用于人体皮下肿瘤探测的优化喇叭探头

Optimum horn probe for detecting human body's subcutaneous tumor

讨论应用微波探测人体皮下肿瘤时的一种优化喇叭探头。采用 FDTD法分析了喇叭探头的微波反射特性 ,获得了多组探头的探测深度与喇叭结构参数之间的关系曲线 ,并进一步确定了一种优化的喇叭探头结构。用此种探头检测人体皮下肿瘤的探测效果比开口矩形波导探头要好得多 ;对于同样的实体瘤 ,探测深度接近开口矩形波导探头的 1 .5倍。这对人体表层组织的微波成像及医用探头的设计具有重要的意义。

A optimum horn probe for detecting human body's subcutaneous tumor is presented. The microwave reflection characteristics of the horn probe are analyzed by using FDTD method. The relative curves of the detecting depth of the probe deponed the structure parameters of the probe are shown and the optimum structure of horn is obtained. It has much better detecting depth and distinguishing ability than other waveguide probe. For the same entity tumor, its detecting depth is nearly 1.5 time than that of normal waveguide probe. These results are very important to microwave imaging of the human body epidermis tissues and to the design of probe used in medicines.