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What protocol should be performed to rule out acoustic neuroma?
A protocol with thin cuts through the Internal Auditory Canals.
What imaging plane is optimal for evaluating Arnold Chiari Malformation?
Sagittal.
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Acoustic Neuroma Imaging Protocol

What protocol should be performed to rule out acoustic neuroma?

A protocol with thin cuts through the Internal Auditory Canals.

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Arnold Chiari Malformation Evaluation

What imaging plane is optimal for evaluating Arnold Chiari Malformation?

Sagittal.

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FLAIR Sequence in MRI

What is the purpose of a FLAIR sequence with a long TI?

To null the signal from CSF.

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Pituitary Gland Imaging

What protocol should be performed to rule out microadenoma due to elevated prolactin levels?

A protocol with thin cuts through the Pituitary gland.

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Cranial Nerve Identification

Where is the hippocampus located?

In the medial temporal lobe of the brain.

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Dural Venous Sinuses

What runs the length of the falx cerebri?

Superior sagittal sinus.

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Cranial Nerve Identification

Which muscles are located in the eyes?

Medial and lateral rectus muscles.

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Cranial Nerve Identification

Which cranial nerve is indicated by Letter A in Image 185?

Abducens nerve (CN VI).

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Cranial Nerve Identification

What cranial nerve is indicated by Letter F in Image 186?

Facial nerve (CN VII).

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Cranial Nerve Identification

What pathology do the green arrows in Image 165 point to?

Vestibular schwannoma.

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Cranial Nerve Identification

What is the correct identification for Letter D in Image 184?

Trochlear nerve (CN IV).

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Pituitary Gland Imaging

What is the depression in the base of the skull where the pituitary gland is located called?

Sella turcica.

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Cranial Nerve Identification

Which cranial nerve is indicated by Letter E in Image 184?

Trochlear nerve (CN IV).

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MRI Techniques for Stroke

Which pulse sequence is best for demonstrating magnetic susceptibility effects in a hemorrhagic infarct?

Gradient echo.

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Cranial Nerve Identification

What cranial nerve is indicated by Letter D in Image 186?

Vestibulocochlear nerve (CN VIII).

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Cranial Nerve Identification

What cranial nerve is indicated by Letter F in Image 185?

Trochlear nerve (CN IV).

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MRI Techniques for Stroke

What pulse sequence is identified by the three images in the top left quadrant of Image 159?

T2 sagittal.

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Cranial Nerve Identification

What cranial nerve is indicated by Letter B in Image 186?

Facial nerve (CN VII).

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Cranial Nerve Identification

What cranial nerve is indicated by Letter D in Image 185?

Trigeminal nerve (CN V).

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Cranial Nerve Identification

What pathology do the blue arrows in Image 159 point to?

Syrinx.

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Cranial Nerve Identification

What lies adjacent to the head of the caudate nucleus?

Anterior horn of the lateral ventricle.

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Cranial Nerve Identification

Where should the centering be placed when positioning a patient for a brain MRI?

Nasion.

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Cranial Nerve Identification

How many cranial nerves are there?

12.

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Cranial Nerve Identification

Which cranial nerve is associated with the cochlea?

Vestibulocochlear nerve (CN VIII).

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Cranial Nerve Identification

What cranial nerve is indicated by Letter B in Image 185?

Abducens nerve (CN VI).

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Arnold Chiari Malformation Evaluation

What pathology does the red arrow in Image 160 indicate?

Chiari malformation.

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Cranial Nerve Identification

What imaging plane is best for viewing the hippocampus?

Coronal oblique imaging plane.

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Dural Venous Sinuses

Which dural venous sinus drains into the internal jugular vein?

Sigmoid sinus.

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Cranial Nerves Imaging

What protocol should be performed to evaluate cranial nerves VII and VIII due to tinnitus?

A protocol with thin cuts through the Internal Auditory Canals.

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Cranial Nerve Identification

What structure is indicated by Letter B in Image 184?

Basilar artery.

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Cranial Nerve Identification

Which cranial nerve is indicated by Letter F in Image 188?

Hypoglossal nerve (CN XII).

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Pituitary Gland Imaging

What pathology do the green arrows in Image 163 point to?

Pituitary tumor.

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Cranial Nerve Identification

At what anatomical landmark should a patient be centered to accurately depict cranial nerves VII and VIII?

External auditory meatus (EAM).

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Globe Tumor Assessment

What protocol should be performed to rule out globe tumor due to symptoms of diplopia?

A protocol with thin cuts through the Orbits/Optic Nerves.

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Cranial Nerve Identification

Which cranial nerve is indicated by Letter A in Image 184?

Optic nerve (CN II).

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Cranial Nerve Identification

What is the correct identification for Letter B in Image 188?

Spinal accessory nerve (CN XI).

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Arnold Chiari Malformation Evaluation

What condition involves the displacement of the cerebellar tonsil through the foramen magnum?

Chiari Malformation.

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Cranial Nerve Identification

What is the T1 signal and T2 signal of the syrinx identified by the blue arrows in Image 159 relative to the spinal cord?

Hypointense; hyperintense.

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Cranial Nerve Identification

Which cranial nerve is responsible for Bell's Palsy?

Cranial nerve VII (the facial nerve).

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Cranial Nerve Identification

Which cranial nerve is indicated by Letter G in Image 184?

Optic nerve (CN II).

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Pituitary Gland Imaging

What is the stalk of the pituitary gland also known as?

Infundibulum.

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MRI Techniques for Stroke

Which MRI pulse sequence is identified by the three images in the top right quadrant of Image 159?

T1 sagittal.

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Cranial Nerve Identification

What is the primary responsibility of the insular cortex?

Motor control and cognitive function.

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Cranial Nerve Identification

What is the correct cranial nerve for Question #40?

Oculomotor nerve (CN III).

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Cranial Nerve Identification

What cranial nerve is indicated by Letter C in Image 185?

Trigeminal nerve (CN V).

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FLAIR Sequence in MRI

What type of sequences are performed to suppress CSF and aid in detecting demyelination?

FLAIR sequences.

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Cranial Nerve Identification

What scan plane is optimal for visualization of the hippocampus?

Coronal oblique.

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Dural Venous Sinuses

Which dural venous sinuses drain from the confluence of sinuses to the mastoid portion of the temporal?

Transverse sinuses.

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Cranial Nerve Identification

How do the vertebral arteries enter the cranium?

Foramen magnum.

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Pituitary Gland Imaging

What is optimal for visualizing the pituitary gland in MRI?

High resolution T1 weighted images in Sagittal and Coronal planes pre and post contrast.

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Cranial Nerve Identification

Which cranial nerve is indicated by Letter C in Image 184?

Not specified in the provided text.

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Cranial Nerve Identification

Where do the right and left optic nerves join?

At the optic chiasm.

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Cranial Nerve Identification

Which cranial nerve is incorrectly identified as the Trochlear nerve?

Trigeminal nerve (CN V).

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Cranial Nerve Identification

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

Sylvian fissure.

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Cranial Nerve Identification

Which cranial nerve is indicated by Letter C in Image 187?

Glossopharyngeal nerve (CN IX).

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Cranial Nerve Identification

What cranial nerve is indicated by Letter E in Image 185?

Trochlear nerve (CN IV).

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FLAIR Sequence in MRI

On a T2 weighted image, why does CSF appear bright?

Because it has a long T2 relaxation time.

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Arnold Chiari Malformation Evaluation

What pathology do the red arrows in Image 159 indicate?

Chiari malformation.

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Pituitary Gland Imaging

What landmark is used for positioning a routine brain MRI?

The nasion.

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MRI Techniques for Stroke

What is the most useful MRI sequence for evaluating an acute stroke?

Diffusion weighted sequence.

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Cranial Nerve Identification

Which cranial nerve is indicated by Letter J in Image 184?

Olfactory nerve (CN I).

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Cranial Nerve Identification

What cranial nerve is indicated by Letter H in Image 184?

Not specified in the provided text.

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Cranial Nerve Identification

Which cranial nerve is referred to as the Trochlear nerve?

Cranial Nerve IV (CN IV).

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Cranial Nerve Identification

If the third ventricle is dilated but the fourth ventricle is not, which structure is associated with the pathology?

Aqueduct of Sylvius.

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Pituitary Gland Imaging

What weighted images are acquired to evaluate the extent of lesion involvement after gadolinium injection when ruling out brain tumors?

T1 weighted images.

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Cranial Nerve Identification

What anatomical structures does the articular disc of the TMJ lie between?

Mandibular fossa and mandibular condyle.

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Pituitary Gland Imaging

When confirming a suspected pituitary microadenoma, how should imaging be performed after contrast injection?

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

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Multiple Sclerosis Diagnosis

What MR findings can indicate a diagnosis of Multiple Sclerosis?

Low volume corpus callosum and increased white matter lesions.

Study Smarter, Not Harder
Study Smarter, Not Harder