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MRI Review Part B > Spine > Flashcards

Flashcards in Spine Deck (57):
1

most spine imaging is performed with the use of

a surface/local coil

2

in patients who have undergone sugery for a herniated disk in the lumbar spine, contrast enhancment can be sued to distinguish recurrent disk from postoperative scar because

disk enhances more slowly than postoperative scar

3

for optimal imaging of the C spine patient positioning and local coil placment are

supine/under the neck to include C1-C7

4

on a 24cm FOV siagittal T spine image that demonstrates a cord compression the vertebral level can be determined by using

a large FOV localizer and counting down from C2

5

in lumbar spine imaging images acquired directly through intervertebral disk spaces can be acquired in the (plane)

oblique 

6

on T1 weighted images of the spine the CSF appears

hypointense to the spinal cord

7

the conus and the cauda equina in adult patients are best demonstrated by any of the following

sagittal T spine

Sagittal L spine

coronal T spine

8

figure B 10 was acquiredin the _____plane

Q image thumb

sagittal

9

figure B 10 is an example of a _____(weighting)

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T1

10

figure B 10 arrow A

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oropharynx

11

figure B 10 arrow B

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anterior arch of C1

12

figure B 10 arrow C

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Dens

13

figure B 10 arrow D

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cervical disk

14

figure B 10 arrow E

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trachea

15

figure B 10 arrow F

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spinal cord

16

figure B 10 arrow G

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vertebral body

17

figure B 10 the vertebral bodies of the C spine can be visualized because

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hydrogen in cortical bone is too tightly bound to be "excited" by the MR process therefore cortical bone appears dark on MR images and outlines the vertebral body

bone marrow contains fat and water and therefore appears bright depending upon the scan parameters used to create the image

18

figure B 10 there is a slight cervical disk herniation at the level of

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C5/C6

19

3D gradient coils on axial views can be used in C spine imaging to provide 

thin contiguios sections of the spine

ability to reformat into any other imaging plane

ability to get either T1, spin density or T2* informatoin by changing the aquisition parameters (TR, TE, flip angle)

20

in complete spine imaging to rule out metastatic lesions of the spinal cord, contrast enhancement can be sued with T 1 weighted images because

metastatic lesions within the cord enhance and normal cord does not

21

 figure B 11 was acquired with a 48cm rectangular FOV, 4 mm slice thickness, and a 512x512 matrix.  A small FOV image that would bear the same spatial resolution is

24 cm FOV, 4 mm slice thickness and 256x256 matrix

22

judging from the SNR on figure B 11 the coil or coils that were most likely used to acquire this image are

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phased array

23

figure B 11 the low signal intensity area (arrows H) that runs superior and inferior but posterior to the spinous process represents

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spinatus tendon

24

figure B 11 was acquired in the ______plane

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sagittal

25

figure B 11 is an example of _______weighting

Q image thumb

T 2

26

figure B 11 arrow A

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Pons

27

figure B 11 arrow B 

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cervical spinal cord

28

figure B 11 arrow C

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T 3

29

figure B 11 arrow D

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interbertebral disk

30

figure B 11 arrow E

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conus medularis

31

figure B 11 arrow F

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cauda equina

32

figure B 11 arrow G

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sacrum

33

figure B 12 was acquired in the ________plane

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sagittal

34

figure B 12 is an example of (weighting)

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T 1

35

figure B 12 could have been acquired with a SE or FSE with 

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short TR and short TE

36

figure B 12 arrow A

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conus medularis

37

figure B 12 arrow B

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ligamentum flavum

38

figure B 12 arrow C

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spinous process

39

figure B 12 arrow D

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anterior longitudinal ligament

40

figure B 12 arrow E

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cauda equina

41

figure B 12 arrow F

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L3/L4 intervertebral disk

42

figure B 12 arrow G

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epidural fat

43

figure B 12 arrow H

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posterior longitudinal ligament

44

figure B 12 arrow I

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L5 vertebral body

45

figure B 12 arrow J

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L5/S1

46

to evaluate the intervertebral disk in the L spine imaging (figure B 13) is generally performed in the _______plane

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off axis oblique plane

47

figure B 13 is an example of a  (weighting)

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T 2

48

figure B 13 wouild have bneen acquired with a SE or FSE with 

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long TR and long TE

49

figure B 13 arrow A

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right common iliac artery

50

figure B 13 arrow B

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right psoas muscle

51

figure B 13 arrow C

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intervertebral disk

52

figure B 13 arrow D

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pedicle

53

figure B 13 arrow E

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spinal canal (with nerve roots)

54

figure B 13 arrow F

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facet joint

zygapophyseal joint

55

figure B 13 arrow G

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lamina

56

figure B 13 arrow H

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spinous process

57

figure B 13 arrow I

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right erector spinae muscle