Biosensors for subsurface detection of biological anomalies including tumors

In recent years microwave imaging has been applied to the detection of tumors in biological structures. In breast cancer detection, we model a breast the same way as in Fear et al. (2000). Then we illuminate it using two spheres at a distance that is neither too far nor too close to it. We analyze the frequency response of the scattered waves when tumor is present and when we have a normal breast without tumor. Though the work we report here is for breast cancer, our method works for other biological anomalies including cancer.