Head and Neck Flashcards Preview

MRI Review Part B > Head and Neck > Flashcards

Flashcards in Head and Neck Deck (137):
1

Figure B 1 was acquired in the ____plane

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sagital imaging plane

2

Figure B 1 is an example of a ____ weighted image

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T 1 weighted image

3

Figure B 1 is likely to be acquired with ____TR _____TE

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short TR and short TE

4

Figure B 1 arrow A is pointing to

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superior sagittal sinus

5

Figure B 1  the tissue indicated by arrow A is made up primarily of 

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flowoing blood

6

Figure B 1  arrow B is pointing to

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parietal lobe

7

Figure B 1  the tissue indicated by arrow B is made up primarily of

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gray matter

8

Figure B 1  arrow C is pointing to

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frontal lobe

9

Figure B 1 arrow D is pointing to 

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Genu of the corpus callosum

10

Figure B 1  the tissue indicated by arrow D is primarily 

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white matter

11

Figure B 1  arrow E is pointing to

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thalamus

12

Figure B 1  arrow F is pointing to

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optic chiasm

13

Figure B 1  arrow G is pointing to

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pituitary gland

14

Figure B 1  arrow H is pointing to

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pons

15

Figure B 1  arrow H is pointing to a structure that is one complonent of the brainstem.  the components that make up the brainstem include

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Pons

medulla 

midbrain

16

the components that make up the basil ganglia include

caudate nucleus

lentiform nucleus

thalamus

17

components that make up the circle of willis

anterior cerebral arteries

posterior cerebral arteries

anterior communicating artery

posterior communicating arteries

18

components that make up the diencep[halon

hypothalamus

hyperthalamus

thalamus

19

Figure B 1  arrow I is pointing to

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subcutaneous fat

20

Figure B 1  arrow J

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anterior horn of the lateral ventricle

21

Figure B 1  tissue indicated by arrow J

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cerebrospinal fluid

CSF

22

Figure B 1  arrow K

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splenium of the corpus callosum

23

Figure B 1  arrow L

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cerebral aquesuct

24

Figure B 1  tissue indicated by arrow L 

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CSF

25

Figure B 1  arrow M

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fourth ventricle

26

Figure B 1  tissue indicated by arrow M

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CSF

27

Figure B 1  arrow N

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28

Figure B 1  arrow O

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spinal cord

29

Figure B 1  tissue indicated by arrow O

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gray matter

30

likely that Figure B 1  was acquired with 

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head transmit/receive coil

31

the best view for the base of the tongue and epiglottis is the

sagittal

32

to optimize brain imaging when evaluating patients for metastatic disease and FDA approved contrast agent can be administered

with single dose followed by rapid imaging

33

the patient with a history of seizures can be imaged using cardiac gating

to minimize pulsitile flow motoin artifact in the temporal lobe

34

the best view to evaluate patients with seizures is

coronal

35

when a patient arrives at the imaging center with a cranial scar the technologist should

screen the patient, their Dr and or family to find out what tyupe of surgery they have had

36

when scanning patients to rule out brain tumors, the weithed images acquired to evaluate the extent of the lesion after injection of gadolinium are

T1

37

when imaging a patient with decreased consciousness an area of high signal intensity is noted on both the T1 and T2 weighted images.  the type of lesion is likely to be

hemorrhage

methemoglobin

38

to best visulaize the pituitary gland in MRi the optimal planes for high resolution T1 weighted images are

sagittal and coronal

39

for a patient with a suspected pituitary microadenoma contrast is injected and imaging is performed

rapidly because lesions have low signal intensity compated to the enhanced pituitary gland

40

the optimal plane for high resolution T1 weighted images of the internal auditory canals include

axial

coronal

41

when imaging the brain of a child under 1 yr of age, since the brain is not fully developed or myelinated, the BEST visualization of gray and white matter differences is demonstrated on ______whereby white matter is hyperintense to gray matter

inversion recovery

42

typical brain protocols consist of

Sagittal T1 SE

Axial T2 FSE

axial FLAIR

axial diffusion

43

figure B 2 was acquired in the 

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axial plane

44

figure B 2 is an example of a 

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spin (proton) density weighted image

45

figure B 2 arrow A

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cerebral cortex

46

figure B 2 arrow A is pointing to a structure composed of tissue made uip primarily of

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gray matter

47

figure B 2 arrow B

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genu of the corpus callosum

48

figure B 2 structure arrow B is made up of 

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white matter

49

figure B 2 arrow C

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caudate nucleus

50

figure B 2 structure arrow C is made up of

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gray matter

51

figure B 2 arrow D

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internal capsule

52

figure B 2 structure arrow B is made up of

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white matter

53

likely figure B 2 was acquired with a 

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long TR and short TE

54

figure B 2 arrow E

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lentiform nucleus

55

figure B 2 arrow F

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thalamus

56

figure B 2 arrow G

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right, posterior horn of the lateral ventricle

57

figure B 2 arrow H

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splenium of the corpus callosum

58

on a short TR/TE spin echo (or FSE) imaging sequences white matter appears

hyperintense to gray matter

59

the craniual nerves running through the internal auditory canal are

 

VII and VIII

60

the ACR guidelines for brain imaging suggest that the minimum imaging procedure should include a three plane locallizer and

sagittal T1

axial T2

axial PD or FLAIR

diffusion

61

figure B 3 was acquired in (plane)

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axial

62

typical diffusion images (figure B 3) are acquired with a B value of

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1000ms

63

figure B 3 arrow A

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frontal lobe of the brain

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figure B 3 arrow B known as 

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sylvian fissure

latteral fissure

middle cerebral artery

65

figure B 3 arrow C 

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third ventricle

66

figure B 3 arrow D

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posterior horn of the lateral ventricle

67

on a typical diffusion image (figure B 3) the high signal indicated by arrow E represents

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early (hyperacute) infarct

68

figure B 3 high signal in the right posterior portion of the brain is visualized on the diffusion image but not the FLAIR imagebecause

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new stroke has restricted molecular diffusion

69

for the most brain imaging procedures the patient is positioned ______ and centered for a landmark at the _____

supine

nasion

70

for the evaluation of a patient with tinnitus images should be centered at the level of the 

external auditory meatus

71

for optimal imaging of the thyroid gland patients are positioned

supine and local coils are placed on the anterior neck

72

figure B 4 was acquired in the plane

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coronal

73

figure B 4 is an example of (weighting)

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T2

74

figure B 4 was likely acquired with an SE or FSE acquisition with a 

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long TR and long TE

75

figure B 4 arrow A

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superior sagittal sinus

76

figure B 4 arrow B

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longitudinal fissure

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figure B 4 arrow C

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body of the corpus callosum

78

figure B 4 arrow D

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right anterior horn of the lateral ventricle

79

figure B 4 arrow E

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sylvian fissure

lateral fissure

80

figure B 4 arrow F

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thalamus

81

figure B 4 arrow G

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temporal lobe (hippocampus)

82

figure B 4 arrow H

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tentorium

83

figure B 4 arrow I

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fourth ventricle

84

figure B 4 arrow J

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cerebellum

85

figure B 4 CSF appears bright becasue

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waster has a long T2 relaxatoin time

86

the difference between the images demonstrated in figure B 5 is the

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image on the left shows gadolinium enhancement

87

gadolinium contrast media provides images whereby enhancing structures appear _____ on T1 weighted images

hyperintense

88

tissues with short T1 relaxatoin times (fat and gad) appear____as compared to normal structures on a T1 weighted image

hyperintense

brighter

89

dynamic susceptiblility weighted imaging is performed for the evaluatoin of stroke T2* MR images are acquired before, during and after contrast to provide images whereby normal brain appears ________to brain affected by stroke

hypointense

90

figure B 5 was likely to have been acquired with a SE or FSE using

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short TR and short TE

91

figure B 5 was acquired in the plane

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axial

92

figure B 5 arrow A

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anterior horn of the lateral ventricle

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figure B 5 arrow A tissue is

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CSF

94

figure B 5 arrow B

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septum pellucidum

95

figure B 5 arrow C 

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sylvian fissure

lateral fissure

96

figure B 5 arrow D

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lect lacunar branches of the middle cerebral artery

97

figure B 5 arrow E

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left posterior horn of the lateral ventricle

98

figure B 5 arrow F

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falx cerebri

99

figure B 5 arrow G

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superior sagittal sinus

100

figure B 5 arrow H

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occipital lobe

101

MR images in figure B 6a are displayed with and without contrast.  the images are T1`.  the lesoin on the enhanced image appears bright because gadolinium 

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shortens T1 relaxatoin time

102

the series of nine T2 images figure B 6b are EPI gradient echo sequences acquired before during and after the contrast.  the brain tissue on the enhanced image appears darker because gadolinium 

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shotens the T2 (and T2*) relaxation times

103

the decreased myeliniation found in brains of children under 1 yr old results in a lack of image contrast.  consequently in comparision to scanning adults to achieve T2 weighted images during pediatric brain imaging often requires a 

longer TE

104

when performing an MRA of the cerebral arteries, a saturation band shoujld be placed ______to the axial slices

superior

105

figure B 7 is projected in the plane

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axial

106

acquired by magnetic resonance angiography (MRA) figure B 7 is an example of

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collapsed image

107

figure B 7 arrow A

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right anterior cerebral artery

108

figure B 7 arrow B

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right anterior cerebral artery

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figure B 7 arrow C

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right middle cerebral artery

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figure B 7 arrow D

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anterior communicating artery

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figure B 7 arrow E

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posterior communicating artery

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figure B 7 arrow F

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right posterior cerebral artery

113

figure B 7 arrow G

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left posterior cerebral artery

114

when using MRA to evaluate intracranial vascularity flow within smaller (highervelocity blood flow) can best be demonstrated by

3D TOF MRA

115

when using MRA to evaluate extracranial vascular flow such as that within carotid arteries a recommended technique is

2D TOF MRA

116

when using MRA to evaluate peripheral vascular flow such as that with in arteries of legs, saturation pulses are

placed inferior to the acquired slices

117

the cranial nerve associate with the optic nerve is the 

second cranial nerve

118

standard dose of gadolinium for imaging of the central nervous system is

0.1 mL/mmol

commonly known as cc.mmol

119

the MRA technique that is typically used for the evaluation of venous structures of the head is

PC MRA

120

figure B 8 arrow A

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superior sagittal sinus

121

figure B 8 arrow B

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superior sagittal sinus

122

figure B 8 arrow C

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left transverse sinus

123

figure B 8 arrow D

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right transverse sinus

124

figure B 8 arrow E 

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confluence of sinus

125

figure B 8 arrow F

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sigmoid sinus

126

figure B 8 arrow G

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internal jugular vein

127

figure B 9 arrow A

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internal carotid artery

128

figure B 9 arrow B

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internal carotid artery

129

figure B 9 arrow C

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internal carotid artery

130

figure B 9 arrow D

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external carotid artery

131

figure B 9 arrow E

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vertebral artery

132

figure B 9 arrow F

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common carotid artery

133

figure B 9 arrow G

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subclavian artery

134

the 3D contrast enhanced MRI images of the neck vasculature shown in figure B 9 is acquired in the _plane

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coronal 

135

on the coronal display of the neck vasculature the vertebral arteries are located

medial to the carotid arteries

136

for optimal imaging of the thyroid gland patients are positioned

supine and local coils are placed on the anterior neck

137

contrast media are utilized in CNS imaging for the evaluation of

infection

infarction

inflammation

neoplasm