JP5361311B2 - 高周波送信装置、高周波送信アンテナ装置、磁気共鳴システムおよび磁気共鳴画像を生成する方法 - Google Patents
高周波送信装置、高周波送信アンテナ装置、磁気共鳴システムおよび磁気共鳴画像を生成する方法 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
- G01R33/28—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
- G01R33/3664—Switching for purposes other than coil coupling or decoupling, e.g. switching between a phased array mode and a quadrature mode, switching between surface coil modes of different geometrical shapes, switching from a whole body reception coil to a local reception coil or switching for automatic coil selection in moving table MR or for changing the field-of-view
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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
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3642—Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification
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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
- G01R33/483—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy
- G01R33/4833—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices
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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
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
- G01R33/56366—Perfusion imaging
Description
Talagala S.L.、Ye F.Q.、Ledden P.J.およびChesnick S.の記事「Whole-brain 3D perfusion MRI at 3.0 T using CASL with a separate labeling coil」Magn Reson Med 2004:52 (1):131-140
Claims (12)
- 検査対象(P)の検査領域の磁気共鳴画像を生成するための磁気共鳴システム(1)用の高周波送信装置(20,20’、20’’)であって、
前記検査領域に高周波信号を送出する第1の高周波送信アンテナ(21)と、
所定の高周波送信出力を有する高周波信号を前記第1の高周波送信アンテナ(21)に供給する高周波増幅器(41)と、
マーキング高周波信号を送出することにより、1つおよび/または複数の前記検査領域内を流れる媒体を、該媒体が生成された前記検査領域の磁気共鳴画像において同定されるようにマーキングする第2の高周波送信アンテナ(22)とを備えた、高周波送信装置(20,20’、20’’)において、
前記第2の高周波送信アンテナ(22)は誘導コイル(26)と接続されており、該誘導コイル(26)は高周波増幅器(41)から前記第1の高周波送信アンテナ(21)を介して送出された高周波信号(HFS)を受信し、前記第2の高周波送信アンテナ(22)に転送し、該第2の高周波送信アンテナ(22)は相応のマーキング高周波信号を送出することを特徴とする、高周波送信装置。 - 前記第2の高周波送信アンテナ(22)はアクティブ化スイッチ(29)を介して前記誘導コイル(26)と接続されており、該アクティブ化スイッチ(29)は前記誘導コイル(26)によって受信された前記高周波信号(HFS)をアクティブスイッチング状態においては前記第2の高周波送信アンテナ(22)に転送し、デアクティブスイッチング状態においては前記第2の高周波送信アンテナ(22)に転送しない、請求項1記載の高周波送信装置。
- 前記誘導コイル(26)によって受信された高周波信号(HFS)の1つまたは複数の所定の特徴を検出し、所定の特徴または所定の特徴組み合わせを検出した場合には前記アクティブ化スイッチ(29)を所定のスイッチング状態に切り替える検出装置(33)が設けられている、請求項2記載の高周波送信装置。
- 前記1つまたは複数の所定の特徴として、前記高周波信号(HFS)の包絡線の最大振幅または立ち上がり特性を検出する、請求項3記載の高周波送信装置。
- 高周波送信アンテナ(22)を有する高周波送信アンテナ装置(28)において、
前記高周波送信アンテナ(22)と接続されている誘導コイル(26)が設けられており、該誘導コイル(26)は、高周波増幅器(41)から、前記高周波送信アンテナ装置(28)に依存しない別の高周波送信アンテナ(21)を介して送出された高周波信号(HFS)を受信し、該高周波信号(HFS)を前記高周波送信アンテナ装置(28)の前記高周波送信アンテナ(22)に転送し、該高周波送信アンテナ(22)は相応の高周波信号を送出することを特徴とする、高周波送信アンテナ装置(28)。 - 前記高周波送信アンテナ(22)はアクティブ化スイッチ(29)を介して前記誘導コイル(26)と接続されており、該アクティブ化スイッチ(29)は前記誘導コイル(26)によって受信された前記高周波信号(HFS)をアクティブスイッチング状態においては前記高周波送信アンテナ(22)に転送し、デアクティブスイッチング状態においては前記高周波送信アンテナ(22)に転送しない、請求項5記載の高周波送信アンテナ装置。
- 前記誘導コイル(26)によって受信された高周波信号(HFS)の1つまたは複数の所定の特徴を検出し、所定の特徴または所定の特徴組み合わせを検出した場合には前記アクティブ化スイッチ(29)を所定のスイッチング状態に切り替える検出装置(33)が設けられている、請求項6記載の高周波送信アンテナ装置。
- 前記1つまたは複数の所定の特徴として、前記高周波信号(HFS)の包絡線の最大振幅または立ち上がり特性が検出される、請求項7記載の高周波送信アンテナ装置。
- 請求項1から4までのいずれか1項記載の高周波送信装置(20,20’,20’’)により、検査対象(P)の検査領域の磁気共鳴画像を生成することを特徴とする、磁気共鳴システム(1)。
- 検査対象(P)の検査領域の磁気共鳴画像を生成する方法であって、
磁気共鳴システム(1)において第1の高周波送信アンテナ(21)により高周波信号を前記検査領域に送出し、該検査領域から放射された磁気共鳴信号を受信し、該磁気共鳴信号に基づいて前記検査領域の画像データ(BD)を生成し、
1つおよび/または複数の前記検査領域内を流れる媒体を、第2の高周波送信アンテナ(22)を介して送出されたマーキング高周波信号により、前記検査領域内の生成された磁気共鳴画像における前記媒体を同定できるようにマーキングする、磁気共鳴画像を生成する方法において、
誘導コイル(26)を用いて、高周波増幅器(41)から前記第1の高周波送信アンテナ(21)を介して送出された高周波信号(HFS)を受信し、前記第2の高周波送信アンテナ(22)に転送し、該第2の高周波送信アンテナ(22)は相応のマーキング高周波信号を送出することを特徴とする、磁気共鳴画像を生成する方法。 - 前記誘導コイル(26)によって受信された前記高周波信号(HFS)の1つまたは複数の所定の特徴を検出し、該特徴に依存して前記第2の高周波送信アンテナ(22)をアクティブ化またはデアクティブ化する、請求項10記載の方法。
- 前記1つまたは複数の所定の特徴として、前記高周波信号(HFS)の包絡線の最大振幅または立ち上がり特性を検出する、請求項11記載の方法。
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DE200710057495 DE102007057495B4 (de) | 2007-11-29 | 2007-11-29 | Hochfrequenz-Sendeeinrichtung, Hochfrequenz-Sendeantennenanordnung, Magnetresonanzsystem und Verfahren zur Erzeugung von Magnetresonanzaufnahmen |
DE102007057495.0 | 2007-11-29 |
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US8544397B2 (en) | 2010-09-15 | 2013-10-01 | Dawn Equipment Company | Row unit for agricultural implement |
US9232687B2 (en) | 2010-09-15 | 2016-01-12 | Dawn Equipment Company | Agricultural systems |
US9271437B2 (en) | 2011-07-01 | 2016-03-01 | Charles H. Martin | Agricultural field preparation device |
CN103222867B (zh) * | 2012-01-31 | 2016-12-07 | Ge医疗系统环球技术有限公司 | 体部/头部线圈切换方法、功率放大器组件和mri系统 |
US9215839B2 (en) | 2013-02-01 | 2015-12-22 | Dawn Equipment Company | Agricultural apparatus with hybrid single-disk, double-disk coulter arrangement |
US10175322B2 (en) * | 2014-01-28 | 2019-01-08 | Koninklijke Philips N.V. | Zero echo time MR imaging with sampling of K-space center |
US9668398B2 (en) | 2014-02-05 | 2017-06-06 | Dawn Equipment Company | Agricultural system for field preparation |
US10721855B2 (en) | 2014-02-05 | 2020-07-28 | Dawn Equipment Company | Agricultural system for field preparation |
US9241438B2 (en) * | 2014-02-05 | 2016-01-26 | Dawn Equipment Company | Agricultural system for field preparation |
US9615497B2 (en) | 2014-02-21 | 2017-04-11 | Dawn Equipment Company | Modular autonomous farm vehicle |
DE102014209783B4 (de) | 2014-05-22 | 2018-06-14 | Siemens Healthcare Gmbh | Erstellung eines MR-Bildes mit Hilfe einer Kombination aus einer Ganzkörperspule und einer lokalen Sendespule |
US9723778B2 (en) | 2014-11-07 | 2017-08-08 | Dawn Equipment Company | Agricultural system |
US10582653B2 (en) | 2014-11-07 | 2020-03-10 | Dawn Equipment Company | Agricultural planting system with automatic depth control |
US11197411B2 (en) | 2014-11-07 | 2021-12-14 | Dawn Equipment Company | Agricultural planting system with automatic depth control |
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US9848522B2 (en) | 2014-11-07 | 2017-12-26 | Dawn Equipment Company | Agricultural system |
US10980174B2 (en) | 2015-12-28 | 2021-04-20 | Underground Agriculture, LLC | Agricultural mowing device |
US10477760B2 (en) | 2015-12-28 | 2019-11-19 | Underground Agriculture, LLC | Agricultural organic device for weed control |
US11083134B2 (en) | 2015-12-28 | 2021-08-10 | Underground Agriculture, LLC | Agricultural inter-row mowing device |
US10645865B2 (en) | 2017-05-04 | 2020-05-12 | Dawn Equipment Company | Agricultural row unit with automatic control system for furrow closing device |
US10548260B2 (en) | 2017-05-04 | 2020-02-04 | Dawn Equipment Company | System for automatically setting the set point of a planter automatic down pressure control system with a seed furrow sidewall compaction measurement device |
US11006563B2 (en) | 2017-05-04 | 2021-05-18 | Dawn Equipment Company | Seed firming device for improving seed to soil contact in a planter furrow with feature designed to prevent the buildup of soil on the outer surfaces by discharging pressurized fluid |
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