Notes in 05 Neuroimaging

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Published	04/16/2024	{{c1::Epidural}} hematoma is a collection of blood between the dura and the skull
Published	09/03/2024	Epidural hematoma is classically due to a(n) {{c1::fracture}} at the pterion of the temporal bone
Published	09/03/2024	{{c2::Epidural}} hematoma is due to rupture of the {{c1::middle meningeal}} artery (branch of maxillary artery)
Published	04/16/2024	{{c2::Epidural}} hematoma is characterized by a(n) {{c3::hyper}}-dense {{c1::lens (biconvex)}}-shaped collection of blood on CT
Published	09/03/2024	{{c1::Epidural}} hematoma is characterized by rapid expansion due to high arterial pressure and can present with a(n) {{c2::scalp}} hematoma as w…
Published	09/03/2024	{{c2::Epidural}} hematoma often presents with a loss of consciousness followed by a(n) {{c1::lucid}} interval for up to 48 hours
Published	09/03/2024	Epidural hematoma may present on physical exam with {{c1::CN III}} palsy
Published	09/03/2024	{{c1::Transtentorial}} herniation is a potentially lethal complication of epidural hematoma
Published	09/03/2024	Can epidural hematomas cross suture lines? {{c1::No}}
Published	04/16/2024	{{c1::Subdural}} hematoma is a collection of blood underneath the dura
Published	09/03/2024	{{c2::Subdural}} hematoma is due to tearing of {{c1::bridging veins}} that lie between the dura and arachnoid
Published	09/03/2024	Acute subdural hematomas arise with {{c1::trauma}} and appear {{c2::hyper}}-dense on CT
Published	09/03/2024	Chronic subdural hematomas appear {{c1::hypo}}-dense on CT
Published	09/03/2024	Chronic subdural hematoma is more common in {{c2::alcoholics}} and {{c3::the elderly}} due to {{c1::cerebral atrophy}}, which stretches the bridging v…
Published	09/03/2024	Which intracranial hemorrhage is seen in shaken babies? {{c1::Subdural hematoma}}
Published	09/03/2024	Which intracranial hemorrhage more commonly causes a midline shift? {{c1::Subdural hematoma}}
Published	04/16/2024	{{c2::Subdural}} hematoma is characterized by a(n) {{c1::crescent}}-shaped hemorrhage on CT
Published	09/03/2024	Can subdural hematomas cross suture lines? {{c1::Yes}}
Published	09/03/2024	Herniation is displacement of brain tissue due to {{c1::mass effect}} or increased {{c2::intracranial pressure}}
Published	09/03/2024	Tonsillar herniation involves displacement of the cerebellar tonsils into the {{c1::foramen magnum}}
Published	09/03/2024	{{c2::Tonsillar}} herniation results in compression of the brain stem, which causes {{c1::cardiopulmonary}} arrest
Published	09/03/2024	{{c2::Subfalcine (cingulate)}} herniation involves displacement of the cingulate gyrus under the {{c1::falx cerebri}}
Published	09/03/2024	{{c2::Subfalcine}} herniation may result in compression of the {{c1::anterior}} cerebral artery, which causes infarction
Published	09/03/2024	Uncal herniation involves displacement of the medial temporal lobe (uncus) under the {{c1::tentorium cerebelli}}
Published	09/03/2024	{{c1::Uncal}} herniation may cause compression of CN III, leading to an ipsilateral dilated pupil with a "down and out" gaze
Published	09/03/2024	{{c2::Uncal}} herniation may cause compression of the {{c1::posterior}} cerebral artery, causing infarction of the occipital lobe
Published	09/03/2024	Uncal herniation typically compresses the {{c1::cerebral peduncle}} on the same side of the herniation resulting in a(n) {{c2::contra}}lateral pa…
Published	09/03/2024	If uncal herniation is so severe that it is able to reach the opposite cerebral peduncle, it will cause a(n) {{c1::ipsi}}lateral paresis and/or {{c3::…
Published	09/03/2024	Downward transtentorial (central) herniation may result in rupture of the {{c1::paramedian}} branches of the {{c3::basilar}} artery, which cause {{c2:…
Published	09/03/2024	Which intracranial hemorrhage is seen in the image below? {{c1::Subarachnoid hemorrhage}}
Published	09/03/2024	Infarction and/or neoplasm of the blood-brain-barrier destroys endothelial cell tight junctions, causing {{c1::vasogenic edema}}
Published	09/03/2024	Cytotoxic edema is a(n) {{c2::intra}}cellular edema caused by impaired function of {{c1::Na/K-ATPase}} pumps on neuronal cell membranes
Published	09/03/2024	Inflammation following brain infarction (e.g. meningitis/encephalitis) may cause cerebral edema resulting in {{c1::vasogenic}} intracranial …
Published	09/03/2024	Increased vessel permeability and fluid accumulation outside of brain cells (interstitium) leads to {{c1::vasogenic}} intracranial hypertension
Published	09/03/2024	Hydrocephalus ex vacuo is characterized by {{c1::dilated}} sulci
Published	09/03/2024	High-pressure hydrocephalus is characterized by {{c1::effaced}} sulci
Published	09/03/2024	If an imaging finding is in the brain parenchyma, it is called {{c1::intra}}-axial
Published	09/03/2024	If an imaging finding is in the subarachnoid space, it is called {{c1::extra}}-axial
Published	09/03/2024	The pathology in this head CT wo contrast is {{c1::hypo}}-dense
Published	09/03/2024	The pathology in this head CT wo contrast is {{c1::intra}}-axial
Published	09/03/2024	The pathology in this head CT wo contrast shows {{c1::(+)::(+)/(-)}} mass effect
Published	09/03/2024	The pathology in this head CT wo contrast shows {{c1::cytotoxic::cytotoxic/vasogenic}} edema
Published	09/03/2024	Vasogenic edema is a(n) {{c2::extra}}cellular edema caused by impaired function of {{c1::blood-brain barrier}}
Published	09/03/2024	This CT head wo contrast shows cytotoxic edema in {{c1::ACA}} vascular territory
Published	09/03/2024	This CT head wo contrast shows cytotoxic edema in {{c1::MCA}} vascular territory
Published	09/03/2024	This CT head wo contrast shows cytotoxic edema in {{c1::PCA}} vascular territory
Published	09/03/2024	The pathology in this head CT wo contrast is {{c1::hypo}}-dense
Published	09/03/2024	The pathology in this head CT wo contrast is {{c1::intra}}-axial
Published	09/03/2024	The pathology in this head CT wo contrast shows {{c1::(+)::(+)/(-)}} mass effect
Published	09/03/2024	The pathology in this head CT wo contrast shows {{c1::scalloped}} borders
Published	09/03/2024	This CT head wo contrast shows {{c1::encephalomalacia::condition}}
Published	09/03/2024	t-PA is contraindicated in this patient because they have {{c1::hemorrhage}}
Published	09/03/2024	t-PA is contraindicated in this patient because they have {{c1::edema}}
Published	09/03/2024	t-PA is contraindicated in this patient because they have {{c1::tumor}}
Published	09/03/2024	The earliest signs of an ischemic stroke appear on CT after {{c2::1 hour::time}}
Published	09/03/2024	What early sign of ischemic stroke is shown below?{{c1::Loss of insular ribbon (gray-white differentiation)}}
Published	09/03/2024	What early sign of ischemic stroke is shown below?{{c1::Loss of deep gray nuclei (gray-white differentiation)}}
Published	09/03/2024	What early sign of ischemic stroke is shown below?{{c1::Effacement of sulci}}
Published	09/03/2024	{{c1::CT perfusion::imaging study}} is used to assess whether or not pt would benefit from thrombectomy 6-24 hrs into ischemic stroke
Published	09/03/2024	This MRI is {{c1::T1}}-weighted
Published	09/03/2024	Contrast can only be used with {{c1::T1}}-weighted MRI
Published	09/03/2024	This MRI is {{c1::T2}}-weighted
Published	09/03/2024	This MRI is {{c1::T2 FLAIR}}-weighted
Published	09/03/2024	{{c1::Cytotoxic}} edema will show up as {{c2::hyper}}-intense on diffusion-weighted imaging (DWI) and {{c2::hypo}}-intense on apparent diffusion coeff…
Published	09/03/2024	Vasogenic edema will show up as {{c2::hypo}}-intense on T1-weighted MRI and {{c2::hyper}}-intense on T2-weighted MRI
Published	09/03/2024	You can tell this mass is extra-axial because it shows {{c2::displaced cortical ribbon}}
Published	09/03/2024	You can tell this mass is {{c1::extra}}-axial because it shows {{c2::T2-hyperintense CSF cleft}}
Published	09/03/2024	You can tell this mass is extra-axial because it shows {{c2::dural tail}}
Published	09/03/2024	If a neoplasia, infection, or inflammation in the brain is suspected, {{c1::MRI::imaging}} is used because it has better soft-tissue co…
Published	09/03/2024	How could demyelination at the level of C1-C2 cause paresthesia in the distribution of CN V3?{{c1::Affects spinal nucleus of V}}
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