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Current CONtrolled Transmit And Receive Coil Elements (C(2)ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI

A novel intrinsically decoupled transmit and receive radio-frequency coil element is presented for applications in parallel imaging and parallel excitation techniques in high-field magnetic resonance imaging. Decoupling is achieved by a twofold strategy: during transmission elements are driven by cu...

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Autores principales: Kirilina, E., Kühne, A., Lindel, T., Hoffmann, W., Rhein, K. H., Riemer, T., Seifert, F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Vienna 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3215873/
https://www.ncbi.nlm.nih.gov/pubmed/22162914
http://dx.doi.org/10.1007/s00723-011-0248-y
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author Kirilina, E.
Kühne, A.
Lindel, T.
Hoffmann, W.
Rhein, K. H.
Riemer, T.
Seifert, F.
author_facet Kirilina, E.
Kühne, A.
Lindel, T.
Hoffmann, W.
Rhein, K. H.
Riemer, T.
Seifert, F.
author_sort Kirilina, E.
collection PubMed
description A novel intrinsically decoupled transmit and receive radio-frequency coil element is presented for applications in parallel imaging and parallel excitation techniques in high-field magnetic resonance imaging. Decoupling is achieved by a twofold strategy: during transmission elements are driven by current sources, while during signal reception resonant elements are switched to a high input impedance preamplifier. To avoid B (0) distortions by magnetic impurities or DC currents a resonant transmission line is used to relocate electronic components from the vicinity of the imaged object. The performance of a four-element array for 3 T magnetic resonance tomograph is analyzed by means of simulation, measurements of electromagnetic fields and bench experiments. The feasibility of parallel acquisition and parallel excitation is demonstrated and compared to that of a conventional power source-driven array of equivalent geometry. Due to their intrinsic decoupling the current-controlled elements are ideal basic building blocks for multi-element transmit and receive arrays of flexible geometry.
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spelling pubmed-32158732011-12-09 Current CONtrolled Transmit And Receive Coil Elements (C(2)ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI Kirilina, E. Kühne, A. Lindel, T. Hoffmann, W. Rhein, K. H. Riemer, T. Seifert, F. Appl Magn Reson Article A novel intrinsically decoupled transmit and receive radio-frequency coil element is presented for applications in parallel imaging and parallel excitation techniques in high-field magnetic resonance imaging. Decoupling is achieved by a twofold strategy: during transmission elements are driven by current sources, while during signal reception resonant elements are switched to a high input impedance preamplifier. To avoid B (0) distortions by magnetic impurities or DC currents a resonant transmission line is used to relocate electronic components from the vicinity of the imaged object. The performance of a four-element array for 3 T magnetic resonance tomograph is analyzed by means of simulation, measurements of electromagnetic fields and bench experiments. The feasibility of parallel acquisition and parallel excitation is demonstrated and compared to that of a conventional power source-driven array of equivalent geometry. Due to their intrinsic decoupling the current-controlled elements are ideal basic building blocks for multi-element transmit and receive arrays of flexible geometry. Springer Vienna 2011-08-21 2011 /pmc/articles/PMC3215873/ /pubmed/22162914 http://dx.doi.org/10.1007/s00723-011-0248-y Text en © The Author(s) 2011 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Article
Kirilina, E.
Kühne, A.
Lindel, T.
Hoffmann, W.
Rhein, K. H.
Riemer, T.
Seifert, F.
Current CONtrolled Transmit And Receive Coil Elements (C(2)ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI
title Current CONtrolled Transmit And Receive Coil Elements (C(2)ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI
title_full Current CONtrolled Transmit And Receive Coil Elements (C(2)ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI
title_fullStr Current CONtrolled Transmit And Receive Coil Elements (C(2)ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI
title_full_unstemmed Current CONtrolled Transmit And Receive Coil Elements (C(2)ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI
title_short Current CONtrolled Transmit And Receive Coil Elements (C(2)ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI
title_sort current controlled transmit and receive coil elements (c(2)ontar) for parallel acquisition and parallel excitation techniques at high-field mri
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3215873/
https://www.ncbi.nlm.nih.gov/pubmed/22162914
http://dx.doi.org/10.1007/s00723-011-0248-y
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