An active TX/RX NMR probe for real-time monitoring of MRI field imperfections

Jonas Handwerker, Maurits Ortmanns, Jens Anders, Martin Eschelbach, Paul Chang, Anke Henning, Klaus Scheffler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

In this paper, we present a PCB-based active miniaturized MR field probe for real-time monitoring of the magnetization's phase evolution during magnetic resonance (MR) experiments. The data obtained with the presented sensor can be used to correct gradient field imperfections which uncorrected result in significant distortions in the reconstructed MR images. The presented active field probe consists of a susceptibility matched solenoidal MR coil and a complete homodyne transceiver. Thanks to the local generation of the radio frequency signal required for the excitation of the spin ensemble and the downconversion of the recorded MR signal to low frequencies, the proposed architecture significantly reduces the crosstalk between the probe head and the MR imaging object compared to existing designs. MR measurements performed in an ultra high field 9.4 T full-body scanner prove the compatibility of the presented sensor with commercial MR imaging systems and demonstrate its excellent MR phase tracking performance.

Original languageEnglish (US)
Title of host publication2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
Pages194-197
Number of pages4
DOIs
StatePublished - Dec 1 2013
Externally publishedYes
Event2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013 - Rotterdam, Netherlands
Duration: Oct 31 2013Nov 2 2013

Publication series

Name2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013

Conference

Conference2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
CountryNetherlands
CityRotterdam
Period10/31/1311/2/13

ASJC Scopus subject areas

  • Hardware and Architecture
  • Biomedical Engineering
  • Electrical and Electronic Engineering

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