cerebrovascular anatomy 1
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Cerebrovascular Anatomy
M. Christopher Wallace M.D.The Toronto Western Hospital,
University Health NetworkUniversity of Toronto
Postgraduate Lecture SeriesDivision of Neurosurgery
Friday October 6, 2000
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Collateral Circulation
Circle of Willis Variation Leptomeningeal
Collateral
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Cerebral Autoregulation
Maintenance of blood flow during variation
in blood pressure Change in blood flow related to metabolic
activity
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Mechanism for Cerebral
Autoregulation?
Myogenic Neurogenic Metabolic
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Measurement of Cerebral Blood
Flow Seymour Kety
Delivery of blood flow to given wt of brain pertime period 50ml/100grams/minute
Brain takes 12-15% of cardiac output
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Internal Carotid Artery Divisions: cervical, petrous, cavernous,
infraclinoid, supraclinoid Branches: meningohypophyseal trunk
dorsal meningeal artery, tentorial artery, inferiorhypophyseal
artery of the inferior cavernous
sinus capsular arteries of McConnell
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Internal Carotid Artery
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Internal Carotid Artery Supraclinoid Branches
Ophthalmic Posterior communicating Anterior choroidal
Bifurcation
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Middle Cerebral Artery Variation Divisions (M1-M4)
Lenticulostriate arteries medial lateral
putamen, caudate, supinternal capsule
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Anterior Cerebral Artery Variation Divisions (A1-A4) Anterior communicating artery
Lamina terminalis, septal region,fornix, preoptic/hypothalamus
Recurrent artery of Heubner
Anterior putamen, pallidum andinternal capsule
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