ELECTRICAL PROPERTIES OF TISSUE EQUIVALENT BOLUS FOR MICROWAVE HYPERTHERMIA
Authors not listed
Researchers developed liquid and gel-like tissue-equivalent bolus materials for microwave hyperthermia and derived empirical equations for their electrical properties across 1-10 GHz and 25-45°C.
Plain English Summary
Liquid bolus made from saline and ethanol and gel-like bolus made from saline, polyethylene, and TX150 were developed for clinical microwave hyperthermia. Electrical properties of these materials were measured at frequencies from 1 to 10 GHz and temperatures from 25 to 45°C using short-circuited waveguides and a short monopole impedance sensor. The measurement system was validated against published data with better than 4% agreement.
Why This Matters
A wide-band dielectrometry system based on the Antenna Modeling Theorem was developed to measure impedance of a short monopole in dielectric materials. Preliminary data indicated the dielectric constant follows a single-relaxation Debye Model with temperature-dependent relaxation time for both bolus types. Conductivity was found to be a sum of contributions from water relaxation, salinity, and ethanol relaxation.
Show BibTeX
@article{electrical_properties_of_tissue_equivalent_bolus_for_microwave_hyperthermia_g5445,
author = {Unknown},
title = {ELECTRICAL PROPERTIES OF TISSUE EQUIVALENT BOLUS FOR MICROWAVE HYPERTHERMIA},
year = {n.d.},
}