RF Surface Receive Array Coils: The Art of an LC Circuit
The radiofrequency (RF) receive array coil is a complicated device with many inductors and capacitors and serves as one of the most critical magnetic resonance imaging (MRI) electronic devices. It directly determines the achievable level of signal‐to‐noise ratio (SNR). Simply put, however, the RF co...
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| Veröffentlicht in: | Journal of magnetic resonance imaging 2013-07, Vol.38 (1), p.12-25 |
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| container_title | Journal of magnetic resonance imaging |
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| creator | Fujita, Hiroyuki Zheng, Tsinghua Yang, Xiaoyu Finnerty, Matthew J. Handa, Shinya |
| description | The radiofrequency (RF) receive array coil is a complicated device with many inductors and capacitors and serves as one of the most critical magnetic resonance imaging (MRI) electronic devices. It directly determines the achievable level of signal‐to‐noise ratio (SNR). Simply put, however, the RF coil is nothing but an LC circuit. The receive array coil was first proposed more than 20 years ago, evolving from a simple arrangement with a few electronic channels to a complicated system of 128 channels, enabling highly sophisticated parallel imaging, at different field strengths. This article summarizes the basic concepts pertaining to RF receive coil arrays and their associated SNR and reviews the theories behind the major components of such arrays. This includes discussions of the intrinsic SNR of a receive coil, the matching circuits, low‐noise preamplifiers, coupling/decoupling amongst coils, the coupling between receive and transmit coils, decoupling via preamplifiers, and baluns. An 8‐channel receive array coil on a cylindrical former serves as a useful example for demonstrating various points in the review. J. Magn. Reson. Imaging 2013;38:12–25. © 2013 Wiley Periodicals, Inc. |
| doi_str_mv | 10.1002/jmri.24159 |
| format | Article |
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Magn. Reson. Imaging</addtitle><description>The radiofrequency (RF) receive array coil is a complicated device with many inductors and capacitors and serves as one of the most critical magnetic resonance imaging (MRI) electronic devices. It directly determines the achievable level of signal‐to‐noise ratio (SNR). Simply put, however, the RF coil is nothing but an LC circuit. The receive array coil was first proposed more than 20 years ago, evolving from a simple arrangement with a few electronic channels to a complicated system of 128 channels, enabling highly sophisticated parallel imaging, at different field strengths. This article summarizes the basic concepts pertaining to RF receive coil arrays and their associated SNR and reviews the theories behind the major components of such arrays. This includes discussions of the intrinsic SNR of a receive coil, the matching circuits, low‐noise preamplifiers, coupling/decoupling amongst coils, the coupling between receive and transmit coils, decoupling via preamplifiers, and baluns. An 8‐channel receive array coil on a cylindrical former serves as a useful example for demonstrating various points in the review. J. Magn. Reson. Imaging 2013;38:12–25. © 2013 Wiley Periodicals, Inc.</description><subject>Amplifiers, Electronic</subject><subject>balun</subject><subject>Computer-Aided Design</subject><subject>decoupling</subject><subject>Electronics - instrumentation</subject><subject>Equipment Design</subject><subject>Equipment Failure Analysis</subject><subject>Image Enhancement - instrumentation</subject><subject>Magnetic resonance imaging</subject><subject>Magnetic Resonance Imaging - instrumentation</subject><subject>Magnetics - instrumentation</subject><subject>Models, Theoretical</subject><subject>preamplifier</subject><subject>Radio Waves</subject><subject>RF array coil</subject><subject>RF coil</subject><subject>Transducers</subject><issn>1053-1807</issn><issn>1522-2586</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpdkE9PwkAQxTdGI4he_ABmEy9eivuv3V1vpBGEoCaA8bjZliEuForbVuXb24Jy8DLzMvN7k8lD6JKSLiWE3S5X3nWZoKE-Qm0aMhawUEXHtSYhD6gisoXOimJJCNFahKeoxXgktNCyjdSkj6eVX9gU8ARScJ-Ae97bLY5zlxV3ePbWDEqcL7Bd43GMY-fTypXn6GRhswIufnsHvfTvZ_FDMH4eDOPeOEi5jnSQKE5SruYSOCVWplwQSxKhOCgASxNlOYsSwbSYC6BaSlWX2spARSFJJO-gm_3djc8_KihKs3JFCllm15BXhaFca825EA16_Q9d5pVf19_tKE6FYg119UtVyQrmZuPdyvqt-cukBuge-HIZbA97SkyTtmnSNru0zehxMtyp2hPsPa4o4fvgsf7dRJLL0Lw-DUx_xKZkOmYm5j8N4Xxk</recordid><startdate>201307</startdate><enddate>201307</enddate><creator>Fujita, Hiroyuki</creator><creator>Zheng, Tsinghua</creator><creator>Yang, Xiaoyu</creator><creator>Finnerty, Matthew J.</creator><creator>Handa, Shinya</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7QO</scope><scope>7TK</scope><scope>8FD</scope><scope>FR3</scope><scope>K9.</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>201307</creationdate><title>RF Surface Receive Array Coils: The Art of an LC Circuit</title><author>Fujita, Hiroyuki ; Zheng, Tsinghua ; Yang, Xiaoyu ; Finnerty, Matthew J. ; Handa, Shinya</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3969-b830c38d7e310a7c340a0b483e8eea1b8a326b4294d4e19778197c392e8650b73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Amplifiers, Electronic</topic><topic>balun</topic><topic>Computer-Aided Design</topic><topic>decoupling</topic><topic>Electronics - instrumentation</topic><topic>Equipment Design</topic><topic>Equipment Failure Analysis</topic><topic>Image Enhancement - instrumentation</topic><topic>Magnetic resonance imaging</topic><topic>Magnetic Resonance Imaging - instrumentation</topic><topic>Magnetics - instrumentation</topic><topic>Models, Theoretical</topic><topic>preamplifier</topic><topic>Radio Waves</topic><topic>RF array coil</topic><topic>RF coil</topic><topic>Transducers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fujita, Hiroyuki</creatorcontrib><creatorcontrib>Zheng, Tsinghua</creatorcontrib><creatorcontrib>Yang, Xiaoyu</creatorcontrib><creatorcontrib>Finnerty, Matthew J.</creatorcontrib><creatorcontrib>Handa, Shinya</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>Biotechnology Research Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of magnetic resonance imaging</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fujita, Hiroyuki</au><au>Zheng, Tsinghua</au><au>Yang, Xiaoyu</au><au>Finnerty, Matthew J.</au><au>Handa, Shinya</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>RF Surface Receive Array Coils: The Art of an LC Circuit</atitle><jtitle>Journal of magnetic resonance imaging</jtitle><addtitle>J. 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| subjects | Amplifiers, Electronic balun Computer-Aided Design decoupling Electronics - instrumentation Equipment Design Equipment Failure Analysis Image Enhancement - instrumentation Magnetic resonance imaging Magnetic Resonance Imaging - instrumentation Magnetics - instrumentation Models, Theoretical preamplifier Radio Waves RF array coil RF coil Transducers |
| title | RF Surface Receive Array Coils: The Art of an LC Circuit |
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