Computational model of coil placement in cerebral aneurysm with using realistic coil properties
This study presents a computational mechanical model of coil placement in cerebral aneurysms with using realistic coil properties. The mechanical behavior of the coil is expressed by solving a variational problem including the kinetic and elastic energies of the coil and geometric constraints due to...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2015-12-01
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| Series: | Journal of Biomechanical Science and Engineering |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jbse/10/4/10_15-00555/_pdf/-char/en |
| _version_ | 1818532275664453632 |
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| author | Tomohiro OTANI Satoshi II Tomoyoshi SHIGEMATSU Toshiyuki FUJINAKA Masayuki HIRATA Tomohiko OZAKI Shigeo WADA |
| author_facet | Tomohiro OTANI Satoshi II Tomoyoshi SHIGEMATSU Toshiyuki FUJINAKA Masayuki HIRATA Tomohiko OZAKI Shigeo WADA |
| author_sort | Tomohiro OTANI |
| collection | DOAJ |
| description | This study presents a computational mechanical model of coil placement in cerebral aneurysms with using realistic coil properties. The mechanical behavior of the coil is expressed by solving a variational problem including the kinetic and elastic energies of the coil and geometric constraints due to the multiple contacts. The coil is discretized as a set of beam elements obeying Timoshenko beam theory, in which these elastic properties are determined based on the actual shape and material property of the coil. Numerical examples of the coil placement are presented for four cases with different coil properties in terms of the elastic property (hard and soft) and reference configurations (helical loop and complex loop) within the realistic range. These results exhibit the effects of the coil properties on not only the transition of the coil configuration during the placement process but also the contact force of the coil against the aneurysm wall which has a fatal risk of bleeding in the operation. The proposed computational model will assist surgeons to select the appropriate coil and coil deployment protocol to achieve the sufficient treatment effectiveness with minimizing the risk of bleeding in the view of the mechanical sense. |
| first_indexed | 2024-12-11T17:43:22Z |
| format | Article |
| id | doaj.art-09439d8648994e2fb8cb63d6d963211c |
| institution | Directory Open Access Journal |
| issn | 1880-9863 |
| language | English |
| last_indexed | 2024-12-11T17:43:22Z |
| publishDate | 2015-12-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Biomechanical Science and Engineering |
| spelling | doaj.art-09439d8648994e2fb8cb63d6d963211c2022-12-22T00:56:27ZengThe Japan Society of Mechanical EngineersJournal of Biomechanical Science and Engineering1880-98632015-12-0110415-0055515-0055510.1299/jbse.15-00555jbseComputational model of coil placement in cerebral aneurysm with using realistic coil propertiesTomohiro OTANI0Satoshi II1Tomoyoshi SHIGEMATSU2Toshiyuki FUJINAKA3Masayuki HIRATA4Tomohiko OZAKI5Shigeo WADA6Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka UniversityDepartment of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka UniversityDepartment of Neurosurgery, Graduate School of Medicine, Osaka UniversityDepartment of Neurosurgery, Graduate School of Medicine, Osaka UniversityDepartment of Neurosurgery, Graduate School of Medicine, Osaka UniversityDepartment of Neurosurgery, Graduate School of Medicine, Osaka UniversityDepartment of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka UniversityThis study presents a computational mechanical model of coil placement in cerebral aneurysms with using realistic coil properties. The mechanical behavior of the coil is expressed by solving a variational problem including the kinetic and elastic energies of the coil and geometric constraints due to the multiple contacts. The coil is discretized as a set of beam elements obeying Timoshenko beam theory, in which these elastic properties are determined based on the actual shape and material property of the coil. Numerical examples of the coil placement are presented for four cases with different coil properties in terms of the elastic property (hard and soft) and reference configurations (helical loop and complex loop) within the realistic range. These results exhibit the effects of the coil properties on not only the transition of the coil configuration during the placement process but also the contact force of the coil against the aneurysm wall which has a fatal risk of bleeding in the operation. The proposed computational model will assist surgeons to select the appropriate coil and coil deployment protocol to achieve the sufficient treatment effectiveness with minimizing the risk of bleeding in the view of the mechanical sense.https://www.jstage.jst.go.jp/article/jbse/10/4/10_15-00555/_pdf/-char/encomputational simulationbeam elementcoil placementcerebral aneurysm |
| spellingShingle | Tomohiro OTANI Satoshi II Tomoyoshi SHIGEMATSU Toshiyuki FUJINAKA Masayuki HIRATA Tomohiko OZAKI Shigeo WADA Computational model of coil placement in cerebral aneurysm with using realistic coil properties Journal of Biomechanical Science and Engineering computational simulation beam element coil placement cerebral aneurysm |
| title | Computational model of coil placement in cerebral aneurysm with using realistic coil properties |
| title_full | Computational model of coil placement in cerebral aneurysm with using realistic coil properties |
| title_fullStr | Computational model of coil placement in cerebral aneurysm with using realistic coil properties |
| title_full_unstemmed | Computational model of coil placement in cerebral aneurysm with using realistic coil properties |
| title_short | Computational model of coil placement in cerebral aneurysm with using realistic coil properties |
| title_sort | computational model of coil placement in cerebral aneurysm with using realistic coil properties |
| topic | computational simulation beam element coil placement cerebral aneurysm |
| url | https://www.jstage.jst.go.jp/article/jbse/10/4/10_15-00555/_pdf/-char/en |
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