Notes in 02 Neurovascular anatomy

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Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyMiddle Cerebral artery (MCA):pre-bifurcation MCA = M{{c1::1}}post-bifurcation MCA = M{{c2::2}}M1 to…
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy Middle Cerebral artery (MCA): M1 extends from the {{c1::ICA (internal carotid artery) terminus}} to the…
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy Middle Cerebral artery (MCA): M2 extends {{c1::posteriorly::direction}} and spans from the {{c2::bottom…
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy Middle Cerebral artery (MCA): M3 extends {{c1::laterally::direction}} from the {{c1::top}} of the Sylvi…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyMiddle Cerebral artery (MCA): M4 represents the small {{c1::cortical}} branches
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Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyOccasionally, a fetal {{c2::carotid}}-{{c2::basilar}} connection may persist after birth and each a…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomySaltzman type {{c1::I}} persistent trigeminal artery connects to the {{c2::basilar}} artery Saltzma…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyYellow arrow: {{c1::flow-void::signal change}} associated with a vessel traversing through the {{c2::clivus}}…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c2::otic}}, {{c3::hypoglossal}}, and {{c4::proatlantal}} intersegmental arteries are rare persistent {{…
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Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyNormal circle of Willis anatomy is only seen approximately {{c1::25}}% of the time.
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy{{c1::Duplication}} is when an artery splits into two distinct vessels with no distal convergence.
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy{{c1::Azygos ACA::artery}} is associated with {{c2::holoprosencephaly::congenital malformation}}, {{c3::neuro…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyOcclusion of the azygos ACA will lead to ischemia in {{c1::both::one/both}} hemisphere(s)
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyLess common ACA anomalies include {{c1::bihemispheric}} ACA (2–7%) where a dominant A2 supplie…
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Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyAnterior Cerebral artery (ACA):The {{c1::A1}} segment travels above the {{c2::optic nerves::st…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c2::medial lenticulostriate perforator}} vessels of the ACA supply the {{c1::medial::relative location}…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::lateral lenticulostriate perforator}} vessels of the MCA supply the {{c2::lateral::relati…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe posterior communicating artery (P-comm) travels between the {{c1::optic tract}} and cranial nerve {{c2::I…
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy{{c1::Artery of Percheron}} is a variant where there is a dominant thalamic perforator supplying the {{c2::ve…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::cervical}} segment of the ICA extends from the {{c2::carotid bifurcation}} to the {{c3::s…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::petrous}} segment of the ICA extends through the carotid canal and slightly past foramen lacer…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::cavernous}} segment of the ICA begins a series of back-and-forth bends ("carotid siphon") whil…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c2::meningohypophyseal}} trunk of the cavernous segment (ICA) supplies the {{c1::pituitary}} and {…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c2::inferolateral}} trunk of the cavernous segment (ICA) supplies the {{c1::CN's III-VI}} and {{c3…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::supraclinoid}} segment of the ICA is the intradural portion that gives off the {{c2::ophthalmi…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::superior hypophyseal}} artery of the supraclinoid segment (ICA) supplies the {{c2::hypothalamu…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyA {{c1::fetal posterior cerebral artery (PCA)::artery}} is a variant supplied entirely by the ipsi-later…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::ICA terminus}} bifurcates into the {{c2::anterior}} and {{c2::middle}} cerebral arteries.
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyA number of {{c1::carotid::artery}}-{{c1::basilar::artery}} connections are formed during embryogen…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyFetal anterior-posterior circulation connections normally {{c1::regress before birth::regress before bir…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyA {{c1::persistent trigeminal}} artery is the most common persistent carotid-basilar conn…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyFenestration is more commonly seen in the {{c1::vertebrobasilar}}system than other intracranial art…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyIntracranial fenestrations are associated with {{c1::aneurysm}} formation.
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyIntradural aneurysms have a higher risk of {{c1::subarachnoid hemorrhage::complication}}.
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyIntradural aneurysms are treated more aggressively than aneurysms located {{c1::proximal::prox…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe persistent trigeminal artery courses adjacent to the {{c1::trigeminal}} nerve.
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyAngiography of a persistent trigeminal artery shows a characteristic {{c1::trident or tau}} si…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c2::posterior cerebral artery (PCA)}} gives off {{c1::thalamoperforators}} to supply the {{c3…
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy{{c3::Posterior communicating}} artery aneurysms may cause cranial nerve {{c2::III}} palsy due to local mass …
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe recurrent artery of Heubner arises most commonly from the {{c1::A1}} segment of the ACA, proxim…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe recurrent artery of Heubner supplies the {{c1::caudate head}} and the {{c2::anterior limb of the internal…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::anterior choroidal artery}} is the most distal branch of the internal carotid artery.&nbs…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c5::anterior choroidal}} artery supplies the {{c1::anteromedial temporal}} lobe including the…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyThe {{c1::ophthalmic}} artery supplies the orbital structures
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyWhich artery can be used as a landmark for the distal dural ring?{{c1::ophthalmic artery}}
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyAneurysms located at or superior to the ophthalmic artery are {{c1::intradural::intra/extra-dural}}.
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy{{c1::Fenestration}} is when an artery divides into two separate channels and then recombines&…
Published	05/01/2023	Neuroimaging Brain: Neurovascular Anatomy In arterial fenestration, the two channels each have its own {{c1::endothelial::vessel layer}} and {{c1…
Published	05/01/2023	Neuroimaging Brain: Neurovascular AnatomyLess common ACA anomalies include ACA {{c1::trifurcation}} (2–13%) with three A{{c2::2}} segments
Published	05/01/2023	{{c1::Artery of Percheron::vessel}} infarct will result in bilateral {{c2::ventromedial thalamic}} infarction, with or without {{c3::midbrain}} infarc…
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