用显微粒子成像测速方法测量微观血液流动的速度分布轮廓

2019/11/29   下载量: 0

方案摘要

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应用领域 医疗/卫生
检测样本 其他
检测项目 物理指标>其他
参考标准 暂无

采用LaVision公司的MITAS型显微PIV测试系统,对微血管通道中的血液流动的速度场分布进行了测量。

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Micro-particle image velocimetry (μPIV) is used to visualize paired images of micro particles seeded in blood flows. The images are crosscorrelated to give an accurate velocity profile. A protocol is presented for μPIV measurements of blood flows in microchannels. At the scale of the microcirculation, blood cannot be considered a homogeneous fluid, as it is a suspension of flexible particles suspended in plasma, a Newtonian fluid. Shear rate, maximum velocity, velocity profile shape, and flow rate can be derived from these measurements. Several key parameters such as focal depth, particle concentration, and system compliance, are presented in order to ensure accurate, useful data along with examples and representative results for various hematocrits and flow conditions.

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