Abstract
We review and summarize our research activities in fluid-structure interaction (FSI) analysis of cerebral aneurysms using anatomically realistic geometry models based on medical images. Emphasis is placed on influencing factors in computational FSI, and their role and clinical implications are discussed in terms of the wall shear stress (WSS). The key factors are: (1) arterial and aneurysm geometries, (2) wall structure modeling, (3) blood pressure, (4) outflow conditions and (5) inflow conditions. Among these, we find the impact of the arterial and aneurysm geometries to be the most significant. Blood pressure also has a significant impact on the WSS distribution; a hypothetical hypertensive blood pressure condition could help estimate the rupture risk for an aneurysm. We find the other three factors to be minor compared with the arterial and aneurysm geometries and blood pressure, although the level of influence could be unique to the middle cerebral artery aneurysms that we have been focusing on in our studies.
| Original language | English |
|---|---|
| Pages (from-to) | 324-340 |
| Number of pages | 17 |
| Journal | International Journal for Numerical Methods in Fluids |
| Volume | 65 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 2011 Jan |
| Externally published | Yes |
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Keywords
- Cerebral aneurysm
- Fluid-structure interaction
- Image-based modeling
- Middle cerebral artery
- Space-time method
ASJC Scopus subject areas
- Computational Mechanics
- Mechanics of Materials
- Mechanical Engineering
- Computer Science Applications
- Applied Mathematics
Cite this
Influencing factors in image-based fluid-structure interaction computation of cerebral aneurysms. / Torii, Ryo; Oshima, Marie; Kobayashi, Toshio; Takagi, Kiyoshi; Tezduyar, Tayfun E.
In: International Journal for Numerical Methods in Fluids, Vol. 65, No. 1-3, 01.2011, p. 324-340.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influencing factors in image-based fluid-structure interaction computation of cerebral aneurysms
AU - Torii, Ryo
AU - Oshima, Marie
AU - Kobayashi, Toshio
AU - Takagi, Kiyoshi
AU - Tezduyar, Tayfun E.
PY - 2011/1
Y1 - 2011/1
N2 - We review and summarize our research activities in fluid-structure interaction (FSI) analysis of cerebral aneurysms using anatomically realistic geometry models based on medical images. Emphasis is placed on influencing factors in computational FSI, and their role and clinical implications are discussed in terms of the wall shear stress (WSS). The key factors are: (1) arterial and aneurysm geometries, (2) wall structure modeling, (3) blood pressure, (4) outflow conditions and (5) inflow conditions. Among these, we find the impact of the arterial and aneurysm geometries to be the most significant. Blood pressure also has a significant impact on the WSS distribution; a hypothetical hypertensive blood pressure condition could help estimate the rupture risk for an aneurysm. We find the other three factors to be minor compared with the arterial and aneurysm geometries and blood pressure, although the level of influence could be unique to the middle cerebral artery aneurysms that we have been focusing on in our studies.
AB - We review and summarize our research activities in fluid-structure interaction (FSI) analysis of cerebral aneurysms using anatomically realistic geometry models based on medical images. Emphasis is placed on influencing factors in computational FSI, and their role and clinical implications are discussed in terms of the wall shear stress (WSS). The key factors are: (1) arterial and aneurysm geometries, (2) wall structure modeling, (3) blood pressure, (4) outflow conditions and (5) inflow conditions. Among these, we find the impact of the arterial and aneurysm geometries to be the most significant. Blood pressure also has a significant impact on the WSS distribution; a hypothetical hypertensive blood pressure condition could help estimate the rupture risk for an aneurysm. We find the other three factors to be minor compared with the arterial and aneurysm geometries and blood pressure, although the level of influence could be unique to the middle cerebral artery aneurysms that we have been focusing on in our studies.
KW - Cerebral aneurysm
KW - Fluid-structure interaction
KW - Image-based modeling
KW - Middle cerebral artery
KW - Space-time method
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U2 - 10.1002/fld.2448
DO - 10.1002/fld.2448
M3 - Article
VL - 65
SP - 324
EP - 340
JO - International Journal for Numerical Methods in Fluids
JF - International Journal for Numerical Methods in Fluids
SN - 0271-2091
IS - 1-3
ER -