Essential Neurovascular Anatomy

Harrigan, Mark R.; Deveikis, John P.

doi:10.1007/978-1-61779-946-4_1

Cited by 8 publications

(4 citation statements)

References 224 publications

(223 reference statements)

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“…Agenesis occurs in less than 0.01% of the population (estimated data) [12,13], while bilateral absence of the artery is seen in less than 10% of cases of agenesis [14,15]. Prevalence of hypoplasia is 0.079% [14,15]. In retrospective analysis of a series of MR and angiographic examinations either the absence or hypoplasia of ICA was diagnosed in 0.13% [15].…”

Section: Variations Of Internal Carotid Arterymentioning

confidence: 99%

“…Rarely, ICA may originate directly from the aorta [14]. It may give lateral branches: ascending pharyngeal artery, superior thyroid artery, persistent stapedial artery or carotid-vertebrobasilar anastomoses.…”

Section: Variations Of Internal Carotid Arterymentioning

confidence: 99%

“…It may give lateral branches: ascending pharyngeal artery, superior thyroid artery, persistent stapedial artery or carotid-vertebrobasilar anastomoses. Kinking and looping of the extracranial part of internal carotid artery occur in 15% of angiograms [14]. …”

Section: Variations Of Internal Carotid Arterymentioning

confidence: 99%

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Variants of cerebral arteries – anterior circulation

2013

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SummaryAdvances in imaging techniques allow for in vivo identification of abnormalities and normal variants of cerebral arteries. These arterial variations can be asymptomatic and uncomplicated although, some of them increase the risk of aneurysm formation, acute intracranial hemorrhage, play a vital role in neurosurgical planning or can be misidentified as serious pathology and medical errors. The goal of this publication is to discuss arterial anomalies of anterior cerebral circulation, their prevalence and demonstrate radiological images of some of those variants. In this article we will discuss variants of internal carotid artery, anterior cerebral artery, anterior communicating artery, middle cerebral artery, persistent stapedial artery and fenestration.

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Section: Variations Of Internal Carotid Arterymentioning

confidence: 99%

Section: Variations Of Internal Carotid Arterymentioning

confidence: 99%

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Variants of cerebral arteries – anterior circulation

2013

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“…Although digital subtraction angiography (ASD) remains the gold standard, computed tomography (CT) angiography is the main method for the initial assessment of cerebral circulation in acute stroke. Changes in cerebral circulation, particularly in the Willis polygon, are common [1,4]. It is important to know the appearance of these normal variants, their prevalence, and their clinical relevance.…”

Section: Introductionmentioning

confidence: 99%

Anatomy of Cerebral Arteries with Clinical Aspects in Patients with Ischemic Stroke

et al. 2022

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Computed tomography (CT) angiography is the main method for the initial evaluation of cerebral circulation in acute stroke. A comprehensive CT examination that includes a review of the three-dimensional and maximum-intensity projection images of the main intra and extracranial arteries allows the identification of most abnormalities and normal variants. Anatomical knowledge of the presence of any normal variants, such as fenestration, duplications, and persistent fetal arteries, plays a crucial role in the diagnosis and therapeutic management of acute stroke. However, the opposite is also true. In fact, sometimes it is the clinical picture that allows weighing how relevant or not the alteration found is. Therefore, in this review, a concise representation of the clinical picture attributable to a given arterial vessel will be included.

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Median pericallosal artery with double proximal origin: case report and clinical consideration

2017

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A 76-year-old male patient underwent magnetic resonance angiography of the head and neck vessels due to a recent incident of transitory ischemic attack. Cerebral angiogram uncovered the double proximal origin of the median unpaired pericallosal artery from the duplicated anterior communicating complex. The vessel curved around the corpus callosum and irrigated the paracentral lobule and the medial parietal cortical areas. The main trunks of the anterior cerebral arteries showed a branching pattern of the marginal callosal arteries, supplying orbital and frontal territories. The pre-communicating segment of the left anterior cerebral artery was identified as hypoplastic. The co-existence of the duplicated anterior communicating artery, with the medial pericallosal artery ascending from it, represents a potential danger for both open and endovascular surgery on the anterior circle of Willis as the deep half of this complex is obscured from the surgeon's eyes. Thorough interpretation of preoperative radiographic images and understanding of the developmental mechanisms of such variability are vital. The described branching arrangement of the anterior communicative region and possible mechanisms of migration with following fusion of the pericallosal arteries are discussed in this paper.

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Essential Neurovascular Anatomy

Cited by 8 publications

References 224 publications

Variants of cerebral arteries – anterior circulation

Variants of cerebral arteries – anterior circulation

Anatomy of Cerebral Arteries with Clinical Aspects in Patients with Ischemic Stroke

Median pericallosal artery with double proximal origin: case report and clinical consideration

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