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

Handwerker, J., Ortmanns, M., Anders, J., Eschelbach, M., Chang, P., Henning, A., et al. (2013). An active TX/RX NMR probe for real-time monitoring of MRI field imperfections. In IEEE Biomedical Circuits and Systems Conference (BioCAS 2013) (pp. 194-197). Piscataway, NJ, USA: IEEE.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-14A2-E Version Permalink: http://hdl.handle.net/21.11116/0000-0001-20EE-F
Genre: Conference Paper

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 Creators:
Handwerker, J, Author
Ortmanns, M, Author
Anders, J, Author
Eschelbach, Martin1, 2, Author              
Chang, Paul2, 3, Author              
Henning, Anke2, 3, Author              
Scheffler, K1, 2, Author              
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              
3Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528692              

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 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.

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 Dates: 2013-11
 Publication Status: Published in print
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 Identifiers: DOI: 10.1109/BioCAS.2013.6679672
BibTex Citekey: HandwerkerOAECHS2013
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Title: IEEE Biomedical Circuits and Systems Conference (BioCAS 2013)
Place of Event: Rotterdam, The Netherlands
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Title: IEEE Biomedical Circuits and Systems Conference (BioCAS 2013)
Source Genre: Proceedings
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Publ. Info: Piscataway, NJ, USA : IEEE
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 194 - 197 Identifier: ISBN: 978-1-479-91470-8