一种快速微波断层成像方法的研究

Fast imaging method for microwave tomography

为便于微波断层成像技术的应用普及,针对乳腺肿瘤二维微波断层成像在个人计算机上的实现,提出了一种二次成像的快速方法。该方法首先采用一个粗网快速成像确定出目标图像位置,然后再使用在目标区域局部加密后的精细网,进行二次精确成像。基于仿真和实验数据的成像结果表明,与传统的采用全局精细网一次成像方法相比,这种二次成像方法可以大大降低成像计算的复杂度,节省80%左右的成像时间,同时可以获得等价的目标成像质量。

To facilitate the spread of 2D microwave tomography for breast cancer detection,proposed a fast imaging method in the realization of the personal computer,which used a coarse mesh to image and locate the site of target firstly,then built a locally refined fine mesh to image.It conducted imaging experiments using simulated and experimental data for breast cancer detection.The imaging results demonstrate that compared with the conventional imaging method using an overall fine mesh,the proposed twice imaging method can remarkably reduce the complexity of computation and save time-cost up to 80% while the equivalent image quality of target can be obtained.