Abstract #4816
Characterization of a Dielectric Phantom for High-Field MRI Applications
Qi Duan 1 , Jeff H. Duyn 1 , Natalia Gudino 1 , Jacco A. de Zwart 1 , Peter van Gelderen 1 , Daniel K. Sodickson 2,3 , and Ryan Brown 2,3
1
AMRI, LFMI, National Institute of
Neurological Disorders and Stroke, National Institutes
of Health, Bethesda, Maryland, United States,
2
The
Bernard and Irene Schwartz Center for Biomedical
Imaging, Department of Radiology, New York University
School of Medicine, New York, United States,
3
NYU
WIRELESS, Polytechnic Institute of New York University,
New York, United States
In order to predict wavelength effects on MRI
performance and tissue heating at high field, a generic
recipe for an inexpensive and nontoxic phantom with
biologically-relevant dielectric properties was
developed. The recipe includes deionized water, NaCl,
sucrose, and benzoic acid. 117 samples were prepared
with a range of NaCl and sucrose concentrations, and
their dielectric properties were measured and fitted to
a three-dimensional polynomial. Nonlinear relationships
between sucrose and NaCl concentrations and measured
dielectric properties were observed, and strong
interactions were found between individual component
concentrations in determining dielectric properties.
This abstract and the presentation materials are available to members only;
a login is required.
Join Here
