提取管状生物组织特征参数的研究

STUDY ON EXTRACTING CHARACTERISTIC PARAMETERS OF A TUBULAR BIOLOGICAL TEXTURE

本文研究管状生物组织的特征参量的反演问题,用射线方法,并把管的反向散射简化为平面波入射到分层媒质的反射问题,给出了简化条件的判据(式(1));导出了在频域中管状生物组织特征参数的重构公式,分别用数值模拟和实验重构了猪的血管、骨管、气管的几何参数、理论结果得到实验的印证。

An inverse scattering problem of the tubular biological texture is studed, a geometrical acoustical method is used and a physical model which is the backscattering of a tube can be simplified into reflection of a plane wave on layered media under Eq.(1)conditions is put forward, so as to set up relationship formulas of the parameters of the tubular biological texture and the parameters of backscattering intensity spectra of the tube. A backscattering intensity spectra of a pig simple blood, borne and air vessel are obtained by simulation on computer and experiment respectively. The geometrical parameters of the compound tube are reconstructed using the relationship formulas. The theoretical results obtained by this method are supported by experiments.