低频振动的超声-磁电成像方法研究

Research on Ultrasonic-magnetoelectric Imaging Method with Low Frequency Vibration

本研究提出了低频振动的超声-磁电成像方法,是一种将超声成像与磁电成像相结合的双模成像法,可以同时获得组织的力学和电学信息。其基本原理为将生物体组织置于静磁场中,用低频振动激励组织内部使其发生振动,通过超声脉冲-回波法检测剪切波,可以获得组织内部的弹性结构;通过对表面电信号的检测,可以获取组织电导率信息。实验采用标准仿体和铜丝进行了验证性实验,实验结果表明该实验平台具有可行性与适用性。在此实验平台上对自制体模进行了初步探索,结果表明可以实现对自制体模的弹性和电导率的同步检测。

To propose a new ultrasonic - magnetoelectric imaging method with low frequency vibration, which is a dual modal func-tional imaging method combining acoustic and magneto - electric imaging methods. The basic principle of this method is to place a bio-logical tissue in a static maanetic field’ and excite the tissue by a low frequency vibration to produce internal vibration. The elastic in-formation of the tissue can be obtained by detecting the shear wave by ultrasonic pulse echo methomation can be obtained by detecting the surface electrical signals. A test experiment was carried out using the QA phantom and copperwire. The experimental results showed that the experimental platform had feasibility and ments were performed which synchronously detected the elasticity and conductivity edge of the custom.