >2.5 SD: osteoporosis
  • >2.5 + ≥1 low-trauma fractures: severe osteoporosis

23

Bone scintigraphy is _____ but not _____

Bone scinitigraphy is sensitive but not specific 

 

(normal is usually normal, further imaging to determine the specific pathology)

24

Bone scintigraphy provides _____

Bone scintigraphy provides physiologic information

25

Limitations of bone scintigraphy are _____ and _____

Limitations of bone scintigraphy are radiation and time intensive (4-6 hours/study)

26

Fluoroscopy is most commonly used _____

Fluoroscopy is most commonly used for/during procedures

27

Advantage of fluoroscopy is _____

Advantage of fluoroscopy is dynamic imaging

28

Limitation of fluoroscopy is _____

Limitation of fluoroscopy is radiation to patient and operator

29

Describe image guided procedures

Image guided procedures

  • Biopsy: bone or soft tissue
  • Arthrography: evaluation of joints and supporting structures
  • Myelogram: dynamic imaging, evaluation of bone
  • Therapy: corticosteroid injections, calcific tendinitis lavage, vertebroplasty, thermal ablation

30

Image guided biopsy is a safer alternative to _____

Image guided biopsy is a safer alternative to surgical/open biopsy (outpatient procedure)

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