A new gel phantom used for three dimensional measurement of the local SAR

A gel phantom containing non-ionic surface active agent, salt and sucrose which shows almost the same dielectric properties as those of biological tissue and good transparency at room temperature has been developed. When the phantom is irradiated by an electromagnetic wave, the region where electromagnetic power is absorbed becomes white and opaque. Hence, the phantom is useful for observing or measuring the local SAR distribution in three-dimensions. The method for fabricating the phantom and a typical example applied to the electromagnetic environmental problem are presented.