JP5276023B2 - 高磁場磁気共鳴適用のための正弦的に共鳴する無線周波ボリューム・コイル - Google Patents
高磁場磁気共鳴適用のための正弦的に共鳴する無線周波ボリューム・コイル Download PDFInfo
- Publication number
- JP5276023B2 JP5276023B2 JP2009550345A JP2009550345A JP5276023B2 JP 5276023 B2 JP5276023 B2 JP 5276023B2 JP 2009550345 A JP2009550345 A JP 2009550345A JP 2009550345 A JP2009550345 A JP 2009550345A JP 5276023 B2 JP5276023 B2 JP 5276023B2
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- Prior art keywords
- magnetic resonance
- radio frequency
- coil
- annular
- coil assembly
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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
- G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
-
- 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
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3628—Tuning/matching of the transmit/receive coil
- G01R33/3635—Multi-frequency operation
-
- 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
- G01R33/42—Screening
- G01R33/422—Screening of the radio frequency field
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
Claims (10)
- ある磁気共鳴周波数で正弦波状の電流分布をサポートするよう構成された環状導体と;
前記環状導体を少なくとも一つの方向においてシールドする無線周波シールドとを有する無線周波コイル組立体であって:
前記無線周波シールドが前記環状導体の周を取り囲む円筒型シールド部分を含み、
当該無線周波コイル組立体がさらに:
前記環状導体の平面に略垂直に配置された複数の棒導体を含み、前記棒導体は端部が前記円筒型シールド部分と電気的に接続されてTEMコイルを画定しており、前記棒導体は前記環状導体とは電気的に接続されておらず、
前記環状導体が、それぞれ第一および第二の磁気共鳴周波数で正弦波状の電流分布をサポートするよう構成された二つの平行な環状導体を含み、前記円筒型シールド部分は前記TEMコイルの棒導体および両環状導体の周を取り囲む、
無線周波コイル組立体。 - 前記環状導体が、静磁場に対して実質的に垂直に配向された円形の幾何形状をもつ、請求項1記載の無線周波コイル。
- 前記環状導体が、(i)連続的な伝導性ループである、または、(ii)リアクタンス性同調ギャップでセグメント分割されている、の一方である、請求項1または2記載の無線周波コイル組立体。
- 前記無線周波シールドがさらに、前記円筒型シールド部分の一端と電気的に接続され、該一端から内側に延び、前記環状導体と平行に配置されている平面状環状フランジ・シールド部分をさらに含む、請求項1記載の無線周波コイル組立体。
- 前記無線周波シールドがさらに、前記円筒型シールド部分の一端と電気的に接続され、該一端を封鎖し、前記環状導体と平行に配置されている平面状ディスク部分を含む、請求項1記載の無線周波コイル組立体。
- 前記第一および第二の磁気共鳴周波数が同じであり、前記TEMコイルが、前記第一および第二の磁気共鳴周波数とは異なる第三の磁気共鳴周波数で共鳴するよう構成されている、請求項1記載の無線周波コイル組立体。
- 前記TEMコイルが、いずれも前記第一および第二の磁気共鳴周波数とは異なる、第三および第四の異なる磁気共鳴周波数で共鳴するよう構成されている、請求項1記載の無線周波コイル組立体。
- 前記第一および第二の磁気共鳴周波数が異なる磁気共鳴周波数であり、前記TEMコイルが前記第一および第二の磁気共鳴周波数とは異なる第三の磁気共鳴周波数で共鳴するよう構成されている、請求項1記載の無線周波コイル組立体。
- 前記第一および第二の磁気共鳴周波数が異なる磁気共鳴周波数であり、前記TEMコイルが、いずれも前記第一および第二の磁気共鳴周波数とは異なる、第三および第四の異なる磁気共鳴周波数で共鳴するよう構成されている、請求項1記載の無線周波コイル組立体。
- 検査領域を通じた静磁場を生成する磁石と;
前記静磁場に選択された磁場勾配を重畳するよう構成された傾斜磁場システムと;
請求項1ないし9のうちいずれか一項記載の無線周波コイル組立体とを有する、
磁気共鳴スキャナ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US89153807P | 2007-02-26 | 2007-02-26 | |
US60/891,538 | 2007-02-26 | ||
PCT/IB2008/050324 WO2008104894A2 (en) | 2007-02-26 | 2008-01-30 | Sinusoidally resonant radio frequency volume coils for high field magnetic resonance applications |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010518935A JP2010518935A (ja) | 2010-06-03 |
JP5276023B2 true JP5276023B2 (ja) | 2013-08-28 |
Family
ID=39512532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009550345A Expired - Fee Related JP5276023B2 (ja) | 2007-02-26 | 2008-01-30 | 高磁場磁気共鳴適用のための正弦的に共鳴する無線周波ボリューム・コイル |
Country Status (5)
Country | Link |
---|---|
US (1) | US8421462B2 (ja) |
EP (2) | EP2115484A2 (ja) |
JP (1) | JP5276023B2 (ja) |
CN (1) | CN101622549B (ja) |
WO (1) | WO2008104894A2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101822392B1 (ko) | 2016-12-01 | 2018-01-29 | 가천대학교 산학협력단 | 동시 자기공명영상 획득이 가능한 자기공명영상 시스템 |
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CA2645229A1 (en) * | 2006-03-09 | 2007-09-13 | Insight Neuroimaging Systems, Llc | Microstrip coil designs for mri devices |
WO2009074966A1 (en) * | 2007-12-13 | 2009-06-18 | Koninklijke Philips Electronics N.V. | Dual tuned volume coils adapted to provide an end ring mode |
JP5247214B2 (ja) * | 2008-04-04 | 2013-07-24 | 株式会社日立製作所 | 高周波磁場コイル及び磁気共鳴撮影装置 |
US8143893B2 (en) * | 2009-03-31 | 2012-03-27 | General Electric Company | Thin extended-cavity RF coil for MRI |
US9689939B2 (en) * | 2012-10-10 | 2017-06-27 | University Of Georgia Research Foundation, Inc. | Split birdcage coil, devices, and methods |
US9952297B2 (en) * | 2014-05-08 | 2018-04-24 | Auburn University | Parallel plate transmission line for broadband nuclear magnetic resonance imaging |
KR102237827B1 (ko) * | 2014-09-01 | 2021-04-08 | 삼성전자주식회사 | 유전 구조체를 포함하는 rf 코일부 및 이를 포함하는 자기공명영상 시스템 |
WO2016081844A1 (en) * | 2014-11-20 | 2016-05-26 | The Medical College Of Wisconsin, Inc. | High q-factor magnetic resonance imaging radio frequency coil device and methods |
EP3274732B1 (en) | 2015-03-27 | 2021-09-29 | Koninklijke Philips N.V. | Magnetic resonance volume coil with multiple independent transmit receive channels and method of operation thereof |
FR3049714B1 (fr) * | 2016-03-29 | 2019-09-13 | Universite D'aix-Marseille | Procede de controle de la repartition du champ magnetique radiofrequence dans un systeme d’imagerie par resonance magnetique |
CN110312942B (zh) * | 2016-12-22 | 2022-09-06 | 皇家飞利浦有限公司 | 用于不同mri模式的rf线圈设备和rf屏蔽设备 |
CN107621615B (zh) * | 2017-09-28 | 2023-09-15 | 平康(深圳)医疗设备科技有限公司 | 嵌入式梯度及射频集成线圈及带有该集成线圈的磁共振设备 |
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CN109696642A (zh) * | 2018-12-29 | 2019-04-30 | 佛山瑞加图医疗科技有限公司 | 射频线圈装置及磁共振成像系统 |
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2008
- 2008-01-30 EP EP08709918A patent/EP2115484A2/en not_active Ceased
- 2008-01-30 EP EP13163255.6A patent/EP2618170A1/en not_active Ceased
- 2008-01-30 JP JP2009550345A patent/JP5276023B2/ja not_active Expired - Fee Related
- 2008-01-30 WO PCT/IB2008/050324 patent/WO2008104894A2/en active Application Filing
- 2008-01-30 US US12/528,536 patent/US8421462B2/en not_active Expired - Fee Related
- 2008-01-30 CN CN2008800060895A patent/CN101622549B/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101822392B1 (ko) | 2016-12-01 | 2018-01-29 | 가천대학교 산학협력단 | 동시 자기공명영상 획득이 가능한 자기공명영상 시스템 |
Also Published As
Publication number | Publication date |
---|---|
EP2618170A1 (en) | 2013-07-24 |
CN101622549B (zh) | 2013-07-31 |
EP2115484A2 (en) | 2009-11-11 |
US20100117642A1 (en) | 2010-05-13 |
CN101622549A (zh) | 2010-01-06 |
US8421462B2 (en) | 2013-04-16 |
WO2008104894A3 (en) | 2009-01-08 |
WO2008104894A2 (en) | 2008-09-04 |
JP2010518935A (ja) | 2010-06-03 |
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