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MRI Imaging Q > Brain imaging > Flashcards

Brain imaging Flashcards

1
Q

: If a brain exam is being performed and the request is made to rule out acoustic neuroma, a protocol with thin cuts through the _________ should be performed

A

: Internal Auditory Canals

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2
Q

The _____________ imaging plane would be the most optimal slice orientation for evaluation of Arnold Chiari Malformation and its inferior cerebellar tonsillar herniation.

A

sagittal

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3
Q

A FLAIR sequence with a long TI is utilized to

A

null the signal from CSF

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4
Q

: If a brain exam is being perfomed and the request is made to rule out microadenoma due to elevated prolactin levels, a protocol with thin cuts through the ____________ should be performed.

A

Pituitary gland

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5
Q

: If a brain exam is being perfomed and the request is made to rule out globe tumor due to symptoms of diplopia, a protocol with thin cuts through the ____________ should be performed

A

Orbits/Optic Nerves

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6
Q

MR findings of a low volume corpus callosum and increased white matter lesions can be indicative of a diagnosis of:

A

Multiple Sclerosis

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7
Q

: If a brain exam is being performed and the request is made to evaluate cranial nerves VII and VIII due to the patient’s symptoms of tinnitus, a protocol with thin cuts through the ____________ should be performed

A

Internal Auditory Canals

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8
Q

: How many cranial nerves are there?

A

12

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9
Q

: To best visualize the pituitary gland in MRI, high resolution T1 weighted images in the __________ planes pre and post contrast are optimal.

A

Sagittal and Coronal

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10
Q

: ____________ is a condition in which part of the cerebellar tonsil is displaced through the foramen magnum

A

Chiari Malformation

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11
Q

: When imaging a hemorrhagic infarct in the brain, which pulse sequence would demonstrate the magnetic susceptibility effects better?

A

Gradient echo

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12
Q

: _______ sequences are performed to suppress CSF (cerebro-spinal fluid)and aid in the detection of demyelination

A

FLAIR

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13
Q

The brainstem includes all of the following EXCEPT

A

Putamen

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14
Q

On a T2 weighted image, CSF appears bright because it has a __________ relaxation time.

A

Long T2

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15
Q

The stalk of the pituitary gland is also known as the:

A

Infundibulum

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16
Q

The right and left optic nerve join at the:

A

Optic chiasm

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17
Q

: The medial and lateral rectus muscles are located in the

A

eye

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18
Q

What scan plane would be optimal for visualization of the hippocampus?

A

Coronal oblique

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19
Q

Which dural venous sinuses drain from the confluence of sinuses (by the internal occipital protuberance) to the mastoid portion of the temporal

A

Transverse sinuses

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20
Q

Which structure lies adjacent to the head of the caudate nucleus

A

Anterior horn of the lateral ventricle

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21
Q

In the TMJ’s, the articular disc lies between what two anatomical structures

A

: Mandibular fossa and mandibular condyle

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22
Q

The insular cortex is primarily responsible for:

A

Motor control; cognitive function

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23
Q

Which cranial nerve is responsible for Bell’s Palsy?

A

Cranial nerve VII (the facial nerve)

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24
Q

To accurately depict the VII and VIII cranial nerves, the patient would centered at the level of the:

A

External auditory meatus

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25
Q

The dural venous sinuses that drain into the internal jugular vein are the:

A

Sigmoid sinus

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26
Q

When positioning a patient for a brain MRI, the centering should be placed at what anatomical landmark?

A

Nasion

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27
Q

If the third ventricle is dilated, but the fourth ventricle is not, there would then be pathology associated with:

A

: Aqueduct of Sylvius

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28
Q

A depression in the base of the skull where the pituitary gland is located is called the ___________.

A

Sella turcica

29
Q

Which fissure divides the frontal and parietal lobes from the temporal lobes?

A

Sylvian fissure

30
Q

The __________________ runs the length of the falx cerebri.

A

Superior sagittal sinus

31
Q

How do the vertebral arteries enter the cranium?

A

Foramen magnum

32
Q

What would be the most useful sequence for evaluation of an acute stroke?

A

Diffusion weighted sequence

33
Q

When performing an MRI to confirm a suspected pituitary microadenoma, contrast is injected and imaging is performed

A

Rapidly because lesions appear as low signal intensity compared to the enhanced pituitary gland

34
Q

When performing MRI to rule out brain tumors, the weighted images acquired to evaluate the extent of lesion involvement, after injection of gadolinium, are

35
Q

Letter A in Image 184 is pointing to which cranial nerve?

A

Optic nerve (CN II)

36
Q

: Letter B in Image 184 is pointing to:

A

Basilar artery

37
Q

Letter C in Image 184 is pointing to which cranial nerve?

A

Trochlear nerve (CN IV)

38
Q

Letter D in Image 184 is pointing to:

A

Oculomotor nerve (CN III)

39
Q

Letter E in Image 184 is pointing to

A

Trochlear nerve (CN IV)

40
Q

Letter F in Image 184 is pointing to which cranial nerve?

A

Oculomotor nerve (CN III)

41
Q

Letter G in Image 184 is pointing to which cranial nerve?

A

Optic nerve (CN II)

42
Q

: Letter H in Image 184 is pointing to which cranial nerve?

A

Olfactory nerve (CN I)

43
Q

: Letter J in Image 184 is pointing to which cranial nerve?

A

Olfactory nerve (CN I)

44
Q

Letter A in Image 185 is pointing to which cranial nerve?

A

Abducens nerve (CN VI)

45
Q

: Letter B in Image 185 is pointing to

A

Abducens nerve (CN VI)

46
Q

: Letter C in Image 185 is pointing to which cranial nerve?

A

Trigeminal nerve (CN V)

47
Q

Letter D in Image 185 is pointing to which cranial nerve?

A

Trigeminal nerve (CN V)

48
Q

Letter E in Image 185 is pointing to which cranial nerve?

A

Trochlear nerve (CN IV)​

49
Q

Letter F in Image 185 is pointing to which cranial nerve?

A

Trochlear nerve (CN IV)

50
Q

Letter A in Image 186 is pointing to:

51
Q

: Letter B in Image 186 is pointing to which cranial nerve:

A

Facial nerve (CN VII)

52
Q

Letter C in Image 186 is pointing to:

A

Semicircular canal

53
Q

: Letter D in Image 186 is pointing to which cranial nerve?

A

Vestibulocochlear nerve (CN VIII)

54
Q

: Letter E in Image 186 is pointing to which cranial nerve?

A

Vestibulocochlear nerve (CN VIII)

55
Q

Letter F in Image 186 is pointing to which cranial nerve?

A

Facial nerve (CN VII)

56
Q

: Letter A in Image 187 is pointing to which cranial nerve?

A

Vagus nerve (CN X)

57
Q

Letter B in Image 187 is pointing to which cranial nerve?

A

Glossopharyngeal nerve (CN IX)

58
Q

Letter C in Image 187 is pointing to which cranial nerve?

A

Glossopharyngeal nerve (CN IX)

59
Q

Letter F in Image 188 is pointing to which cranial nerve?

A

Hypoglossal nerve (CN XII)

60
Q

Letter J in Image 188 is pointing to which cranial nerve?

A

Hypoglossal nerve (CN XII)

61
Q

The green arrows in Image 165 point to what pathology?

A

Vestibular schwannoma

62
Q

The green arrows in Image 163 point to what pathology?

A

Pituitary tumor

63
Q

The red arrow in Image 160 points to what pathology?

A

Chiari malformation

64
Q

The blue arrows in Image 159 point to what pathology?

65
Q

The red arrows in Image 159 point to what pathology?

A

Chiari malformation

66
Q

The three images in the top left quadrant of Image 159 identify what pulse sequence?

A

T2 sagittal

67
Q

The three images in the top right quadrant of Image 159 identify which MRI pulse sequence?

A

T1 sagittal

68
Q

The pathology identified by the blue arrows in Image 159 is a syrinx, displaying T1 _____________ signal and T2 _______________ signal relative to the spinal cord.

A

Hypointense; hyperintense

MRI Imaging Q (5 decks)

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