探测人体皮下肿瘤的微波成像新方法

A NEW METHOD OF MICROWAVE IMAGING FOR DETECTING HUMAN BODY'S SUBCUTANEOUS TUMOR

本文讨论一种人体皮下肿瘤的微波成像新方法.矩形波导探头与人体直接接触,利用时域有限差分法对人体组织模型进行计算得到探头的微波反射系数,发现在该模型中,肿瘤的大小和深度与反射系数之间可以用一种简单的公式表示,从而避开了在一般微波成像法中求解逆问题所遇到的困难,使探测结果快捷方便。

This paper discusses a new method for microwave imaging of the human body' s subcutaneous tumor. An open_ended rectangular waveguide probe directly touches with the human body's epidermis. By using FDTD method of calculation, the microwave reflection modulus is obtained. Then a simple resolve formula can be fitted to the relationship between the depth and diameter of the tumor with the reflection modulus in this analysis model. Thus, its inherence difficulties of the athwart problem can be avoided, and the detecting result is obtained quickly and conveniently. The results are significant for the microwave imaging of the human body’s epidermis tissue.