It is worlwide accepted that in almost 60% of cases, anatomical variants in the Circle of Willis can be found. Some of them are associated with vascular malformations such as aneurysms. The knowledge of these anatomical variants is of vital importance when facing surgery, being the aims to preserve arteries in unusual localisations, which when injured can determine invalidating sequelae. The authors have reviewed 192 cerebral hemispheres, finding three variants in the anterior Circle of Willis: Azigos anterior cerebral artery; Median artery of the corpus callosum and accessory middle cerebral artery. The authors make an anatomical description of the findings, their angiographical correlation, and describe the influence of these changes during surgery of aneurysms in the involved regions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s1130-1473(04)70449-2 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Circle of Willis Variants and Their Association with Outcome after Successful Revascularization of Anterior Large Vessel Occlusion.
AJNR Am J Neuroradiol
January 2025
Department of Radiology, University of Cincinnati Medical Center, Cincinnati, Ohio, USA.
Background And Purpose: Leptomeningeal collaterals have been associated with better outcomes in large-vessel stroke, but little is known about how the Circle of Willis (CoW) collaterals affect stroke outcomes. We aimed to determine the relationship between three anatomically distinct CoW subtypes and 90-day outcomes in acute ischemic stroke patients after successful revascularization via endovascular thrombectomy (EVT).
Materials And Methods: We performed a retrospective analysis of patients treated with successful EVT for large-vessel occlusion at a comprehensive stroke center between May 2016 and November 2023.
Background: Seizures maybe associated with worse neuropathology findings in people with dementia. However, the role of seizure control and how it may impact post-mortem histopathology findings in people with dementia remains unexplored.
Method: We used the longitudinal, multicenter National Alzheimer Coordinating Center data from 9/2005 to 12/2021 to evaluate the association between seizure control and histopathological neurodegenerative changes in people with dementia.
The Circle of Willis (CW) is a critical cerebrovascular structure that supports collateral blood flow to maintain brain perfusion and compensate for eventual occlusions. Increased tortuosity of highrisk vessels within the CW has been implicated as a marker in the progression of cerebrovascular diseases especially in structures like the internal carotid artery (ICA). This is partly due to age-related plaque deposition or arterial stiffening.
View Article and Find Full Text PDFDeep-learning-based extraction of circle of Willis topology with anatomical priors.
Sci Rep
December 2024
Department of Applied Mathematics, Technical Medical Centre, University of Twente, Enschede, The Netherlands.
The circle of Willis (CoW) is a circular arrangement of arteries in the human brain, exhibiting significant anatomical variability. The CoW is extensively studied in relation to neurovascular pathologies, with certain anatomical variants previously linked to ischemic stroke and intracranial aneurysms. In an individual CoW, arteries might be absent (aplasia) or underdeveloped (hypoplasia, diameter < 1 mm).
View Article and Find Full Text PDFEvaluation of the Frequency of Migraine and CVA Patients Based on Circle of Willis Morphological Variations in MRA Images.
Adv Biomed Res
November 2024
Medical Faculty, Abadan University of Medical Sciences, Abadan, Iran.
Background: The Circle of Willis (CoW) forms a critical collateral route for the compensation pathway at the basal cistern of the brain. This study aims to determine if migraine headaches and cerebrovascular accidents (CVAs) are associated with the prevalence and patterns of CoW arterial variations seen in the three-dimensional time-of-flight magnetic resonance angiography technique in patients.
Materials And Methods: A cross-sectional study was undertaken by a systemic search of electronic databases in the Imaging Center, Abadan's Taleghani Hospital, Iran, from March 2020 to March 2022.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!