Synthesized tissue-equivalent dielectric phantoms using salt and polyvinylpyrrolidone solutions.

ABSTRACT:

Purpose

To explore the use of polyvinylpyrrolidone (PVP) for simulated materials with tissue-equivalent dielectric properties.

Methods

PVP and salt were used to control, respectively, relative permittivity and electrical conductivity in a collection of 63 samples with a range of solute concentrations. Their dielectric properties were measured with a commercial probe and fitted to a 3D polynomial in order to establish an empirical recipe. The material's thermal properties and MR spectra were measured.

Results

The empirical polynomial recipe (available at https://www.amri.ninds.nih.gov/cgi-bin/phantomrecipe) provides the PVP and salt concentrations required for dielectric materials with permittivity and electrical conductivity values between approximately 45 and 78, and

SUBMITTER: Ianniello C 

PROVIDER: S-EPMC5876111 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature