提取血管特征参数的研究

Study on extracting characteristic parameters of blood vessel

本文应用射线声学方法处理软管（模拟血管）散射声场，讨论了空域和频域中管的逆散射问题。测量了两种橡皮软管在空域和频域中散射场，并重构了管的内、外半径、声速、密度、衰减系数，相对误差小于５％。

A geometrical acoustical method is used to describe the scattered field by a soft-tube (simulating a blood vessel). Inverse scattering problem for the soft-tbe in the space domain and frequency domain is discussed. The scattered field is measured and the internal radius, external radius, velocity, densityand attenuation coefficient of the tube are reconstructed. The relative errors are less than 5 %.