ARRT MRI exam study guide Questions with 100% Correct Answers | Updated & Verified | 2024

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. - ✔✔Inner auditory canals The _____________ imaging plane wo ...

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. - ✔✔Inner auditory canals The _____________ imaging plane would be the most optimal slice orientation for evaluation of Arnold Chiari Malformation and its inferior cerebellar tonsillar herniation. - ✔✔sagittal A FLAIR sequence with a long TI is utilized to: - ✔✔null the signal from CSF 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. - ✔✔pituitary gland 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 - ✔✔orbits/ optic nerves MR findings of a low volume corpus callosum and increased white matter lesions can be indicative of a diagnosis of: - ✔✔multiple sclerosis 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. - ✔✔Inner Auditory CanalHow many cranial nerves are there? - ✔✔12 pairs To best visualize the pituitary gland in MRI, high resolution T1 weighted images in the __________ planes pre and post contrast are optimal. - ✔✔sagittal and coronal ____________ is a condition in which part of the cerebellar tonsil is displaced through the foramen magnum. - ✔✔chiari malformation When imaging a hemorrhagic infarct in the brain, which pulse sequence would demonstrate the magnetic susceptibility effects better? - ✔✔gradient echo _______ sequences are performed to suppress CSF (cerebro-spinal fluid)and aid in the detection of demyelination. - ✔✔FLAIR The brainstem includes what? - ✔✔midbrain, pons, medulla oblongata On a T2 weighted image, CSF appears bright because it has a __________ relaxation time. - ✔✔long T2 Which area(s) of the brain is/are typically affected in patients with a history of epilepsy? - ✔✔frontal lobe and/or temporal lobe The right and left optic nerve join at the: - ✔✔Optic chiasmThe medial and lateral rectus muscles are located in the: - ✔✔Eyes What scan plane would be optimal for visualization of the hippocampus? - ✔✔Coronal oblique Which dural venous sinuses drain from the confluence of sinuses (by the internal occipital protuberance) to the mastoid portion of the temporal? - ✔✔Transverse sinuses The stalk of the pituitary gland is also known as the - ✔✔Infundibulum Which structure lies adjacent to the head of the caudate nucleus? - ✔✔Anterior horn of the lateral ventricle In the TMJ's, the articular disc lies between what two anatomical structures? - ✔✔Mandibular fossa and mandibular condyle The insular cortex is primarily responsible for: - ✔✔Motor control; cognitive function Which cranial nerve is responsible for Bell's Palsy? - ✔✔Cranial nerve VII (the facial nerve) To accurately depict the VII and VIII cranial nerves, the patient would centered at the level of the: - ✔✔External auditory meatus The dural venous sinuses that drain into the internal jugular vein are the: - ✔✔Sigmoid sinusWhen positioning a patient for a brain MRI, the centering should be placed at what anatomical landmark? - ✔✔Nasion If the third ventricle is dilated, but the fourth ventricle is not, there would then be pathology associated with: - ✔✔Aqueduct of Sylvius A depression in the base of the skull where the pituitary gland is located is called the ___________. - ✔✔Sella turcica Which fissure divides the frontal and parietal lobes from the temporal lobes? - ✔✔sylvan fissure The __________________ runs the length of the falx cerebri. - ✔✔Superior sagittal sinus How do the vertebral arteries enter the cranium? - ✔✔foramen magnum What would be the most useful sequence for evaluation of an acute stroke? - ✔✔diffusion weighted When performing an MRI to confirm a suspected pituitary microadenoma, contrast is injected and imaging is performed: - ✔✔Rapidly Lesions appear as _____________________ compared to the enhanced pituitary gland in contrast MR imaging - ✔✔low signal intensityWhen performing MRI to rule out brain tumors, the weighted images acquired to evaluate the extent of lesion involvement, after injection of gadolinium, are: - ✔✔T1 weighted Identify the optic nerve (Cranial nerve II)- left side - ✔✔ identify the basilar artery - ✔✔ identify the trochlear nerve (cranial nerve IV)- right. side - ✔✔ identify Oculomotor nerve (CN III)- left side - ✔✔ Identify Trochlear nerve (CN IV)- left side - ✔✔ Identify Oculomotor nerve (CN III)- right side - ✔✔ Identify Optic nerve (CN II)- right. side - ✔✔ Identify Olfactory nerve (CN I)- right side - ✔✔ Identify Olfactory nerve (CN I)- left side - ✔✔ Identify Abducens nerve (CN VI)- right side - ✔✔IdentifyTrigeminal nerve (CN V)- Right side - ✔✔ Identify Abducens nerve (CN VI)- Left side - ✔✔ Identify Trigeminal nerve (CN V)- Left side - ✔✔ identify the trochlear nerve (cranial nerve IV)- right. side - ✔✔ Identify Trochlear nerve (CN IV)- left side - ✔✔ Identify the cochlea - ✔✔ Identify Facial nerve (CN VII)- left side - ✔✔ identify the semicircular canal - ✔✔ identify the Vestibulocochlear nerve (CN VIII)- Left side - ✔✔ identify the Vestibulocochlear nerve (CN VIII)- right. side - ✔✔ identify the facial nerve- right side - ✔✔identify the Spinal accessory nerve (CN XI) - ✔✔ Identify the hypoglossal nerve (CN XII)- Left side - ✔✔ Identify the hypoglossal nerve (CN XII)- Right side - ✔✔ identify chiari malformation - ✔✔ identify syrinx - ✔