Cerebrovascular geometry in the anterior circulation: an analysis of diameter, length and the vessel taper

Ansaar, T; Hogg, Jeffery P.; Cline, Brendan C.; Hobbs, Gerald R.

doi:10.1136/neurintsurg-2012-010314

Cited by 91 publications

(78 citation statements)

References 19 publications

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“…Wollschlaeger et al (37) reported angiographic measurements of 2.03 mm for ACA, 2.87 mm for MCA and 3.7 mm for ICA. A recent study on cerebrovascular geometry in the anterior circulation reported mean diameter of 5 ± 0.6 mm and 3.6 ± 0.4 mm for cavernous ICA and the ICA terminus measured with computed tomography angiography (28). They also reported mean diameters of 3.1 ± 0.4 mm and 2.4 ± 0 mm at the MCA and M2 origins respectively.…”

Section: Discussionmentioning

confidence: 90%

“…Knowledge of cerebrovascular dimensions is crucial for the performance of neurovascular procedures (28). Angiographic normative data about the diameters of cerebral arteries in adults is reported in detail in the literature (19,24,28,32,34) with endovascular instruments such as stents being manufactured based on these measurements.…”

Section: Introductionmentioning

confidence: 99%

“…In spite of its relative paucity, endovascular treatment of pediatric cerebral aneurysms has been performed for more than 25 years and is becoming increasingly more common (4). As endovascular aneurysm treatment shifted towards more liberal use of endoluminal prostheses such as stents and flow diverters, a need for better knowledge of angiographic measurements of cerebral artery diameters emerged as these devices rely on meticulous measurement of the diameter of the artery harboring the aneurysm (28). Due to the direct relation of arterial size with vascular demand, normative arterial diameters cannot be inferred from angiograms performed on children for the treatment of high flow lesions (such as arteriovenous malformations or hypervascular tumors) that are the forerunners of referrals for pediatric cerebral angiograms.…”

Section: Introductionmentioning

confidence: 99%

“…Angiographic normative data about the diameters of cerebral arteries in adults is reported in detail in the literature (19,24,28,32,34) with endovascular instruments such as stents being manufactured based on these measurements. On the other hand, normative values and growth trends of these vessels are largely unknown in the pediatric age group.…”

Section: Introductionmentioning

confidence: 99%

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Angiographic morphometry of internal carotid circulation in turkish children

Arat¹,

Arat²,

Aydın³

2015

Turkish Neurosurgery

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AIm: Knowledge of cerebrovascular morphology is integral in planning neuroendovascular interventions, especially for procedures involving placement of stents, flow diverters or stentrievers. There is insufficient data on angiographic normative values of cerebral circulation in the pediatric age group since angiograms are uncommonly performed in children except for arteriovenous malformations in which arterial dimensions are larger than normal. We aimed to measure the diameters of internal carotid circulation (ICC) arteries on digital subtraction angiograms of pediatric patients and determine the growth trends. mATeRIAL and meTHods: This is a retrospective cross-sectional study measurements of ICC arteries of 64 pediatric patients (4 -122 months) with retinoblastoma undergoing intra-arterial chemotherapy.ResuLTs: Petrous, cavernous, supraclinoid and choroidal segments of internal carotid artery (ICA) and anterior cerebral artery (ACA) diameters had significant correlation with age. Most of the growth was noted in the first 36-48 months of life. Middle cerebral artery (MCA) diameter did not show significant correlation with age. 87% of the adult diameter of the MCA was attained in the first 6 months of life. ICC arteries reached 81% to 99% of adult sizes in the first 48 months of life. On the contrary, the main iliac artery was only 59% of the adult diameter at this age group.CoNCLusIoN: Use of current intracranial stents in children appears tolerable due to the growth pattern of ICC arteries. Based on this data, the current armamentarium of intracranial stents or stent-like devices is sufficient to cover the need in the pediatric population.KeywoRds: Cerebral arteries, Internal carotid artery, Diameter, Endovascular treatment, Stent, Flow diverter, Morphometry ÖZ AmAÇ: Nöroendovasküler girişimlerde, özellikle de stent, akım yönlendirici ve benzeri cihazlar kullanıldığında, serebrovasküler morfolojinin bilinmesi önemlidir. Serebral anjiyografi, arteryel boyutların normalden daha büyük olduğu arteriovenöz malformasyonlar dışında çocuklarda sık olarak yapılmadığından, pediatrik yaş gurubunda serebral dolaşımın anjiyografik normotif değerleri hakkında yeterli bilgi bulunmamaktadır. Çocuk hastalarda internal karotid dolaşımı (İKD) arterlerinin çaplarını ölçüp büyüme eğilimlerini belirlemeyi amaçladık. yÖNTem ve GeReÇLeR: Çalışmamız, retinoblastom için intraarteryel kemoterapi yapılan 64 çocuk hastada (yaş: 4 -122 ay) İKD arterlerinin ölçüldüğü retrospektif kesitsel bir çalışmadır.BuLGuLAR: İnternal karotid arterin petröz, kavernöz, supraklinoid ve koroidal segmentleriyle anterior serebral arter (ASA) çapları yaş ile anlamlı korelasyon göstermekteydi. Damarsal büyümenin 36-48 ayda tamamlanmaya yaklaştığı saptandı. Orta serebral arter (OSA) çapı yaş ile anlamlı korelasyon göstermedi. Bu arterde ilk 6 ayda arteryel çapın %87'sine ulaşıldığı izlendi. İKD arterlerinin 48 ay itibarıyla erişkin boylarının % 81-99'una ulaştığı görüldü. Bunun aksine ana iliak arter bu yaş gurubunda erişkin çapının sadece % 59'uydu. soN...

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Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Angiographic morphometry of internal carotid circulation in turkish children

Arat¹,

Arat²,

Aydın³

2015

Turkish Neurosurgery

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“…Interestingly, clots with lower HU were less likely to recanalize compared to clots with higher HU [14,15] Problems with detection of the hyperdense artery sign include false positives and false negatives. The average width of the middle cerebral artery (MCA; the most common site of occlusion in AIS) is 3-4 mm [16]. Scans that [10] exceed this width and are of average signal may potentially miss detecting the hyperdense sign because of the phenomenon of partial volume averaging.…”

Section: Clot Densitymentioning

confidence: 99%

Multimodality CT based imaging to determine clot characteristics and recanalization with intravenous tPA in patients with acute ischemic stroke

et al. 2017

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Acute ischemic stroke (AIS) is a common neurovascular emergency causing significant burden to society. Currently the main focus of AIS treatment is to restore blood flow to at risk brain tissue. For the last twenty years, intravenous tissue plasminogen activator (tPA) was the only proven therapy for patients with AIS. More recently, five randomized clinical trials established the efficacy of endovascular therapy with or without intravenous tPA in selected patient populations with AIS. Not all stroke patients benefit from intravenous tPA or endovascular treatment. Nonetheless, the concept of early recanalization of occluded arteries resulting in better clinical outcomes is well established. In this focused review, we will discuss how imaging modalities such as Non-Contrast CT, CT-Angiography, and CT-Perfusion can potentially help physicians determine which patients are likely to recanalize early with intravenous tPA and therefore benefit from this therapy.

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Branching Pattern of the Cerebral Arterial Tree

Helthuis

Doormaal

Hillen

et al. 2018

The Anatomical Record

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Quantitative data on branching patterns of the human cerebral arterial tree are lacking in the 1.0–0.1 mm radius range. We aimed to collect quantitative data in this range, and to study if the cerebral artery tree complies with the principle of minimal work (Law of Murray). To enable easy quantification of branching patterns a semi‐automatic method was employed to measure 1,294 bifurcations and 2,031 segments on 7 T‐MRI scans of two corrosion casts embedded in a gel. Additionally, to measure segments with a radius smaller than 0.1 mm, 9.4 T‐MRI was used on a small cast section to characterize 1,147 bifurcations and 1,150 segments. Besides MRI, traditional methods were employed. Seven hundred thirty‐three bifurcations were manually measured on a corrosion cast and 1,808 bifurcations and 1,799 segment lengths were manually measured on a fresh dissected cerebral arterial tree. Data showed a large variation in branching pattern parameters (asymmetry‐ratio, area‐ratio, length‐radius‐ratio, tapering). Part of the variation may be explained by the variation in measurement techniques, number of measurements and location of measurement in the vascular tree. This study confirms that the cerebral arterial tree complies with the principle of minimum work. These data are essential in the future development of more accurate mathematical blood flow models. Anat Rec, 302:1434–1446, 2019. © 2018 The Authors. The Anatomical Record published by Wiley Periodicals, Inc. on behalf of American Association of Anatomists.

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Cerebrovascular geometry in the anterior circulation: an analysis of diameter, length and the vessel taper

Cited by 91 publications

References 19 publications

Angiographic morphometry of internal carotid circulation in turkish children

Angiographic morphometry of internal carotid circulation in turkish children

Multimodality CT based imaging to determine clot characteristics and recanalization with intravenous tPA in patients with acute ischemic stroke

Branching Pattern of the Cerebral Arterial Tree

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