Improvement in the Electrical Characteristics of a High-hydrous Gel Phantom by the Addition of Inductive Materials at a Low-frequency Band

Abstract

　Phantoms that imitate the electrical properties of a living body are widely used for various examinations. This paper reports an improvement in the electrical characteristics of a high-hydrous gel phantom by the addition of carbon microcoils and carbon fiber at a low-frequency band. This improvement occurred because the CMC and carbon fiber functioned as an inductance inside the high-hydrous phantom at a low-frequency band. The relative permittivity of a phantom with 2 wt% added carbon fiber was in good agreement with that of human muscle in a frequency range of 5 to 30 MHz.