Ultrasound scattering from blood with hematocrits up to 100%
Ultrasound scattering from blood with hematocrits up to 100%
复制标题
超声%20散射%20从%20血液%20与%20血细胞比容%20up%20至%20100%
DOI：
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发表时间：
1994
影响因子：
4.6
通讯作者：
R. Cobbold
中科院分区：
文献类型：
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作者：
L. Mo;I. Kuo;K. Shung;L. Ceresne;R. Cobbold
测量猪红细胞盐水悬浮液的后向散射系数，其血细胞比容高达约90%。研究发现，该系数在大约 15% 处达到峰值，但随后，与简单的“间隙理论”可能暗示的相反，它会平滑地衰减到零，而不会在高血细胞比容处显示另一个峰值。一维（1D）平板散射模型，其中每单位长度的平板数量代表血细胞比容，其厚度和声学特性与红细胞/血浆相似，也被用来研究反向散射功率和血细胞比容之间的关系。针对随机边界条件进行的蒙特卡罗模拟显示了与 3D 系统类似的关系。将实验数据与硬球堆积的 Percus-Yevick 理论进行比较，并将模拟数据与无限板的 Percus-Yevick 理论进行比较。<<ETX>>
The backscattering coefficient of saline suspensions of porcine red blood cells was measured for hematocrits up to about 90%. It was found that the coefficient peaks at approximately 15%, but then, contrary to what a simple "gap theory" might suggest, it decays smoothly to zero, without showing another peak at high hematocrits. A one-dimensional (1D) slab scattering model, in which the number of slabs per unit length represents the hematocrit and whose thickness and acoustical properties are similar to red cells/plasma, was also used to investigate the relation between the backscattered power and hematocrit. Monte-Carlo simulations performed for randomized boundary conditions show a similar relation to that of the 3D system. The experimental data is compared to the Percus-Yevick theory for the packing of hard spheres, and the simulated data is compared to the Percus-Yevick theory for infinite slabs.<<ETX>>