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Validation of Cerebral Blood Flow in Intracranial Aneurysms: CFD Versus 7 Tesla 4D PC-MRI

[+] Author Affiliations
P. Berg, G. Janiga, D. Stucht, O. Speck, D. Thévenin

University of Magdeburg, Magdeburg, Germany

Paper No. SBC2013-14289, pp. V01AT04A007; 2 pages
doi:10.1115/SBC2013-14289
From:
  • ASME 2013 Summer Bioengineering Conference
  • Volume 1A: Abdominal Aortic Aneurysms; Active and Reactive Soft Matter; Atherosclerosis; BioFluid Mechanics; Education; Biotransport Phenomena; Bone, Joint and Spine Mechanics; Brain Injury; Cardiac Mechanics; Cardiovascular Devices, Fluids and Imaging; Cartilage and Disc Mechanics; Cell and Tissue Engineering; Cerebral Aneurysms; Computational Biofluid Dynamics; Device Design, Human Dynamics, and Rehabilitation; Drug Delivery and Disease Treatment; Engineered Cellular Environments
  • Sunriver, Oregon, USA, June 26–29, 2013
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-5560-7
  • Copyright © 2013 by ASME

abstract

The number of numerical studies predicting blood flow in intracranial aneurysms is rapidly increasing over the last years. Due to a high spatial as well as temporal resolution, computational fluid dynamics (CFD) approaches offer a high potential to investigate flow interaction within the human vascular system. However, state-of-the-art methods still underlie several assumptions, e.g., rigid vessel walls, analytical boundary conditions or the consideration of blood as a single-phase continuous fluid. In consequence, the acceptance of CFD is still limited among a majority of physicians [1]. In order to overcome these reasonable doubts, simulations need to be validated via experiments. Therefore, two patient-specific intracranial aneurysms were measured by means of 7-Tesla magnetic resonance imaging (MRI). Afterwards, highly resolved numerical simulations were carried out and the peak-systolic velocity fields compared in a qualitative manner.

Copyright © 2013 by ASME

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