scholarly journals Cerebral Angiographic Study of Anatomical Variations of Anterior Cerebral Artery Complex in Bangladeshi Population

2016 ◽  
Vol 32 (2) ◽  
pp. 56-62
Author(s):  
Md Amir Hossain ◽  
Sharif Uddin Khan ◽  
Kazimohibur Rahman ◽  
Sirajeeshafiqul Islam ◽  
Khairulkabir Patwary ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Internal Carotid ◽  
Anterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Anatomical Variations ◽  
Anterior Communicating Artery ◽  
Terminal Branch ◽  
Complex Anatomy ◽  
Proximal Anterior Cerebral Artery ◽  
Bangladeshi Population

Background: Anterior cerebral artery is an important terminal branch of internal carotid artery. It forms the anterior component of circle of Willis along with the anterior communicating artery. It is known for the frequent variations. The knowledge of anatomical variations in anterior cerebral artery is of considerable help to clinicians and interventionists. Method: Morphology and variations of the anterior cerebral arteries and the anterior communicating artery were studied in 90 patients undergone digital subtraction angiography (DSA). Results: Variations were found in 33% (n=30). Variations of the segments in relation with size, course, communications and terminations of the anterior cerebral artery (ACA) were noted. These were divided into different groups like hypoplasia, aplasia, duplication and fenestrations. Hypoplasia/Aplasia of proximal anterior cerebral artery (A1) was 24.5% in right side and 9% in left side. Anterior communicating artery (AComA) was found absent in 9% and fenestration in 9%. Callosomarginal artery was found absent in 2.2% in right side and 4.5% in left side. In right callosomarginal artery 6% had abnormal origin and 3.5% abnormal in left side.Pericallosal artery was present 100% on both sides. Conclusion: Variations of anterior cerebral artery complex anatomy is found common in Bangladeshi population. Bangladesh Journal of Neuroscience 2016; Vol. 32 (2): 56-62

scholarly journals Digital Subtraction Angiography of Anterior Cerebral Artery Complex in Indian Population at Two Tertiary Super-Specialty Hospitals

2018 ◽  
Vol 4 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Md Amir Hossain ◽  
Shakir Husain ◽  
Md Shohidul Islam ◽  
Muhammed Abdul Momen Khan
Keyword(s):  
Digital Subtraction Angiography ◽  
Cerebral Artery ◽  
Indian Population ◽  
Anterior Cerebral Artery ◽  
Anatomical Variations ◽  
Anterior Communicating Artery ◽  
Terminal Branch ◽  
Digital Subtraction ◽  
Complex Anatomy ◽  
Specialty Hospital

Background: Cerebral circulation has different variations in blood supply. Anterior cerebral artery is an important terminal branch of internal carotid artery. It forms the anterior component of circle of Willis along with the anterior communicating artery. The knowledge of anatomical variations in anterior cerebral artery is of considerable help to clinicians.Objective: The purpose of the study is to find out common anatomical variations of anterior cerebral artery complex by digital subtraction angiography in Indian population.Methodology: This descriptive cross-sectional study was conducted in the Neurointervention department of Max Super-specialty Hospital, New Delhi and Neo Multi-specialty Hospital, Noida, India during July 2016 to December 2016 for a period of six (06) months. Patients admitted in the Neurointervention department for digital subtraction angiography (DSA) were included in this study. Sampling technique was purposive. The angiogram machine was SIEMENS Artis Zee system and framing rate was 4f/sec. Morphology and variations of the anterior cerebral arteries and the anterior communicating artery were studied in 75 patients undergone cerebral DSA.Results: Variations were found in 48% (n=36). Variations of the segments in relation with size, course, communications and terminations of the anterior cerebral artery (ACA) were noted. These were divided into different groups like hypoplasia, aplasia, duplication and fenestrations. Hypoplasia/Aplasia of proximal anterior cerebral artery (A1) was 13.3% in right side and 5.3% in left side. Anterior communicating artery (AComA) was found absent in 10.7% and fenestration in 12%. Callosomarginal artery was found absent in 1.3% in right side and 5.3% in left side. In right callosomarginal artery 6.8% had abnormal origin and 4.2% abnormal in left side. Pericallosal artery was present 100% on both sides.Conclusion: Variations of anterior cerebral artery complex anatomy is found common in Indian population. Among them hypoplasia/aplasia is most commonJournal of National Institute of Neurosciences Bangladesh, 2018;4(1): 12-17

scholarly journals Anatomical variations of circle of Willis - a cadaveric study

2017 ◽  
Vol 4 (4) ◽  
pp. 1249 ◽  
Author(s):  
Ramanuj Singh ◽  
Ajay Babu Kannabathula ◽  
Himadri Sunam ◽  
Debajani Deka
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anterior Part ◽  
Cerebral Arteries ◽  
Anatomical Variations ◽  
Circle Of Willis ◽  
Anterior Communicating Artery ◽  
Surgical Interventions ◽  
Collateral Channel ◽  
The Right

Background: The circle of Willis (CW) is a vascular network formed at the base of skull in the interpeduncular fossa. Its anterior part is formed by the anterior cerebral artery, from either side. Anterior communicating artery connects the right and left anterior cerebral arteries. Posteriorly, the basilar artery divides into right and left posterior cerebral arteries and each join to ipsilateral internal carotid artery through a posterior communicating artery. Anterior communicating artery and posterior communicating arteries are important component of circle of Willis, acts as collateral channel to stabilize blood flow. In the present study, anatomical variations in the circle of Willis were noted.Methods: 75 apparently normal formalin fixed brain specimens were collected from human cadavers. 55 Normal anatomical pattern and 20 variations of circle of Willis were studied. The Circles of Willis arteries were then colored, photographed, numbered and the abnormalities, if any, were noted.Results: Twenty variations were noted. The most common variation observed is in the anterior communicating artery followed by some other variations like the Posterior communicating arteries, Anterior cerebral artery and posterior cerebral artery (PCA) was found in 20 specimens.Conclusions: Knowledge on of variations in the formation of Circle of Willis, all surgical interventions should be preceded by angiography. Awareness of these anatomical variations is important in the neurovascular procedures.

scholarly journals Bilateral Infraoptic Origin of Anterior Cerebral Arteries: A Rare Anomaly and its Embryological and Clinical Significance

2006 ◽  
Vol 12 (2) ◽  
pp. 155-159 ◽  
Author(s):  
S. Chakraborty ◽  
N. F. Fanning ◽  
S. K. Lee ◽  
K.G. TerBrugge
Keyword(s):  
Clinical Significance ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Anatomical Variations ◽  
Anterior Communicating Artery ◽  
Aneurysm Formation ◽  
Rare Anomaly

We describe a case of bilateral infraoptic origin of the anterior cerebral arteries associated with an anterior communicating artery (ACOM) aneurysm. Anatomical variations of the anterior cerebral artery (ACA) are common; however, bilateral infraoptic course of the anterior cerebral artery is extremely rare. Since an infraoptic course of the ACA is associated with ACOM aneurysm formation, an understanding of the cerebrovascular anatomy and embryology is important for appropriate management of the aneurysm.

Bilateral Internal Carotid to Anterior Cerebral Artery Anastomosis with Anterior Communicating Artery Aneurysm: Technical Case Report

2005 ◽  
Vol 57 (suppl_4) ◽  
pp. ONS-E400-ONS-E400 ◽  
Author(s):  
Kaya Kılıç ◽  
Metin Orakdöğen ◽  
Aram Bakırcı ◽  
Zafer Berkman
Keyword(s):  
Case Report ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Anterior Cerebral Artery ◽  
Artery Aneurysm ◽  
Anterior Communicating Artery

Abstract OBJECTIVE AND IMPORTANCE: The present case report is the first one to report a bilateral anastomotic artery between the internal carotid artery and the anterior communicating artery in the presence of a bilateral A1 segment, fenestrated anterior communicating artery (AComA), and associated aneurysm of the AComA, which was discovered by magnetic resonance angiography and treated surgically. CLINICAL PRESENTATION: A 38-year-old man who was previously in good health experienced a sudden onset of nuchal headache, vomiting, and confusion. Computed tomography revealed a subarachnoid hemorrhage. Magnetic resonance angiography and four-vessel angiography documented an aneurysm of the AComA and two anastomotic vessels of common origin with the ophthalmic artery, between the internal carotid artery and AComA. INTERVENTION: A fenestrated clip, introduced by a left pterional craniotomy, leaving in its loop the left A1 segment, sparing the perforating and hypothalamic arteries, excluded the aneurysm. CONCLUSION: The postoperative course was uneventful, with complete recovery. Follow-up angiograms documented the successful exclusion of the aneurysm. Defining this particular internal carotid-anterior cerebral artery anastomosis as an infraoptic anterior cerebral artery is not appropriate because there is already an A1 segment in its habitual localization. Therefore, it is also thought that, embryologically, this anomaly is not a misplaced A1 segment but the persistence of an embryological vessel such as the variation of the primitive prechiasmatic arterial anastomosis. The favorable outcome for our patient suggests that surgical treatment may be appropriate for many patients with this anomaly because it provides a complete and definitive occlusion of the aneurysm.

Carotid-anterior cerebral artery anastomosis

1976 ◽  
Vol 44 (3) ◽  
pp. 378-382 ◽  
Author(s):  
Stephen Nutik ◽  
Domenico Dilenge
Keyword(s):  
Optic Nerve ◽  
Cerebral Artery ◽  
Ophthalmic Artery ◽  
Internal Carotid ◽  
Anterior Cerebral Artery ◽  
Optic Chiasm ◽  
Anterior Communicating Artery ◽  
Content Type ◽  
Anatomical Features ◽  
Fine Print

✓ The angiographic and anatomical features of an anomalous communication between the intradural internal carotid artery and the anterior cerebral artery are described. Essential features of the anastomosis include an origin at, or close to, the origin of the ophthalmic artery, a course ventral to the ipsilateral optic nerve and anterior to the optic chiasm, and a termination near the anterior communicating artery. Although rare, the condition should be considered as an entity. The incidence of associated berry aneurysm and other congenital vascular anomalies is high.

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

2006 ◽  
Vol 104 (2) ◽  
pp. 278-284 ◽  
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.

scholarly journals Angiographic Study of the Anatomical Variations of the Anterior Communicating Artery Complex

2020 ◽  
pp. 97-101
Author(s):  
Mohamed Ali Eissa ◽  
Ahmed Ganna ◽  
Mohamed Amer ◽  
Ahmed Shakal
Keyword(s):  
Internal Carotid ◽  
Cerebral Arteries ◽  
Vascular Anatomy ◽  
Anatomical Variations ◽  
Vascular Pathology ◽  
Anterior Communicating Artery ◽  
Study Group ◽  
Digital Subtraction ◽  
Angiographic Study ◽  
Anatomical Variant

Introduction: The anterior communicating artery complex consists of two anterior cerebral arteries (ACA), the anterior communicating artery (AComA) and the recurrent arteries of Heubner. ACA is divided into the three segments; A1 originating from the internal carotid artery, A2 extending from AComA and A3 also known as the pericallosal artery. The anatomical variations of the ACoA complex are not adequately discussed. The aim of this study is to detect the anatomical variations in the ACoA complex in patients that don’t have any intracranial vascular pathology. Aims: The present study determines the anatomical Variations of the anterior communicating artery complex. Patients and Methods: The study group consists of 70 subjects, using Digital Subtraction Angiography and Computed Tomography Angiography to visualize the vascular anatomy. Results: About 14.29% (10 patients) Aplastic ACoA, 7.14% (5 patients) have unilateral A1 ACA segment hypoplasia, 2.86% (2 patients) have unilateral A1 ACA segment aplasia. Conclusion: The most common anatomical variant is Aplastic ACoA.

scholarly journals Clinical and neuroimaging analysis of carotid infarction in the acute ischemic stroke

2021 ◽  
Vol 17 (5) ◽  
pp. 36-46
Author(s):  
M.M. Prokopiv
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Clinical Manifestations ◽  
Short Term ◽  
Middle Cerebral Arteries ◽  
Proximal Anterior Cerebral Artery ◽  
The Brain

Background. The assessment of clinical manifestations in patients with acute pre-circular infarction is important for verification of the lesion, the choice of the treatment program, prediction of the stroke consequences. The purpose is to investigate the clinical, neurological, and neuroimaging features of lacunar and non-lacunar carotid infarctions in acute ischemic stroke and to assess their short-term consequences. Materials and methods. There was performed a clinical and radiological analysis of carotid infarction in 540 patients with acute ischemic stroke, which were divided into two groups: 155 patients were verified for infarcts in the cortex and white matter of the brain in the vasculature of the anterior and middle cerebral artery; in 385 patients, infarct foci were found in the area of the deep hemispheres of the brain (subcortical-capsular infarcts). Results. Clinical neuroimaging analysis of patients with ischemic stroke in the vasculature of the cortical branches of the anterior and middle cerebral arteries of the anterior circulatory basin showed that acute cerebral circulatory disorders caused the development of small cortical infarctions in 89 (57.4 %) patients and 65 (41 %) — lacunar infarction, in one patient (0.7 %) with occlusion of the proximal anterior cerebral artery — total infarction. The neurological clinical picture of infarcts of varying localization, which was determined by the location and size of the lesion, was described. Conclusions. The obtained results showed that the consequences of anterior circular infarctions depended on the localization of the lesion of the arterial area, the caliber of the infarction of the dependent artery, the size of the infarct locus. For the most part, these factors determined the background severity of neurological deficit after the development of acute ischemic stroke.

scholarly journals Vascularization of the Alouatta belzebul brain base

2020 ◽  
Vol 40 (4) ◽  
pp. 315-323
Author(s):  
Dayane Kelly Sabec-Pereira ◽  
Fabiano C. Lima ◽  
Fabiano R. Melo ◽  
Fabiana Cristina S.A. Melo ◽  
Kleber Fernando Pereira ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Internal Carotid ◽  
Cerebral Arteries ◽  
Terminal Branch ◽  
Vertebral Arteries ◽  
Caudal Portion ◽  
Cerebellar Artery ◽  
The Right ◽  
The Brain ◽  
Left Middle

ABSTRACT: We studied the arterial circle in the brain of five specimens of the Alouatta belzebul primate. The material had the arterial system perfused (water at 40°C), injected with stained latex (Neoprene 650), fixed in aqueous formaldehyde solution (10%) and dissected for vessel verification. The arterial circle of this primate is composed of two vascular systems: the vertebra-basilar and the carotid ones, which anastomose to close the arterial circuit. In the caudal portion of the arterial circle, there are the vertebral arteries and their branches: the rostral spinal artery and the caudal inferior cerebellar artery. The anastomosis of the vertebral arteries gives rise to the basilar artery. It presented an anatomical variation at the beginning of its path, forming a double basilar artery, called arterial island. In its course, it emitted branches giving rise to the rostral inferior cerebellar artery, the pontine arteries, the rostral cerebellar arteries, the satellite rostral cerebellar arteries and its terminal branch, the caudal cerebral artery, which presented itself in two segments: the pre-communicating one and post-communicating, joining the internal carotid artery and originating the caudal communicating artery. This group of arteries and anastomoses enclose the caudal portion of the arterial circle. From the right and left internal carotid arteries begins the rostral portion of the arterial circle, which consists of the right and left rostral cerebral arteries and the right and left middle cerebral arteries. The rostral cerebral arteries anastomose into a single trunk, giving rise to the interhemispheric artery, and in A. belzebul and Sapajus libidinosus, the rostral communicating artery is absent. The interhemispheric artery goes to the midbrain region and the corpus callosum knee divides into pericalous artery and callosarginal artery, which will supply the pre and post-central regions of the cerebral hemispheres of this species, as well as other non-human and human primates. It is noted that in the first part of the left rostral cerebral artery, there is a direct inosculation between the recurrent branch of the rostral cerebral artery and left middle cerebral artery to supply the entorhinal region. This fact also occurs in Pongo spp. The middle cerebral artery travels along the lateral sulcus where it emits several superficial branches to irrigate the superior and inferior lateral cortical regions of the frontal, parietal and temporal lobes. It is not part of the arterial circle but is the terminal branch of the internal carotid artery. A. belzebul can be considered to depend on two sources of supply to the brain: the vertebra-basilar and carotid systems, contributing to the intervention of veterinarians during clinical and surgical procedures in other primates, as well as the preservation of wild animals.

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