学科主题基础医学
Velocity profiles of pulsatile blood flow in arterioles with bifurcation and confluence in rat mesnetery measured by particle image velocimetry
Nakano, A; Sugii, Y; Minamiyama, M; Seki, J; Niimi, H
关键词bifurcation and confluence high-speed videomicroscopy mesenteric arterioles microcirculation particle image velocimetry (PlV) red blood cell (RBC) velocity profile
刊名JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING
2005-12-01
48期:4页:444-452
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Engineering, Manufacturing ; Engineering, Mechanical
研究领域[WOS]Engineering
关键词[WOS]RED-CELL VELOCITY ; ENDOTHELIAL SURFACE-LAYER ; CEREBRAL MICROVESSELS ; EPIFLUORESCENCE MICROSCOPY ; RABBIT MESENTERY ; CAPILLARY-FLOW ; PIV TECHNIQUE ; IN-VIVO ; MICROCIRCULATION ; VENULES
英文摘要

Blood flow velocity profile in microvessels is essential for in vivo studies of substance exchange between blood and tissue. This paper was aimed to investigate the temporal and spatial variations in the velocity profile of red blood cell (RBC) flow in arterioles with both bifurcation and confluence in the rat mesentery, using a particle image velocimetry (PIV). The microcirculation in rat mesentery was observed under a microscopic system with a high-speed digital camera. The images of RBCs flow in microvessels were recorded simultaneously with the arterial blood pressure. Based on the high-speed video images, instantaneous velocity vectors of RBCs in arterioles with bifurcation and confluence were evaluated using a high spatial-resolution PIV algorithm. Then, the time-averaged and ensemble-averaged velocity profiles over the cross-section were calculated from the proximal through the bifurcation to the distal to the confluence. The velocity profile of RBCs showed two peaks at bifurcation and confluence, respectively. The double peaks were most marked at the apex of bifurcation, but not so much marked at the confluence. The variation of centerline velocity showed that the length of vessel under the influence of bifurcation or confluence, was approximately 1.5 times the diameter at the proximal to the apex of bifurcation, but its length was reduced significantly at the distal of confluence.

语种英语
WOS记录号WOS:000235021800008
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/59405
Collection北京大学基础医学院_北大医学部天士力微循环研究中心
作者单位1.Natl Cardiovasc Ctr, Inst Res, Suita, Osaka 5658565, Japan
2.Univ Tokyo, Dept Quantum Engn & Syst Sci, Bunkyo Ku, Tokyo 1138656, Japan
3.Hiroshima Int Univ, Dept Clin Engn, Higashihiroshima, Hiroshima 7240695, Japan
4.Peking Univ, Hlth Sci Ctr, Tasly Microcirculat Res Ctr, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Nakano, A,Sugii, Y,Minamiyama, M,et al. Velocity profiles of pulsatile blood flow in arterioles with bifurcation and confluence in rat mesnetery measured by particle image velocimetry[J]. JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING,2005,48(4):444-452.
APA Nakano, A,Sugii, Y,Minamiyama, M,Seki, J,&Niimi, H.(2005).Velocity profiles of pulsatile blood flow in arterioles with bifurcation and confluence in rat mesnetery measured by particle image velocimetry.JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING,48(4),444-452.
MLA Nakano, A,et al."Velocity profiles of pulsatile blood flow in arterioles with bifurcation and confluence in rat mesnetery measured by particle image velocimetry".JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING 48.4(2005):444-452.
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