Dielectric enhanced dipoles for MRI - Approaching the ideal current pattern

Brink, Wyger M.; Paska, J.; Dai, J.; van Gemert, J.H.F.; chen, G.; Wiggins, G.C.; Remis, R.F.; Collins, C.M.; Webb, A.

Dielectric enhanced dipoles for MRI - Approaching the ideal current pattern

Conference paper (2017)

Authors

Wyger M. Brink Leiden University Medical Center

J. Paska New York University School of Medicine

J. Dai Leiden University Medical Center

J.H.F. van Gemert

G. chen New York University School of Medicine

G.C. Wiggins New York University School of Medicine

R.F. Remis Signal Processing Systems -

C.M. Collins New York University School of Medicine

A. Webb Leiden University Medical Center

Sensitivity Radio frequency Permittivity Dielectrics Inductors Signal to noise ratio

To reference this document use:

http://resolver.tudelft.nl/uuid:f7bcff3c-7339-43d2-a99e-3a9987500dbf

More Info

expand_more

Published Date

2017

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

In this work we present a systematic evaluation of the potential of combining dielectric materials with an array of electric dipoles for MRI. Design parameters include the permittivity and length of a dielectric sleeve, as well as the dipole length and position of the tuning inductors. Results show that the combined approach improves transmit efficiency and SNR by ~10 to 15 % compared to an optimized dipole array without dielectric sleeve. The resulting induced current densities reflect an improved correspondence with the ideal current pattern, which explains the gains in performance.

Files

08065489.pdf

(pdf | 0.474 Mb)

Unknown license

Download not available