Extraction of Calibration Waveform for Confocal Microwave Imaging for Early Breast Cancer Detection

Microwave imaging is a promising method for the early-stage breast cancer detection based on the large contrast of electric parameters between the tumor and the normal breast tissue. The tumor information can be obtained by comparing the ultra wideband signals propagating in the tumor-contained breast and tumor-free breast which used as the calibration waveform. In this study, a method of extracting calibration waveform during detection is proposed, in which the tumor is arranged randomly located in the breast tissue. The feasibility of this method in the actual detection is explained. The correct tumor information in the reconstructed breast image is achieved by using the extracted calibration waveform.