A Tissue Equivalent Phantom of the Human Torso for in vivo Biocompatible Communications

摘要

A tissue equivalent phantom (TEQ) was designed and constructed for in vivo biocompatible communication systems operating from 902-928 MHZ (Industrial, Scientific and Medical (ISM) band). The tissue equivalent phantom was designed by first noting the permittivity and conductivity of various tissues in the human torso using the FCC website http://www.fcc.gov/oet/rfsafety/dielectric.html, then by mixing the appropriate amounts of TX-151 (a polysaccharide gel), distilled water, sodium chloride and sucrose until the different regions of the phantom matched the parameters of the human torso Initial values were recorded based on previous work at lower frequencies and determined empirically at 915MHz. Computer modeling studies of human tissue were performed over the 902-928MHz band using a finite difference time domain computer modeling program (xFDTD, RECOM). Comparative analysis was conducted to determine the performance of the phantom. The phantom allows for testing and evaluation of very small antenna devices designed for in vivo diagnostics and monitoring.