Frontier approach research on the detection of early breast tumor

The accident and mortality ratio of various cancers are increasing continually reported by a lot of medical literatures in every year, and that more early diagnose more surviving is also the truth in the breast cancer detection and therapy field. Developing a detection instrument about the early breast cancer is the aim of this paper. The microwave-induced thermoacoustic tomography (MITAT) is an innovative technology for tumor detection. Under the microwave irradiation condition, the rapid increase in temperature causes the instantaneous pressure, resulting in the ultrasonic signal, therefore the method has both advantages of highcontrast in microwave image and high-resolution in ultrasonic image. In this paper, with the circular scanning probe method, the system achieves the thermoacoustic images of the different size tumor phantom and the complex tumor phantom of different conductivity, and the experimental results show that the system can carry out the above test samples with high contrast and high resolution imaging