Determination of Bolus Dielectric Constant for Optimum Coupling of Microwaves through Skin for Breast Cancer Imaging
Figure 4
Contours of constant reflection magnitude for lossless bolus matching to skin-covered fatty breast tissue. A perfect match occurs at 6.45 GHz for a pure dielectric bolus with dielectric constant of 135. The worst coupling occurs at 2.67 GHz, with reflection coefficient of 0.34 for the best choice dielectric constan .
