JP2005118567A - Mrスキャナのrfコイルのアレイによる同時mrデータ収集の撮影領域を損なうことなく信号対雑音比を改善する方法及び装置 - Google Patents
Mrスキャナのrfコイルのアレイによる同時mrデータ収集の撮影領域を損なうことなく信号対雑音比を改善する方法及び装置 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
- G01R33/3415—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with flexible receiver channels
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Abstract
【解決手段】 RFコイルからのMR信号をアナログ結合して複数セット(76、78)のアナログ結合されたMR信号を形成し、次いで該アナログ結合されたMR信号セット(76、78)をデジタル結合して画像再構成用のデジタル化された信号セット(80)を提供するための方法及び装置が開示される。収集したMR信号のアナログ結合に続くデジタル結合により、同時MRデータ収集においてFOVを損なうことなく、撮影領域(FOV)からのデータ収集に用いられるRFコイルの固有SNRを改善する。
【選択図】 図6
Description
72 信号処理ユニット
74 最終画像
Claims (10)
- MR信号受信器組立体であって、
NセットのMR信号を収集するように構成されたN個の受信素子と、
前記NセットのMR信号をアナログ結合してM<NであるMセット(76、78)のMR信号とするように構成されたN個より少ないアナログ結合器と、
前記Mセット(76、78)のMR信号をデジタル結合して画像再構成用の少なくとも1セット(80)のデジタル結合されたMR信号とするように構成されたN個より少ないデジタル結合器と、
を備える組立体。 - 前記N個より少ないアナログ結合器は、M=N/2であるN/2個のアナログ結合器を含む請求項1に記載の組立体。
- 前記N個より少ないデジタル結合器は、前記Mセット(76、78)のMR信号を結合して1セット(80)のMR信号とするように構成されたN/2個のデジタル結合器を含む請求項2に記載の組立体。
- 前記Mセット(76、78)のMR信号は、非隣接受信コイル素子から収集されたMR信号を含む請求項2に記載の組立体。
- 前記Mセット(76、78)のMR信号は、互いに空間的に相補関係にある請求項4に記載の組立体。
- 前記N個の受信素子は、RFエネルギを検出することができるN個の受信コイルを含む請求項1に記載の組立体。
- 前記N個の受信素子は、N個の表面コイルを含む請求項1に記載の組立体。
- 各アナログ結合器は更に、非隣接受信素子からのMR信号を結合するように構成されている請求項1に記載の組立体。
- MRイメージング装置内に組み込まれている請求項1に記載の組立体。
- 前記N個の受信素子は、受信コイルのフェーズドアレイ(70)内に組み込まれている請求項1に記載の組立体。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51247603P | 2003-10-17 | 2003-10-17 | |
US10/756,592 US7109710B2 (en) | 2003-10-17 | 2004-01-13 | Method and apparatus to improve signal-to-noise ratio without compromising field-of-view for simultaneous MR data acquisition by an array of RF coils of an MR scanner |
Publications (1)
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JP2005118567A true JP2005118567A (ja) | 2005-05-12 |
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JP2004300864A Pending JP2005118567A (ja) | 2003-10-17 | 2004-10-15 | Mrスキャナのrfコイルのアレイによる同時mrデータ収集の撮影領域を損なうことなく信号対雑音比を改善する方法及び装置 |
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US (1) | US7109710B2 (ja) |
JP (1) | JP2005118567A (ja) |
DE (1) | DE102004050271A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100348152C (zh) * | 2005-11-29 | 2007-11-14 | 东南大学 | 基于独立成份空间相关性消除功能磁共振数据噪声的方法 |
JP2011036452A (ja) * | 2009-08-12 | 2011-02-24 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7279893B1 (en) * | 2006-04-20 | 2007-10-09 | General Electric Company | Receiver channel data combining in parallel mr imaging |
US8067940B2 (en) * | 2009-05-07 | 2011-11-29 | Siemens Aktiengesellschaft | Tubular magnetic resonance surface coil, and method and system for processing signals therefrom |
MX2014002574A (es) * | 2011-09-07 | 2014-06-05 | Koninkl Philips Nv | Divisor/combinador de modos para minimizacion del factor de ruido y control de energia en conjuntos de bobinas de radiofrecuencia. |
US9739854B2 (en) * | 2012-03-21 | 2017-08-22 | Hitachi, Ltd. | Magnetic resonance imaging apparatus and output pattern determining method |
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JPH01207044A (ja) * | 1988-02-15 | 1989-08-21 | Yokogawa Medical Syst Ltd | 核磁気共鳴画像診断装置の受信装置 |
JPH05207988A (ja) * | 1992-01-31 | 1993-08-20 | Shimadzu Corp | Mri装置の信号検出装置 |
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US4825162A (en) | 1987-12-07 | 1989-04-25 | General Electric Company | Nuclear magnetic resonance (NMR) imaging with multiple surface coils |
NL9001298A (nl) * | 1990-06-08 | 1992-01-02 | Philips Nv | Rf spoelenstelsel in magnetisch resonantie apparaat. |
US5221900A (en) * | 1991-04-30 | 1993-06-22 | Hewlett-Packard Company | Magnet structure for focusing of magnetic resonance images |
US5179332A (en) * | 1991-08-16 | 1993-01-12 | General Electric Company | NMR radio frequency coil with disable circuit |
US5457386A (en) * | 1991-11-26 | 1995-10-10 | Hitachi, Ltd. | Multiple-coil adopting a quadrature detection method applied thereto and a signal processing circuit employing the same in an MRI apparatus in a vertical magnetic system |
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US5374890A (en) * | 1992-07-24 | 1994-12-20 | Picker International, Inc. | Simultaneous magnetic resonance imaging of multiple human organs |
US5548218A (en) * | 1995-10-19 | 1996-08-20 | North Shore University Hospital Research Corporation | Flexible RF coils for MRI system |
JP3562902B2 (ja) * | 1996-04-26 | 2004-09-08 | 株式会社日立メディコ | 磁気共鳴イメージング装置用rfプローブ |
US5910728A (en) * | 1996-11-12 | 1999-06-08 | Beth Israel Deaconess Medical Center | Simultaneous acquisition of spatial harmonics (SMASH): ultra-fast imaging with radiofrequency coil arrays |
US20010045832A1 (en) * | 1997-11-26 | 2001-11-29 | Kenneth W. Belt | Peripheral vascular array |
US6396266B1 (en) | 1998-11-25 | 2002-05-28 | General Electric Company | MR imaging system with interactive MR geometry prescription control |
DE19904537C1 (de) | 1999-02-04 | 2000-09-07 | Siemens Ag | Verfahren zum Betrieb eines diagnostischen Magnetresonanzgerätes |
US6493572B1 (en) * | 1999-09-30 | 2002-12-10 | Toshiba America Mri, Inc. | Inherently de-coupled sandwiched solenoidal array coil |
JP4080883B2 (ja) * | 2001-02-09 | 2008-04-23 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 磁気共鳴イメージング装置 |
DE10148445A1 (de) * | 2001-10-01 | 2003-04-30 | Siemens Ag | Signalauswerteverfahren für Magnetresonanz-Empfangssignale und hiermit korrespondierende Empfangsanordnung |
US6798202B2 (en) * | 2001-11-23 | 2004-09-28 | Koninklijke Philips Electronics N.V. | Planar radio frequency coil for open magnetic resonance imaging systems |
US6597173B1 (en) | 2002-07-10 | 2003-07-22 | Ge Medical Systems Global Technology Co., Llc | Method and apparatus for reconstructing zoom MR images |
US6914432B2 (en) * | 2003-06-23 | 2005-07-05 | General Electric Company | Phased array coil assembly and method and system for employing the same |
-
2004
- 2004-01-13 US US10/756,592 patent/US7109710B2/en not_active Expired - Lifetime
- 2004-10-14 DE DE102004050271A patent/DE102004050271A1/de not_active Withdrawn
- 2004-10-15 JP JP2004300864A patent/JP2005118567A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH01207044A (ja) * | 1988-02-15 | 1989-08-21 | Yokogawa Medical Syst Ltd | 核磁気共鳴画像診断装置の受信装置 |
JPH05207988A (ja) * | 1992-01-31 | 1993-08-20 | Shimadzu Corp | Mri装置の信号検出装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100348152C (zh) * | 2005-11-29 | 2007-11-14 | 东南大学 | 基于独立成份空间相关性消除功能磁共振数据噪声的方法 |
JP2011036452A (ja) * | 2009-08-12 | 2011-02-24 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
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US20050083055A1 (en) | 2005-04-21 |
DE102004050271A1 (de) | 2005-07-07 |
US7109710B2 (en) | 2006-09-19 |
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