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MRI QUIZ > Brain Imaging > Flashcards

Brain Imaging Flashcards

1
Q

The right and left optic nerve join at the _____

A

optic chiasm

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2
Q

The medial and lateral rectus muscles are located in what part of the face?

A

eyes.

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3
Q

the vertebral arteries join to form the _____ artery?

A

basilar artery

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4
Q

The pituitary stalk is also called the??

A

infindibulum

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5
Q

The vertebral arteries supply blood to what part of the brain?

anterior or posterior?

A

posterior

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6
Q

The ICA supplies blood to what part of the brain?

The anterior or the posterior brain?

A

anterior

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7
Q

What level of the spine is the carotid bifurication located?

A

C3-C4

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8
Q

What part of the head does the external carotid artery supply?

A

the face

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9
Q

Is the MRA COW exam considered intracranial arterial imaging or extracranial??

think about where its located

A

intracranial.

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10
Q

The ICA is located next to the pituitary on coronal imaging of the brain.

True or False

A

TRUE :) Its the black spot next to the pituitary

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11
Q

ON a dual inversion recovery axial image, the white matter is ____ and the gray matter is ___

dark or hyperintense?

A

white matter- darker

gray matter- the lighter one

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12
Q

Whats the difference in the lentiform nucleus and the caudate nucleus?

A

f

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13
Q

What are the four lobes of the brain?

A

frontal, parietal lobe, temporal, and occipital

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14
Q

The nasion landmark used for brain imaging is another word for glabella region

A

True

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15
Q

Diffusion imaging is

the thermally induced motion of water molecules in tissues

A

True

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16
Q

The measurement of the rate of water diffusion used in called ___ motion

A

brownian

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17
Q

A selectable parameter in DWI is the ____ value

A B or C

A

B- Value.

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18
Q

If the patient has a POSITIVE bleed on their Diffusion, what will it look like on both the ADC and the DWI

A

Dark on the ADC and bright on the DWI.

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19
Q

If someone has a stroke on the diffusion, will they have a high B-Value or low B-value on the image?

A

HIGH B-value aka high signal.

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20
Q

Contrast in Diffusion Weighted Imaging (DWI) depends on the degree to which molecular mobility
is impaired (water restriction), the sensitivity of the sequence to Brownian motion, and the
direction of water diffusion.

A

True

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21
Q

The hippocampus is best seen in a coronal image or an axial?

A

coronal

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22
Q

Where is the hippocampus located?

A

in the medial temporal lobe.

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23
Q

If someone has medial temporal lobe epilipsy, this could mean they have damage to the hippocampus

True or False?

A

True

24
Q

When imaging for Arnold-Chiari, what slice orientation is most optimal?

Sag axial or coronal?

A

Sagital, We like to be able to see the downward descent of the cerebral tonsils.

25
Q

Syrinx in the spine are associated with what malformation of the brain?

A

Chiari

26
Q

A CSF flow study (Cine) MRI is often used with patients diagnosed with Chiari Malformation

A

True

27
Q

If someone has an abnormal prolactin level, what kind of tumor do you think we should suspect?

A

pituitary tumor

28
Q

Why is it so important to scan the pituitary really fast after GAD?

A

The pituitary always looks enhanced and the tumors appear as not enhanced.

29
Q

If someone has Bell’s Palsy, this is a facial paralysis resulting from a dysfunction of the ____ nerve which resulst in the inability to contraol facial muscles

A

Cranial nerve VII (or just the facial nerve.

30
Q

MS refers to “scars or lesions” especially seen in the ____ matter of the brain and the ____ cord.

A

White matter and spinal cord. Both are composed mainly of myelin. Which is what is damaged in ppl with MS.

31
Q

What are some indications of MS (multiple Sclerosis?)

A

numbness, tingling, balance problem, speech problems, visual problems such as optic neuritis, and fatigue.

32
Q

What type of imaging is BEST for seeing MS lesions?

A

Sagittal Flair and Axial Flair.

33
Q

The vertebral arteries branch from the _____ arteries to form the ____ artery

A

Vertebral arteries branch from subclavian artery to form the basilar artery.

34
Q

The vertebral arteries enter the transverse foramen from C6-C1 then through the foramen magnum.

A

True

35
Q

The superior sagittal sinus is located along the margin of the falx cerebri.

True or False

A

True. This is at the midline of the brain.

36
Q

What is the insular cortex responsible for?

A

perception, motor control, self awareness, cognitive function, and interpersonal experience. We have one of these in each hemisphere.

37
Q

What does the olfactory nerve do and where is it located?

A

located near ethmoid bone, and helps smell from nasal mucosa?

on image, itll be kinda in the middle of where nose would be. makes sense

38
Q

What does the optic nerve do and where is it located?

A

retina/ optical canal, helps with vision from retina

39
Q

What does the oculomotor nerve do and where is it located?

A

located at midbrain to orbital fissure, it helps w motor function from superior to infer and medial rectus muscles ( so near the eye)

lateral and anterior to thalmus

40
Q

What does the trochlear nerve do and where is it located?

A

located in posterior midbrain to orbital fissure, helps with motor function to superior oblique that directs gaze inferior to lateral.

in posterior area adjacent to thalmus.

41
Q

What does the trigeminal nerve do and where is it located?

A

from pons to foramen ovale and it is in charge of facial sensation from forehead, scalp to mouth, lip, anterior tongue

42
Q

What does the abducen nerve do and where is it located?

A

located from pons to superficial orbital fissure, is control to motor to lateral rectus and controls the lateral gaze

43
Q

What does the facial nerve do and where is it located?

A

from pons to submandibular internal auditory meatus/facial canal.

it motor to muscles to control facial expression, and taste to anterior tongue

44
Q

What does the vistibulucochlear nerve do and where is it located?

A

located in vestibular ganglion to internal auditory meatus, in charge of vestibular sensation from semicircular ducts

45
Q

What does the glossopharyngealnerve do and where is it located?

A

medulla/superior and inferior ganglion to the jugular foramen

controls swallowing, parotid gland, taste from posterior tongue.

46
Q

What does the vagus nerve do and where is it located?

A

from medilla to jugular foramen

motor to pharynx, larynx, taste from epiglottis palate

47
Q

What does the spinal accessory nerve do and where is it located?

A

in spinal cord, motor to trapezius and sternocleidomastoid

48
Q

What does the hypoglossal nerve do and where is it located?

A

from medulla to hypoglossal canal, motor to intrinsic and extrinsic muscles of tongue.

near spinal cord and cerebellum

49
Q

A vestibular Schwannoma, often called an

A

Acoustic Neuroma

50
Q

Diplopia, commonly known as

A

double vision

51
Q

What does TMJ stand for?

A

temporomandibular joint

52
Q

In the TMJs, the articular discs lie between the mandibular condyle and the mandibular fossa.

A

True

53
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

IACS ( i think of acoustic guitar is something I can “HEAR” therefore the IACS

54
Q

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

A

MS

55
Q

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

A

true

MRI QUIZ (10 decks)

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