The anterior cerebral artery: II. A computer model of its cortical branches estereotaxically obtained from anatomical specimens

This article is a corrollary of a previously published anatomical study of the anterior cerebral artery. The authors propose a method to obtain a computer model of the anterior cerebral artery, based on a combined system of stereotaxic coordinates and a specially developed computer program. The graphic analysis, thus obtained, is projected on a model atlas brain and an ideal diagram of this anatomical structure is obtained. Forty anatomical specimens were used for this study.

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COMPUTER MODEL OF CEREBRAL CIRCULATION- EFFECT OF ANTERIOR CEREBRAL ARTERY TRUNK AND BRANCH OCCLUSION ON FLOW

10.26226/morressier.5ab8f55fd462b8029238ccf8 ◽

2018 ◽

Author(s):

Tharani Thirugnanachandran

Keyword(s):

Cerebral Artery ◽

Computer Model ◽

Cerebral Circulation ◽

Anterior Cerebral Artery

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A neurosurgical view of anatomical variations of the distal anterior cerebral artery: an anatomical study

Journal of Neurosurgery ◽

10.3171/jns.2006.104.2.278 ◽

2006 ◽

Vol 104 (2) ◽

pp. 278-284 ◽

Cited By ~ 28

Author(s):

Hasan Caglar Ugur ◽

Gokmen Kahilogullari ◽

Ali Firat Esmer ◽

Ayhan Comert ◽

Aysun B. Odabasi ◽

...

Keyword(s):

Cerebral Artery ◽

Anterior Cerebral Artery ◽

Cerebral Arteries ◽

Anatomical Study ◽

Anatomical Variations ◽

Main Trunk ◽

Surgical Interventions ◽

Parietal Lobes ◽

Distal Anterior Cerebral Artery ◽

Human Brains

Object The vascularization pattern of the anatomy of the distal anterior cerebral artery (ACA) remains a subject of debate. The authors provide detailed information about the distal ACA and shed light on issues concerning it that have not previously been adequately discussed. Methods Fifty adult human brains (100 hemispheres) were obtained during routine autopsies. Cerebral arteries were separately cannulated and injected with latex. The vascularization patterns of the cortical branches and the variations of the arteries were investigated. The authors found that the distal ACA supplied all the inner surfaces of the frontal and parietal lobes and a median of one third of the outer surfaces. The origin of the arteries from the main trunk and their exit angles affected the vascularization patterns of the hemispheres. The authors redefine controversial terminology regarding the callosomarginal artery. Conclusions In each hemisphere, the vascularization pattern of the distal ACA is different to a greater or lesser extent. An awareness of this fact will contribute significantly to surgical interventions.

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Anterior Cerebral Artery Stroke: Role of Collateral Systems on Infarct Topography

Stroke ◽

10.1161/strokeaha.120.032867 ◽

2021 ◽

Author(s):

Tharani Thirugnanachandran ◽

Richard Beare ◽

Melissa Mitchell ◽

Chloe Wong ◽

Jason Vuong ◽

...

Keyword(s):

Cerebral Artery ◽

Computer Model ◽

Anterior Cerebral Artery ◽

Artery Occlusion ◽

Anterior Cingulate ◽

Anterior Communicating Artery ◽

Cingulate Gyrus ◽

Vessel Occlusion ◽

Cerebral Artery Occlusion

Background and Purpose: The circle of Willis (CoW) and leptomeningeal anastomoses play an important role in transforming infarct topography following middle cerebral artery occlusion. Their role in infarct topography following anterior cerebral artery occlusion is not well understood. The aim of this study was to evaluate the role of the CoW and leptomeningeal anastomoses in modifying regional variation in infarct topography following occlusion of the anterior cerebral artery and its branches. Methods: Perfusion and magnetic resonance imaging of patients with anterior cerebral artery stroke and evidence of vessel occlusion were segmented and manually registered to standard brain template for voxel-wise comparison. Next, a computer model of the cerebral arteries was formulated as network of nodes connected by cylindrical pipes. The experiments included occlusion of successive branches of the anterior cerebral artery while the configurations of the CoW were varied. Results: Forty-seven patients with a median age of 77.5 years (interquartile range, 68.0–84.5 years) were studied. The regions with the highest probabilities of infarction were the superior frontal gyrus (probability =0.26) and anterior cingulate gyrus (probability =0.24). The regions around the posterior cingulate gyrus (probability =0.08), paracentral lobule (probability =0.05), precuneus and superior parietal lobule (probability =0.03) had a low probability of infarction. Following occlusions distal to the anterior communicating artery, the computer model demonstrated an increase in flow (>30%) in neighboring cortical arteries with leptomeningeal anastomoses. Conclusions: Traditionally the CoW has been regarded as the primary collateral system. However, our computer model shows that the CoW is only helpful in redirecting flow following proximal vessel occlusions (pre-anterior communicating artery). More important are leptomeningeal anastomoses, which play an essential role in distal vessel occlusions, influencing motor outcome by modifying the posterolateral extent of infarct topography.

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Anomalies and Variations of the Middle Cerebral Artery : A Micro anatomical Study

Neurosurgery ◽

10.1227/00006123-198806010-00008 ◽

1988 ◽

Vol 22 (6P1-P2) ◽

pp. 1023-1027 ◽

Cited By ~ 71

Author(s):

Felix Umansky ◽

Manuel Dujovny ◽

James I. Ausman ◽

Fernando G. Diaz ◽

Haresh G. Mirchandani

Keyword(s):

Middle Cerebral Artery ◽

Cerebral Artery ◽

Internal Carotid ◽

Polyester Resin ◽

Anterior Cerebral Artery ◽

Anatomical Study ◽

Clinical Implications ◽

Main Trunk ◽

Brain Hemispheres ◽

Accessory Middle Cerebral Artery

Abstract The microvascular anatomy of the main trunk and divisions of the middle cerebral artery was studied in 104 unfixed brain hemispheres injected with polyester resin and dissected under the operating microscope. The following anomalies and variations of the middle cerebral artery were found: fenestration (1 case; 1%), located on the first 4 mm of the main trunk of the middle cerebral artery; duplication (1 case; 1%). with vessels arising from the internal carotid artery; accessory middle cerebral artery (2 cases; 2%). originating on the A, segment of the anterior cerebral artery; single-trunk type of middle cerebral artery (4 cases; 4%), with no division of its main trunk; quadrifurcation (4 cases; 4%), in which the main trunk of the middle cerebral artery divided into four secondary trunks. The clinical implications of these anatomical findings are discussed, and photographs of representative specimens illustrate the anomalies.

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ANTERIOR CEREBRAL ARTERY: AN ANATOMICAL STUDY

International Journal of Anatomy and Research ◽

10.16965/ijar.2019.149 ◽

2019 ◽

Vol 7 (2.2) ◽

pp. 6494-6498

Author(s):

Dhanalakshmi V ◽

◽

Suresh Kumar T ◽

Arun Kumar K ◽

Sathish Kumar S ◽

...

Keyword(s):

Cerebral Artery ◽

Anterior Cerebral Artery ◽

Anatomical Study

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Gross anatomical study of recurrent artery of Huebner

National Journal of Clinical Anatomy ◽

10.1055/s-0039-3401551 ◽

2015 ◽

Vol 04 (01) ◽

pp. 005-011

Author(s):

Sunitha Narayanan

Keyword(s):

Cerebral Artery ◽

Neurological Deficit ◽

Anterior Cerebral Artery ◽

Cerebral Aneurysms ◽

Anatomical Study ◽

Anatomical Variations ◽

Anterior Communicating Artery ◽

Lateral Part ◽

Anterior Portion ◽

Surgical Interventions

Abstract Background: Cerebral aneurysms frequently occur in the arterial complex composed of Anterior Cerebral Artery, Anterior Communicating Artery and Recurrent Artery of Huebner. Due to the anatomical variations in the origin and course of the Recurrent Artery of Huebner, surgical interventions in the anterior portion of circle of Willis can be complicated by obstruction or vascular damage to Recurrent Artery of Huebner, caused by improper clip placement. Objectives: To study the variations in the origin, number, course & termination of Recurrent artery of Huebner. Also the distance of origin of the Recurrent artery from the junction of Pre and Postcommunicating segment of Anterior Cerebral Artery was noted. Materials and methods: The study was conducted in 60 randomly selected brain specimens fixed in 10% formalin for 10 days in the Department of Anatomy. The Recurrent Artery was then carefully dissected and observations were made. Photographs were taken to document the observations. Results: The Recurrent artery of Huebner arose most frequently from the junction of Pre and Postcommunicating segment of Anterior Cerebral Artery (59.2%) and next frequently from the Postcommunicating segment of Anterior Cerebral Artery within 1mm from the junction of Pre and Postcommunicating segment of Anterior Cerebral Artery. It coursed more commonly anterior to the Precommunicating segment of Anterior Cerebral Artery in 80% cases. The artery terminated in the lateral part of anterior perforated substance in 96.7% of the specimens. Conclusions: The Recurrent artery should be routinely identified during clipping of the aneurysm of the Anterior Communicating Artery to prevent postoperative neurological deficit.

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