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A. Anteroposterior view after injection of contrast dye in the left internal carotid artery demonstrates a 13-mm diameter anterior communicating artery
aneurysm (A Comm). The left internal carotid, middle carotid, and anterior cerebral arteries are clearly seen. B. Lateral view of the same injection again
demonstrates the aneurysm. C. Figure depicting the anatomy of the circle of Willis in relation to key structures on the base of the brain. A1 = first section of
anterior cerebral artery, before anterior communicating artery; A2 = second section of anterior cerebral artery, after anterior communicating artery; ACA =
anterior cerebral artery; ACoA = anterior communicating artery; BA = basilar artery; CN III = third cranial nerve (oculomotor nerve); CN IV = fourth cranial
nerve (trochlear nerve); I = infundibulum (the attachment of the pituitary stalk); ICA = internal cerebral artery; MCA = middle cerebral artery; OA =
Source: Chapter 42. Neurosurgery, Schwartz's Principles of Surgery, 9e
ophthalmic artery; ON = optic nerve; P1 = first section of posterior cerebral artery, before the posterior communicating artery; P2 = second section of the
Citation:
Brunicardi
F, Andersen
Billiar TR, Dunn
DL,PCA
Hunter
Matthews
JB, Pollock
Schwartz's
Principles
of Surgery,
9e; 2010
posterior cerebral
artery,
after the
posterior DK,
communicating
artery;
= JG,
posterior
cerebral
artery; RE.
PCoA
= posterior
communicating
artery;
SCA =
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at:
http://mhmedical.com/
Accessed:
April
30,
2017
superior cerebellar artery.
Copyright © 2017 McGraw-Hill Education. All rights reserved
(Reproduced with permission from Osborn AG, Jacobs JM: Diagnostic Cerebral Angiography, 2nd ed. Philadelphia: Lippincott, Williams & Wilkins, 1998, p
108.)