cerebrovascular anatomy 1

8/12/2019 Cerebrovascular Anatomy 1

1/15

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


2/15

Collateral Circulation

Circle of Willis Variation Leptomeningeal

Collateral


3/15

Cerebral Autoregulation

Maintenance of blood flow during variation

in blood pressure Change in blood flow related to metabolic

activity


4/15

Mechanism for Cerebral

Autoregulation?

Myogenic Neurogenic Metabolic


5/15

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


6/15

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


7/15

Internal Carotid Artery


8/15


9/15

Internal Carotid Artery Supraclinoid Branches

Ophthalmic Posterior communicating Anterior choroidal

Bifurcation


10/15


11/15

Middle Cerebral Artery Variation Divisions (M1-M4)

Lenticulostriate arteries medial lateral

putamen, caudate, supinternal capsule


12/15


13/15


14/15

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


15/15

cerebrovascular anatomy 1

Documents