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Imaging Procedures for MRI > Head and brain > Flashcards

Head and brain Flashcards

1
Q

T or F: Perfusion imaging usually requires a bolus of gadolinium to help visualize the activity of a lesion.

A

true

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2
Q

What sequence would be most helpful in diagnosing MS?

A

Sagittal FLAIR

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3
Q

T or F: Fat saturation techniques are valuable when imaging the orbits post contrast due to the presence of orbital fat

A

true

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4
Q

T or F: Careful timing of post contrast pituitary scans is important because eventually the pituitary gland enhances itself, as well as a microadenoma, if present

A

true

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5
Q

Propellers, Blades, MultiVane, and Jet sequences are performed to:

A

reduce motion artifacts

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6
Q

Which cranial nerve has receptors for the sense of smell?

A

CN I (Olfactory)

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7
Q

The DWI is usually performed with ______________________aligned slices.

A

axial

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8
Q

Contrast is used to assess what

A

tumors
metastases
age of infarct
active MS plaques

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9
Q

Axial slices through the brain are typically aligned with what anatomical structures

A

parallel to the genu and splenium of the corpus callosum

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10
Q

T or F: Closed and open mouth views are performed for TMJs.

A

true

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11
Q

What sequences is known for its sensitivity to magnetic susceptibility?

A

GRE

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12
Q

Alignment for the axial images of the brain, are usually set up on the ________ series of images.

A

sagittal

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13
Q

What is another word for bulging of one or both eyes

A

proptosis

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14
Q

what is a demyelinating disease of the CNS

A

Multiple sclerosis

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15
Q

Indications for and MRA of the Head include :

A

Intracranial vascular assessment of aneurysms and infarcts

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16
Q

Axial slices through the head/brain are prescribed from:

A

inferior to superior

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17
Q

what contributes to the structure of the bony orbit

A

lacrimal, sphenoid, and frontal

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18
Q

Axial images of the orbits are angled with the

A

optic nerve

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19
Q

Which of the following best describes the appearance of acute stroke on an axial DWI?

A

bright

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20
Q

For imaging of the brain, the patient is usually lying ____________on the couch/table

A

supine

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21
Q

T or F: The main source of artifact in the brain is from flow motion of the popliteal artery

A

false

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22
Q

You are performing a pituitary scan. On a sagittal image you are setting up your slices for the coronal slices. Your alignment set up should be __________________.

A

parallel to the sella turcica

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23
Q

T or F: Careful timing of post contrast pituitary scans is important because eventually the pituitary gland enhances itself, as well as a microadenoma, if present.

A

true

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24
Q

When positioning a patient for a head MRI exam, their _____________should be parallel to the couch/table

A

IPL

25
Q

Common sources of artifact for an orbital MR exam include all of the following except:

A

zipper artifact

26
Q

Which cranial nerve provides motor control to the muscles of mastication and relays sensory information from the face and the head

A

5th

27
Q

what would best demonstrate hemorrhage

A

GRE

28
Q

what sequences provides temporal resolution of enhancing lesions and indicates brain activity?

A

perfusion

29
Q

Sagittal TMJ images are angled with

A

perpendicular to the mandibular condyles

30
Q

What sequence can used in placed of TOF imaging

A

MRA and MRV

31
Q

Which sequence is the most important for a stroke victim

A

DWI

32
Q

Which landmark is used for positioning centering/localizing with the red laser light

A

glabella/nasion

33
Q

Which lobe of the brain is scanned for seizure protocol

A

temporal

34
Q

Sagittal slices through the head are prescribed from

A

left to right

35
Q

Setting up the sagittal slices is best and often easiest to be achieved using the _________ series of images of the 3-plane localizer.

A

coronal

36
Q

The b value determines the:

A

amount of diffusion weighting on an image

37
Q

T or F: The FLAIR sequences should only be done pre-contrast due to their T1 weighting.

A

false

38
Q

A DWI is most often acquired using a ____________ sequence.

A

T2 EPI

39
Q

When performing a CSF study image, the sequence will be a made of a _______________slice.

A

sagittal

40
Q

T or F: Coverage for axial slices includes the foramen magnum to the superior surface of the brain

A

true

41
Q

what protocols would include slices through the temporal lobes

A

seizures

42
Q

Which exam may have the most issue if the patient is wearing eye make-up

A

orbits

43
Q

_______________slices are recommended post-contrast for the pituitary gland images

A

thin

44
Q

To image the veins of the head:

A

pre-saturation pulse is placed inferior to the FOV

45
Q

Axial slices prescribed for an orbit exam should be aligned/angled to:

A

to the optic nerve

46
Q

For uncooperative patient, a tech can use a _______________series for rapid imaging

A

SS-FSE T2

47
Q

T or F: There are four ventricles in the brain.

A

TRUE

48
Q

Cranial nerve matching :

I

A

smell

49
Q

Cranial nerve matching :

II

A

vision

50
Q

Cranial nerve matching :

III

A

eye movement

51
Q

Cranial nerve matching :

IV

A

turns eye downward and lateral

52
Q

Cranial nerve matching :

V

A

chewing

53
Q

Cranial nerve matching :

VI

A

turns eye laterally

54
Q

Cranial nerve matching :

VII

A

controls facial expressions

55
Q

Cranial nerve matching :

VIII

A

controls hearing and equilibrium

56
Q

Cranial nerve matching :

IX

A

controls taste

57
Q

Cranial nerve matching :

X

A

slows heart rate

58
Q

Cranial nerve matching :

XI

A

controls the trapezius and SCM

59
Q

Cranial nerve matching :

XII

A

controls tongue movement

Imaging Procedures for MRI (14 decks)

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