血液的超声衰减研究

本文从细胞声吸收、细胞相对血浆的粘滞运动和细胞声散射三种机制出发,论讨了血液中细胞级结构对其超声衰减的贡献,与实验结果有较好的符合。分析表明,细胞级结构对超声衰减的贡献中,细胞吸收占主导地位,相对粘滞运动损耗贡献不超过15％,而细胞引起的声散射可以略而不计。

ULTRASONIC ATTENUATION OF NORMAL BLOOD

The ultrasonic attenuation occuring at the cell-level structure of blood due to absorption of cells, relative viscous motion of cells to the plasma and the sound scattering by cells is discussed in this paper.The theoretical prediction is well confirmed by experimental data.The analysis shows that in the contribution to the ultrasonic attenuation by the cellular structure of blood,the absorption of cells is of most importance, the part of viscous loss is below 15% and the sound scattering of cells is negligible.