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Quantification of Oscillatory Shear Stress from Reciprocating CSF Motion on 4D Flow Imaging.
http://hdl.handle.net/10422/00012942
http://hdl.handle.net/10422/0001294205818dae-ad61-4d07-b560-6ccfca3143c8
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-04-12 | |||||
タイトル | ||||||
タイトル | Quantification of Oscillatory Shear Stress from Reciprocating CSF Motion on 4D Flow Imaging. | |||||
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 |
YAMADA, Shigeki
× YAMADA, Shigeki× ITO, Hirotaka× ISHIKAWA, Masatsune× YAMAMOTO, Kazuo× YAMAGUCHI, Makoto× OSHIMA, Marie× NOZAKI, Kazuhiko |
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著者別名 |
山田, 茂樹
× 山田, 茂樹× 山本, 和雄× 野﨑, 和彦 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Background and purpose: Oscillatory shear stress could not be directly measured in consideration of direction, although cerebrospinal fluid has repetitive movements synchronized with heartbeat. Our aim was to evaluate the important of oscillatory shear stress in the cerebral aqueduct and foramen magnum in idiopathic normal pressure hydrocephalus by comparing it with wall shear stress and the oscillatory shear index in patients with idiopathic normal pressure hydrocephalus. |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Materials and methods: By means of the 4D flow application, oscillatory shear stress, wall shear stress, and the oscillatory shear index were measured in 41 patients with idiopathic normal pressure hydrocephalus, 23 with co-occurrence of idiopathic normal pressure hydrocephalus and Alzheimer-type dementia, and 9 age-matched controls. These shear stress parameters at the cerebral aqueduct were compared with apertures and stroke volumes at the foramen of Magendie and cerebral aqueduct. |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Results: Two wall shear stress magnitude peaks during a heartbeat were changed to periodic oscillation by converting oscillatory shear stress. The mean oscillatory shear stress amplitude and time-averaged wall shear stress values at the dorsal and ventral regions of the cerebral aqueduct in the idiopathic normal pressure hydrocephalus groups were significantly higher than those in controls. Furthermore, those at the ventral region of the cerebral aqueduct in the idiopathic normal pressure hydrocephalus group were also significantly higher than those in the co-occurrence of idiopathic normal pressure hydrocephalus with Alzheimer-type dementia group. The oscillatory shear stress amplitude at the dorsal region of the cerebral aqueduct was significantly associated with foramen of Magendie diameters, whereas it was strongly associated with the stroke volume at the upper end of the cerebral aqueduct rather than that at the foramen of Magendie. |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Conclusions: Oscillatory shear stress, which reflects wall shear stress vector changes better than the conventional wall shear stress magnitude and the oscillatory shear index, can be directly measured on 4D flow MR imaging. Oscillatory shear stress at the cerebral aqueduct was considerably higher in patients with idiopathic normal pressure hydrocephalus. |
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書誌情報 |
en : American journal of neuroradiology 巻 42, 号 3, p. 479-486 |
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出版者 | ||||||
出版者 | American Society of Neuroradiology | |||||
PMID | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 33478942 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.3174/ajnr.a6941 | |||||
関連名称 | 10.3174/ajnr.A6941 | |||||
権利 | ||||||
権利情報 | © 2021 by American Journal of Neuroradiology. | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal Article |