New ferroelectric ceramics for transmit efficiency enhancement at 1.5 Tesla

Irena Zivkovic, Alexey P. Slobozhanyuk, Elisaveta Nenasheva, Andrew Webb

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

The presence of medical implants often results in MR scans with low SAR being prescribed, which reduces the diagnostic quality of the images. This work shows that one can achieve an increase in local transmit efficiency and a corresponding decrease in SAR at 1.5 Tesla using new ferroelectric materials (based on BaTiO3 with ZrO2 and CeO2-additives) with relative permittivities higher than 4500. Simulations and phantom/in vivo experiments show an increased local transmit efficiency of ~50% from the body transmit coil, with a corresponding increase in SNR for a given value of SAR.
Original languageEnglish
Title of host publicationJoint Annual Meeting ISMRM-ESMRMB 2018
Place of PublicationParis, France
Publication statusPublished - 2018
Externally publishedYes
EventJoint Annual Meeting ISMRM-ESMRMB 2018 - Paris, France
Duration: 16 Jun 201821 Jun 2018

Conference

ConferenceJoint Annual Meeting ISMRM-ESMRMB 2018
CountryFrance
CityParis
Period16/06/1821/06/18

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