Abstract #3143
MR imaging of the temporomandibular joint at 7.0 Tesla: a feasibility study using novel high permittivity dielectric pads
Andrei Manoliu 1,2 , Georg Spinner 2 , Michael Wyss 2 , Daniel Nanz 1 , Dominik Ettlin 3 , Luigi M Gallo 3 , and Gustav Andreisek 1
1
Department of Radiology, University Hospital
Zurich, Zurich, Switzerland,
2
Institute
for Biomedical Engineering, University and ETH Zurich,
Zurich, Switzerland,
3
Center
for Dental and Oral Medicine and Maxillofacial Surgery,
University of Zurich, Zurich, Switzerland
The current study evaluates the use of high-permittivity
dielectric pads for imaging the temporomandibular joint
(TMJ) at 7T. 12 healthy volunteers were examined at 7T
using a 32-channel head coil with and without dielectric
pads. For quantitative analysis, B1+ field maps and
signal-to-noise-ratio (SNR) maps were calculated. For
qualitative analysis, proton density weighted images
were assessed. The application of dielectric pads
increased local B1+ and SNR, which translated into
significantly increased visibility of the TMJ. The
presented results demonstrate the feasibility of
high-resolution MR-imaging of the TMJ at 7T for the
first time.
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