The rupture of an aneurysm can lead to a subarachnoid hemorrhage, which can be a fatal illness in a large percentage of cases. In treating aneurysm intravascular stenting is thought as a better option compared with clipping treatment. The treatment of cerebral aneurysm with a porous stent also has recently proposed as a minimally invasive way to prevent rupture and favor coagulation mechanism inside aneurysm. The analysis of a flow pattern with and without stent in cerebral aneurysm model was performed with Particle Image Velocimetry (PIV). Three types of stents were used in the present investigation and the porosity of stent 1, 2 and 3 is 80%, 74% and 64%, respectively. Reduced velocity, smaller average vorticity magnitude and different flow patterns inside aneurysm are observed when the three different proposed stents are used. The stent 3 (Porosity = 64%) decrease the magnitude of the velocity by 98% and change the flow pattern in the aneurysm. Our results show that not only the role of the porosity but also the stent shape affect the flow and help us understand the characteristic of stent designs.
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ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
July 24–29, 2011
Hamamatsu, Japan
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4440-3
PROCEEDINGS PAPER
PIV Measured Hemodynamic Study With Several Stents in a Cerebral Aneurysm Model for New Stent Design
Chang-Ho Yu,
Chang-Ho Yu
Tohoku University, Sendai, Miyagi, Japan
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Shuya Shida,
Shuya Shida
Tohoku University, Sendai, Miyagi, Japan
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Kaoru Matsumoto,
Kaoru Matsumoto
Tohoku University, Sendai, Miyagi, Japan
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Makoto Ohta
Makoto Ohta
Tohoku University, Sendai, Miyagi, Japan
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Chang-Ho Yu
Tohoku University, Sendai, Miyagi, Japan
Shuya Shida
Tohoku University, Sendai, Miyagi, Japan
Kaoru Matsumoto
Tohoku University, Sendai, Miyagi, Japan
Makoto Ohta
Tohoku University, Sendai, Miyagi, Japan
Paper No:
AJK2011-19025, pp. 2073-2080; 8 pages
Published Online:
May 25, 2012
Citation
Yu, C, Shida, S, Matsumoto, K, & Ohta, M. "PIV Measured Hemodynamic Study With Several Stents in a Cerebral Aneurysm Model for New Stent Design." Proceedings of the ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D. Hamamatsu, Japan. July 24–29, 2011. pp. 2073-2080. ASME. https://doi.org/10.1115/AJK2011-19025
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