Prepare for the ARRT MRI Technologist exam with these practice questions and answers. This guide covers MRI physics, patient screening, safety protocols, pulse sequences, and image optimization.
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.
Answer: Inner auditory canals
Q: The _____________ imaging plane would be the most optimal slice orientation for evaluation of Arnold Chiari Malformation and its inferior cerebellar tonsillar herniation.
Answer: sagittal
Q: A FLAIR sequence with a long TI is utilized to:
Answer: null the signal from CSF
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.
Answer: pituitary gland
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
Answer: orbits/ optic nerves
Q: MR findings of a low volume corpus callosum and increased white matter lesions can be indicative of a diagnosis of:
Answer: multiple sclerosis
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.
Answer: Inner Auditory Canal
Q: How many cranial nerves are there?
Answer: 12 pairs
Q: To best visualize the pituitary gland in MRI, high resolution T1 weighted images in the __________ planes pre and post contrast are optimal.
Answer: sagittal and coronal
Q: ____________ is a condition in which part of the cerebellar tonsil is displaced through the foramen magnum.
Answer: chiari malformation
Q: When imaging a hemorrhagic infarct in the brain, which pulse sequence would demonstrate the magnetic susceptibility effects better?
Answer: gradient echo
Q: _______ sequences are performed to suppress CSF (cerebro-spinal fluid)and aid in the detection of demyelination.
Answer: FLAIR
Q: The brainstem includes what?
Answer: midbrain, pons, medulla oblongata
Q: On a T2 weighted image, CSF appears bright because it has a __________ relaxation time.
Answer: long T2
Q: Which area(s) of the brain is/are typically affected in patients with a history of epilepsy?
Answer: frontal lobe and/or temporal lobe
Q: The right and left optic nerve join at the:
Answer: Optic chiasm
Q: The medial and lateral rectus muscles are located in the:
Answer: Eyes
Q: What scan plane would be optimal for visualization of the hippocampus?
Answer: Coronal oblique
Q: Which dural venous sinuses drain from the confluence of sinuses (by the internal occipital protuberance) to the mastoid portion of the temporal?
Answer: Transverse sinuses
Q: The stalk of the pituitary gland is also known as the
Answer: Infundibulum
Q: Which structure lies adjacent to the head of the caudate nucleus?
Answer: Anterior horn of the lateral ventricle
Q: In the TMJ’s, the articular disc lies between what two anatomical structures?
Answer: Mandibular fossa and mandibular condyle
Q: The insular cortex is primarily responsible for:
Answer: Motor control; cognitive function
Q: Which cranial nerve is responsible for Bell’s Palsy?
Answer: Cranial nerve VII (the facial nerve)
Q: To accurately depict the VII and VIII cranial nerves, the patient would centered at the level of the:
Answer: External auditory meatus
Q: The dural venous sinuses that drain into the internal jugular vein are the:
Answer: Sigmoid sinus
Q: When positioning a patient for a brain MRI, the centering should be placed at what anatomical landmark?
Answer: Nasion
Q: If the third ventricle is dilated, but the fourth ventricle is not, there would then be pathology associated with:
Answer: Aqueduct of Sylvius
Q: A depression in the base of the skull where the pituitary gland is located is called the ___________.
Answer: Sella turcica
Q: Which fissure divides the frontal and parietal lobes from the temporal lobes?
Answer: sylvan fissure
Q: The __________________ runs the length of the falx cerebri.
Answer: Superior sagittal sinus
Q: How do the vertebral arteries enter the cranium?
Answer: foramen magnum
Q: What would be the most useful sequence for evaluation of an acute stroke?
Answer: diffusion weighted
Q: When performing an MRI to confirm a suspected pituitary microadenoma, contrast is injected and imaging is performed:
Answer: Rapidly
Q: Lesions appear as _____________________ compared to the enhanced pituitary gland in contrast MR imaging
Answer: low signal intensity
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:
Answer: T1 weighted
Q: Identify the optic nerve (Cranial nerve II)- left side
Answer: The SNR will decrease and the scan time will increase
Q: identify the basilar artery
Answer: 3
Q: identify the trochlear nerve (cranial nerve IV)- right. side
Answer: reducing TE
Q: identify Oculomotor nerve (CN III)- left side
Answer: contrast information
Q: Identify Trochlear nerve (CN IV)- left side
Answer: With a decrease in spatial resolution
Q: Identify Oculomotor nerve (CN III)- right side
Answer: one line at a time
Q: Identify Optic nerve (CN II)- right. side
Answer: higher; more
Q: Identify Olfactory nerve (CN I)- right side
Answer: Pixel, two-dimensional
Q: Identify Olfactory nerve (CN I)- left side
Answer: Projects the high intensity pixels which represent blood vessels/ducts into one image
Q: Identify Abducens nerve (CN VI)- right side
Answer: Encoding oblique slice planes
Q: IdentifyTrigeminal nerve (CN V)- Right side
Answer: Frequency encoding
Q: Identify Abducens nerve (CN VI)- Left side
Answer: 4
Q: Identify Trigeminal nerve (CN V)- Left side
Answer: Increase
Q: identify the trochlear nerve (cranial nerve IV)- right. side
Answer: Slices will be thin
Q: Identify Trochlear nerve (CN IV)- left side
Answer: cubic
Q: Identify the cochlea
Answer: 12
Q: Identify Facial nerve (CN VII)- left side
Answer: 15
Q: identify the semicircular canal
Answer: False
Q: identify the Vestibulocochlear nerve (CN VIII)- Left side
Answer: Multi-Planar reconstruction (MPR)
Q: identify the Vestibulocochlear nerve (CN VIII)- right. side
Answer: greater SNR and elimination of crosstalk artifacts.
Q: identify the facial nerve- right side
Answer: Fourier transform
Q: identify the Spinal accessory nerve (CN XI)
Answer: FID
Q: Identify the hypoglossal nerve (CN XII)- Left side
Answer: a gradient
Q: Identify the hypoglossal nerve (CN XII)- Right side
Answer: Raw data
Q: identify chiari malformation
Answer: RF energy application
Q: identify syrinx
Answer: Change the slice thickness
Q: identify vestibular schwannoma
Answer: Remain constant
Q: identify pituitary tumor
Answer: produce an oblique slice