EM-wave characterization of tumor morphology

With the standard use of magnetic resonance imaging, the non-invasive visualization of human soft tissue became possible. Of interest to this contribution is the use of MRI in cancer detection. In recent years other methods have been proposed that are based on electromagnetic wave scattering, most notably in the microwave region. In this paper we present results on the characterization of an irregular object. We show how to extract several parameters useful in creating a global description of the object. In modern implementations the original assumption of a "compound" object interacting with electromagnetic radiation is retained but the dipoles are replaced by a collection of small dielectric spheres. The internal and external fields for each one of the spheres are calculated from Mie scattering. Considering the interactions between each one of the spheres in the "compound" object and using some of the considerations of the effective medium theory the internal and external electric fields are calculated.