Numerical simulations of the blood flow in the patient-specific arterial cerebral circle region |
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Authors: | Piotr Reorowicz Damian Obidowski Przemyslaw Klosinski Wojciech Szubert Ludomir Stefanczyk Krzysztof Jozwik |
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Affiliation: | 1. Institute of Turbomachinery, Lodz University of Technology, Medical Apparatus Division, 219/223 Wolczanska Str., 90-924 Lodz, Poland;2. Norbert Barlicki Memorial Teaching Hospital No. 1, Medical University of Lodz, 22 Kopcinskiego Str., 90-153 Lodz, Poland |
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Abstract: | The Cerebral Circle Region, also known as the Circle of Willis (CoW), is a loop of arteries that form arterial connections between supply arteries to distribute blood throughout the cerebral mass. Among the population, only 25% to 50% have a complete system of arteries forming the CoW. 3D time-varying simulations for three different patient-specific artery anatomies of CoW were performed in order to gain a better insight into the phenomena existing in the cerebral blood flow. The models reconstructed on the basis of computer tomography images start from the aorta and include the largest arteries that supply the CoW and the arteries of CoW. Velocity values measured during the ultrasound examination have been compared with the results of simulations. It is shown that the flow in the right anterior artery in some cases may be supplied from the left internal carotid artery via the anterior communicating artery. The investigations conducted show that the computational fluid dynamic tool, which provides high resolution in both time and space domains, can be used to support physicians in diagnosing patients of different ages and various anatomical arterial structures. |
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Keywords: | ACA, anterior cerebral artery ACA L, left anterior cerebral artery ACA R, right anterior cerebral artery ACoA, anterior communicating artery BA, basilar artery CFD, computational fluid dynamics CoW, Circle of Willis CoW1, complete circle with the patient specific spatial distribution of arteries ICA L, left internal carotid artery ICA R, right internal carotid artery MCA L, left middle cerebral artery MCA R, right middle cerebral artery PCA L, left posterior cerebral artery PCA R, right posterior cerebral artery PCoA, posterior communicating artery VA L, left vertebral artery VA R, right vertebral artery |
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