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  1. C100 医学部/医学系研究科
  2. C100b 紀要
  3. Nagoya journal of medical science
  4. 81(4)

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.81.4.629
a00910e3-a905-498b-99aa-f3f54c19e09f
名前 / ファイル ライセンス アクション
09_Imai.pdf 09_Imai.pdf (8.9 MB)
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
著者 Imai, Tasuku

× Imai, Tasuku

WEKO 94432

Imai, Tasuku

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Izumi, Takashi

× Izumi, Takashi

WEKO 94433

Izumi, Takashi

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Isoda, Haruo

× Isoda, Haruo

WEKO 94434

Isoda, Haruo

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Ishiguro, Kenta

× Ishiguro, Kenta

WEKO 94435

Ishiguro, Kenta

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Mizuno, Takashi

× Mizuno, Takashi

WEKO 94436

Mizuno, Takashi

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Tsukada, Tetsuya

× Tsukada, Tetsuya

WEKO 94437

Tsukada, Tetsuya

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Kropp, Asuka

× Kropp, Asuka

WEKO 94438

Kropp, Asuka

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Ito, Masashi

× Ito, Masashi

WEKO 94439

Ito, Masashi

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Nishihori, Masahiro

× Nishihori, Masahiro

WEKO 94440

Nishihori, Masahiro

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Ishida, Mamoru

× Ishida, Mamoru

WEKO 94441

Ishida, Mamoru

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Tamari, Yosuke

× Tamari, Yosuke

WEKO 94442

Tamari, Yosuke

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Wakabayashi, Toshihiko

× Wakabayashi, Toshihiko

WEKO 94443

Wakabayashi, Toshihiko

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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 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.
内容記述タイプ Abstract
出版者
出版者 Nagoya University Graduate School of Medicine, School of Medicine
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
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 ISSN
収録物識別子 0027-7622
ISSN(Online)
収録物識別子タイプ ISSN
収録物識別子 2186-3326
書誌情報 Nagoya Journal of Medical Science

巻 81, 号 4, p. 629-636, 発行日 2019-11
著者版フラグ
値 publisher
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