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Factors influencing blood flow resistance from a large internal carotid artery aneurysm revealed by a computational fluid dynamics model
https://doi.org/10.18999/nagjms.81.4.629
https://doi.org/10.18999/nagjms.81.4.629a00910e3-a905-498b-99aa-f3f54c19e09f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
09_Imai.pdf (8.9 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-11-26 | |||||
| タイトル | ||||||
| タイトル | Factors influencing blood flow resistance from a large internal carotid artery aneurysm revealed by a computational fluid dynamics model | |||||
| 言語 | en | |||||
| 著者 |
Imai, Tasuku
× Imai, Tasuku× Izumi, Takashi× Isoda, Haruo× Ishiguro, Kenta× Mizuno, Takashi× Tsukada, Tetsuya× Kropp, Asuka× Ito, Masashi× Nishihori, Masahiro× Ishida, Mamoru× Tamari, Yosuke× Wakabayashi, Toshihiko |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報Resource | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
| 権利情報 | Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | large internal carotid artery aneurysm | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | computational fluid dynamics | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | pressure loss | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Hyperperfusion syndrome occurs after treatment of a large or giant cerebral aneurysm. Recently, flow-diverter stent placement has emerged as an effective treatment method for a large cerebral aneurysm, but postoperative ipsilateral delayed intraparenchymal hemorrhage occurs in a minority of cases. The mechanism underlying delayed intraparenchymal hemorrhage is not established, but one possibility is hyperperfusion syndrome. The incidence of delayed intraparenchymal hemorrhage appears to be higher for giant aneurysms; hence, we speculated that large/giant aneurysms may create flow resistance, and mitigation by flow-diverter stent deployment leads to hyperperfusion syndrome and delayed intraparenchymal hemorrhage. The purpose of this study was to identify aneurysm characteristics promoting flow resistance by the analysis of pressure loss in an internal carotid artery paraclinoid aneurysm model using computational fluid dynamics. A virtual U-shaped model of the internal carotid artery siphon portion was created with a spherical aneurysm of various angles, body diameters, and neck diameters. Visualization of streamlines, were calculated of pressure loss between proximal and distal sides of the aneurysm, and vorticity within the aneurysm were calculated. The pressure loss and vorticity demonstrated similar changes according to angle, peaking at 60°. In contrast, aneurysm diameter had little influence on pressure loss. Larger neck width, however, increases pressure loss. Our model predicts that aneurysm location and neck diameter can increase the flow resistance from a large internal carotid artery aneurysm. Patients with large aneurysm angles and neck diameters may be at increased risk of hyperperfusion syndrome and ensuing delayed intraparenchymal hemorrhage following flow-diverter stent treatment. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | Nagoya University Graduate School of Medicine, School of Medicine | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| ID登録 | ||||||
| ID登録 | 10.18999/nagjms.81.4.629 | |||||
| ID登録タイプ | JaLC | |||||
| 関連情報 | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.med.nagoya-u.ac.jp/medlib/nagoya_j_med_sci/814.html | |||||
| ISSN（print） | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0027-7622 | |||||
| ISSN（Online） | ||||||
| 収録物識別子タイプ | EISSN | |||||
| 収録物識別子 | 2186-3326 | |||||
| 書誌情報 |
en : Nagoya Journal of Medical Science 巻 81, 号 4, p. 629-636, 発行日 2019-11 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
