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Vascular responses to abrupt blood flow change after bypass surgery for complex intracranial aneurysms.
https://repo.qst.go.jp/records/74868
https://repo.qst.go.jp/records/74868e62cdb1b-181f-4fc3-b9ec-c15fa4a2434b
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-03-20 | |||||
| タイトル | ||||||
| タイトル | Vascular responses to abrupt blood flow change after bypass surgery for complex intracranial aneurysms. | |||||
| 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 | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Kataoka, Hiroharu
× Kataoka, Hiroharu× Makino, Yasuhide× Takanishi, Kiyofumi× Kimura, Yohei× Takamura, Kenji× Yagi, Takanobu× Iguchi, Satoshi× Yamamoto, Akihide× Iida, Hidehiro× Ogata, Soshiro× Nishimura, Kunihiro× Nakamura, Masanori× Umezu, Mitsuo× Iihara, Koji× C Takahashi, Jun× Iguchi, Satoshi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | BACKGROUND:Bypass surgery for complex intracranial aneurysms (IAs) results in drastic blood flow changes in intracranial arteries. The aim of the study was to elucidate how vessels adapt to blood flow changes after bypass surgery with phase-contrast magnetic resonance imaging (PC-MRI). METHODS:This is a prospective observational study to assess changes of the blood flow in intracranial arteries after bypass surgery for IAs. Flow rates and vessel diameters were measured with PC-MRI in 52 intracranial arteries of 7 healthy volunteers and 31 arteries of 8 IA patients who underwent bypass surgery. Wall shear stress (WSS) was calculated with the Hagen-Poiseuille formula. In 18 arteries of 5 patients, the same measurement was performed 1, 3, and 12 months after surgery. RESULTS:PC-MRI showed a strong positive correlation between the flow rate and the third power of vessel diameter in both healthy volunteers (r = 0.82, P < 0.0001) and IA patients (r = 0.90, P < 0.0001), indicating the constant WSS. Of the 18 arteries in 5 patients, WSS increased in 7 arteries and decreased in 11 arteries immediately after surgery. In the WSS-increased group, WSS returned to the preoperative value in the third postoperative month. In the WSS-decreased group, WSS increased in the 12th month, but did not return to the preoperative level. CONCLUSIONS:In a physiological state, WSS was constant in intracranial arteries. Changed WSS after bypass surgery tended to return to the preoperative value, suggesting that vessel diameter and flow rate might be controlled so that WSS remains constant. |
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| 書誌情報 |
Acta neurochirurgica 巻 160, 号 10, p. 1945-1953, 発行日 2018-10 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0001-6268 | |||||
| PubMed番号 | ||||||
| 識別子タイプ | PMID | |||||
| 関連識別子 | 30101391 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1007/s00701-018-3653-2 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://link.springer.com/article/10.1007/s00701-018-3653-2 | |||||
