The cerebral basal arterial network: morphometry of inflow and outflow components

Burlakoti, Arjun; Kumaratilake, Jaliya; Taylor, Jamie; Massy‐Westropp, Nicola; Henneberg, Maciej

doi:10.1111/joa.12604

Cited by 16 publications

(17 citation statements)

References 57 publications

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“…Previous studies show that flow rates are nearly identical in the left and right ICAs, but not necessarily in the VAs (Enzmann et al, ; Schöning et al, ; Sato & Sadamoto, ; van Ooij et al, ; Zhao et al, ). This aligns well with measurements of the nearly equal sizes of unpressurised cerebral arteries in the two hemispheres (Burlakoti et al, , ). Importantly, the ICA supplies the ACA and the MCA that service most of the cerebral cortex.…”

Section: Discussionsupporting

confidence: 89%

Blood flow rate and wall shear stress in seven major cephalic arteries of humans

Seymour

Snelling

2019

Journal of Anatomy

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Blood flow rate (trueQ˙) in relation to arterial lumen radius (ri) is commonly modelled according to theoretical equations and paradigms, including Murray’s Law (trueQ˙ ∝ ri3) and da Vinci’s Rule (trueQ˙ ∝ ri2). Wall shear stress (τ) is independent of ri with Murray’s Law (τ ∝ ri0) and decreases with da Vinci’s Rule (τ ∝ ri-1). These paradigms are tested empirically with a meta‐analysis of the relationships between trueQ˙ and ri in seven major arteries of the human cephalic circulation from 19 imaging studies in which both variables were presented. The analysis shows that trueQ˙ ∝ ri2.16 and τ ∝ ri-1.02, more consistent with da Vinci’s Rule than Murray’s Law. This meta‐analysis provides standard values for trueQ˙, ri and τ in the human cephalic arteries that may be a useful baseline in future investigations. On average, the paired internal carotid arteries supply 75%, and the vertebral arteries supply 25%, of total brain blood flow. The internal carotid arteries contribute blood entirely to the anterior and middle cerebral arteries and also partly to the posterior cerebral arteries via the posterior communicating arteries of the circle of Willis. On average, the internal carotid arteries provide 88% of the blood flow to the cerebrum and the vertebral arteries only 12%.

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Section: Discussionsupporting

confidence: 89%

Blood flow rate and wall shear stress in seven major cephalic arteries of humans

Seymour

Snelling

2019

Journal of Anatomy

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“…The standardization of our study was provided by this method. We achieved similar data to literature via the artery diameters of models printed in 3D printers 2,5,11) . These results reveal that 3D models obtained similarly can be in the same size as the anatomical size, and they can be used conveniently in clinical studies (Table 3).…”

Section: Discussionsupporting

confidence: 69%

Three-Dimensional Printing Assisted Preoperative Surgical Planning for Cerebral Arteriovenous Malformation

Uzunoglu

Kızmazoğlu

Hüsemoğlu

et al. 2021

J Korean Neurosurg Soc

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The aim of this study to investigate the benefits of patient-based 3-dimensional (3D) cerebral arteriovenous malformation (AVM) models for preoperative surgical planning and education. Methods : Fifteen patients were operated on for AVMs between 2015 and 2019 with patient-based 3D models. Ten patients' preoperative cranial angiogram screenings were evaluated preoperatively or perioperatively via patient-based 3D models. Two patients needed emergent surgical intervention; their models were solely designed based on their AVMs and used during the operation. However, the other patients who underwent elective surgery had the modeling starting from the skull base. These models were used both preoperatively and perioperatively. The benefits of patients arising from treatment with these models were evaluated via patient files and radiological data. Results : Fifteen patients (10 males and five females) between 16 and 66 years underwent surgery. The mean age of the patients was 40.0±14.72. The most frequent symptom patients observed were headaches. Four patients had intracranial bleeding; the symptom of admission was a loss of consciousness. Two patients (13.3%) belonged to Spetzler-Martin (SM) grade I, four (26.7%) belonged to SM grade II, eight (53.3%) belonged to SM grade III, and one (6.7%) belonged to SM grade IV. The mean operation duration was 3.44±0.47 hours. Three patients (20%) developed transient neurologic deficits postoperatively, whereas three other patients died (20%). Conclusion : Several technological innovations have emerged in recent years to reduce undesired outcomes and support the surgical team. For example, 3D models have been employed in various surgical procedures in the last decade. The routine usage of patient-based 3D models will not only support better surgical planning and practice, but it will also be useful in educating assistants and explaining the situation to the patient as well.

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“…Therefore, comparing sizes of arteries supplying right and left hemispheres should provide information about lateralisation of functions of areas they supply. Blood supply to each cerebral hemisphere comes from only three branches of the cerebral basal arterial network (CBAN) comprising the vertebrobasilar component and the anterior arterial circle of the brain [29] (circulus arteriosus cerebri). Therefore, although cerebral hemispheres are complex entities, it is easy to measure their total blood supply by adding together areas of the three cerebral arteries: anterior, middle and posterior.…”

Section: Introductionmentioning

confidence: 99%

Asymmetries of total arterial supply of cerebral hemispheres do not exist

Burlakoti

Kumaratilake

Taylor

et al. 2019

Heliyon

Self Cite

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BackgroundTotal blood supply to an organ, or its part, is proportional to its function. The aim of this project was to investigate whether there is a lateralisation of total functions of cerebral hemispheres by determining differences in the arterial blood supply to left and right cerebral hemispheres.MethodsDiameters of right and left anterior, middle and posterior cerebral arteries were measured at specific sites and cross-sectional areas calculated in 203 adult brains (51 donated and dissected brain specimens and 152 cerebral arterial Computed Tomography Angiography and Magnetic Resonance Angiography images).FindingsThe sample size was large enough to provide a power of detecting as significant differences of 4%, but neither of the average cross-sectional areas of right anterior, middle and posterior cerebral arteries were significantly different from those of the anterior, middle and posterior cerebral arteries of the left side. Furthermore, combined areas of the three right cerebral arteries were not significantly different from combined areas of the left three arteries. This clearly indicates that the blood supply into the right cerebral hemisphere is not different from that of the left cerebral hemisphere. Therefore, there is no total functional lateralisation between the two cerebral hemispheres.ConclusionBrain lateralisation, frequently discussed in the literature, does not deferentially influence the total activity levels of cerebral hemispheres.

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The cerebral basal arterial network: morphometry of inflow and outflow components

Cited by 16 publications

References 57 publications

Blood flow rate and wall shear stress in seven major cephalic arteries of humans

Blood flow rate and wall shear stress in seven major cephalic arteries of humans

Three-Dimensional Printing Assisted Preoperative Surgical Planning for Cerebral Arteriovenous Malformation

Asymmetries of total arterial supply of cerebral hemispheres do not exist

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