Results 11 to 20 of about 14,862 (261)

Interaction between vertebral artery hypoplasia and circle of Willis variants in posterior circulation stroke and TIA [PDF]

Frontiers in Neurology
BackgroundThe clinical relevance of posterior Circle of Willis (CoW) variants remains controversial, particularly in the presence of vertebral artery hypoplasia (VAH).
Virginija Gaigalaite, Augenijus Vilimas, Jurate Dementaviciene, Sonata Varvuolyte, Inga Slautaite   +4 more
doaj   +2 more sources

Prevalence and Patterns of Circle of Willis Variants in Civil Service Hospital: A Retrospective Cross-Sectional Study Using 3 Tesla Magnetic Resonance Angiography [PDF]

Journal of Nepal Medical Association
Introduction: The Circle of Willis (CoW) is a crucial cerebral arterial network, and its anatomical variations may influence cerebrovascular health.
Subash Thapa, Rabindra Desar, Jorina Basnet, Sushmita Thapa   +3 more
doaj   +2 more sources

Quantitative evaluation of normal cerebrospinal fluid flow in Sylvian aqueduct and perivascular spaces of middle cerebral artery and circle of Willis using 2D phase-contrast MRI imaging [PDF]

Frontiers in Neuroscience
IntroductionRecently, it was proposed that CSF flow comprises a critical part of the glymphatic system, playing a role in various brain abnormalities from Alzheimer’s disease to hydrocephalus.
Rosemarie Faustina D. Le, Christof Karmonik, Angelique S. Regnier-Golanov, Eugene V. Golanov, Gavin W. Britz   +4 more
doaj   +2 more sources

Prognostic analysis of endovascular mechanical thrombectomy in stroke patients with acute internal carotid artery obstruction based on circle of Willis variation [PDF]

Frontiers in Neurology
ObjectiveEndovascular mechanical thrombectomy (EVMT) is widely employed in patients with acute intracranial carotid artery occlusion (AIICAO). This study aimed to predict the outcomes of EVMT following AIICAO by utilizing anatomic classification of the ...
Tianlun Qiu, Huagang Luo, Wuqiao Bao
doaj   +2 more sources

Presence of anatomical variations of the circle of Willis in patients undergoing surgical treatment for ruptured intracranial aneurysms [PDF]

Vojnosanitetski Pregled, 2009
Background/Aim. The presence of aneurysmal changes on the brain blood vessels has been subject to numerous research. This study investigated the relation between ruptured aneurysms and anatomical configuration of the Circle of Willis, with the purpose to
Stojanović Nebojša, Stefanović Ivan, Ranđelović Saša, Mitić Rade, Bošnjaković Petar, Stojanov Dragan   +5 more
doaj   +1 more source

RNF213 p.R4810K (c.14429G > A) Variant Determines Anatomical Variations of the Circle of Willis in Cerebrovascular Disease

Frontiers in Aging Neuroscience, 2021
IntroductionDysregulation of the RING finger protein 213 (RNF213) gene impairs vascular formation in experimental animal models. In addition, vascular abnormalities in the circle of Willis are associated with cerebrovascular disease.
Futoshi Eto, Futoshi Eto, Takeshi Yoshimoto, Shuhei Okazaki, Shuhei Okazaki, Kunihiro Nishimura, Shiori Ogura, Shiori Ogura, Eriko Yamaguchi, Eriko Yamaguchi, Kazuki Fukuma, Satoshi Saito, Kazuo Washida, Masatoshi Koga, Kazunori Toyoda, Takaaki Morimoto, Takaaki Morimoto, Hirofumi Maruyama, Akio Koizumi, Akio Koizumi, Masafumi Ihara   +20 more
doaj   +1 more source

Normal Variants of the Circle of Willis in patients undergoing CT Angiography

Journal of College of Medical Sciences-Nepal, 2017
Background & Objectives: The Circle of Willis represents the important anastomotic cerebral vessels at the base of the brain. Variation in the Circle of Willis is common. A complete or normal Circle of Willis varies widely in the literature.
V Natraj Prasad, Pramod Kumar Chhetri, Arun Paudel   +2 more
doaj   +1 more source

Morphometric and Morphological Analysis of the Circle of Willis and its Variants in Adult Human Cadaver: A Retrospective Observational Study [PDF]

International Journal of Anatomy Radiology and Surgery
Introduction: Knowledge of variations in the vascular anatomy of the circle of Willis is necessary for radiologists and neurosurgeons performing radiological procedures and intracranial surgeries.
Manickavasuki Kandavadivelu, Kalaivani Gunasekaran, Praveena Ravichandran, Amudha Govindarajan, Devu Vijayan   +4 more
doaj   +1 more source

Evidence and Mechanisms for Embolic Stroke in Contralateral Hemispheres From Carotid Artery Sources

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023
Background Disambiguation of embolus pathogenesis in embolic strokes is often a clinical challenge. One common source of embolic stroke is the carotid arteries, with emboli originating due to plaque buildup or perioperatively during revascularization ...
Ricardo Roopnarinesingh, Michelle Leppert, Debanjan Mukherjee   +2 more
doaj   +1 more source

Isolated left vertebral artery and its consequences for aortic arch repair

Journal of Vascular Surgery Cases and Innovative Techniques, 2019
A left vertebral artery (LVA) originating directly from the aortic arch is the second most common supra-aortic branching anomaly. This isolated LVA can also terminate in the posterior inferior cerebellar artery without contributing to the circle of ...
Emma van der Weijde, MD, Olaf J. Bakker, MD, PhD, Uday Sonker, MD, Robin H. Heijmen, MD, PhD   +3 more
doaj   +1 more source