JP2022183151A - 無線周波数アレイの調整 - Google Patents
無線周波数アレイの調整 Download PDFInfo
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- JP2022183151A JP2022183151A JP2022146659A JP2022146659A JP2022183151A JP 2022183151 A JP2022183151 A JP 2022183151A JP 2022146659 A JP2022146659 A JP 2022146659A JP 2022146659 A JP2022146659 A JP 2022146659A JP 2022183151 A JP2022183151 A JP 2022183151A
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- 238000004458 analytical method Methods 0.000 claims abstract description 18
- 230000008878 coupling Effects 0.000 claims description 29
- 238000010168 coupling process Methods 0.000 claims description 29
- 238000005859 coupling reaction Methods 0.000 claims description 29
- 238000013528 artificial neural network Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 4
- 230000037303 wrinkles Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000003909 pattern recognition Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000003491 array Methods 0.000 description 8
- 230000003993 interaction Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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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
- G01R33/3628—Tuning/matching of the transmit/receive coil
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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
- G01R33/283—Intercom or optical viewing arrangements, structurally associated with NMR apparatus
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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
- G01R33/34084—Constructional details, e.g. resonators, specially adapted to MR implantable coils or coils being geometrically adaptable to the sample, e.g. flexible coils or coils comprising mutually movable parts
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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
-
- 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
- G01R33/365—Decoupling of multiple RF coils wherein the multiple RF coils have the same function in MR, e.g. decoupling of a receive coil from another receive coil in a receive coil array, decoupling of a transmission coil from another transmission coil in a transmission coil array
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Image Analysis (AREA)
Abstract
Description
を有する、本発明のRFシステムによって達成される。
Claims (9)
- 無線周波数システムであって、
アンテナ素子の無線周波数アレイと、
前記アンテナ素子のインピーダンスを同調させるための調整装置と、
前記無線周波数アレイの画像情報を取得するカメラシステムと、
分析モジュールであって、
前記画像情報から前記アンテナ素子のインピーダンスの動作設定を導出し、 前記分析モジュールは、前記画像情報から前記無線周波数アレイの実際の形状を計算するように構成され、
前記計算される無線周波数アレイの実際の幾何学的形状に依存して、前記アンテナ素子のインピーダンスの前記動作設定を導出する
分析モジュールと
を有する、無線周波数システム。 - 前記分析モジュールは、前記画像情報から、又は前記計算される無線周波数アレイの実際の幾何学的形状から、前記動作設定を導出するように訓練される、訓練されるニューラルネットワークを含む、請求項1に記載の無線周波数システム。
- 前記分析モジュールは、アンテナ素子の間の相互電磁カップリング、及び前記アンテナ素子と負荷との間の電磁カップリングに関する情報を受信するように構成され、
前記訓練されるニューラルネットワークは、相互電磁カップリング及び/又は負荷への電磁カップリングを補償するために前記無線周波数アレイの更なるデカップリング設定を導出するように訓練される、
請求項2記載の無線周波数システム。 - 前記カメラシステムは、深度検出カメラアセンブリを含む、請求項1乃至3の何れか一項に記載の無線周波数システム。
- コントラスト強調パターンが前記無線周波数アレイ上に配置される、請求項1乃至4の何れか一項に記載の無線周波数システム。
- 前記無線周波数アレイはフレキシブルアレイである、請求項1乃至5の何れか一項に記載の無線周波数システム。
- 前記分析モジュールは、前記無線周波数アレイの実際の形状における鋭い形状遷移(リンクル、尖)を認識するためのパターン認識機能を備える、前記請求項1乃至6の何れか一項に記載の無線周波数システム。
- 無線周波数アレイのアンテナ素子のインピーダンスの動作設定を、前記無線周波数アレイの画像情報又は計算される無線周波数アレイの実際の幾何学的形状に関連付けるようにニューラルネットワークを訓練する方法であって、
前記無線周波数アレイを複数のそれぞれの幾何学的形状に形成するステップと、
前記それぞれの設定される幾何学的形状の各々に対して、特にネットワークアナライザによって、前記アレイの散乱マトリックスを測定し、前記無線周波数アンテナ素子のインピーダンスを同調させて、最小の信号反射を達成するステップと
を含む方法。 - 前記複数のそれぞれの幾何学的形状は、臨床使用における妥当な変形に対応するように予め選択される、請求項8に記載のニューラルネットワークを訓練する方法。
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862779502P | 2018-12-14 | 2018-12-14 | |
US62/779,502 | 2018-12-14 | ||
EP18215865.9 | 2018-12-24 | ||
EP18215865.9A EP3674736A1 (en) | 2018-12-24 | 2018-12-24 | Adjusting of radiofrequency array using a camera system |
PCT/EP2019/084112 WO2020120347A1 (en) | 2018-12-14 | 2019-12-09 | Adjusting of radiofrequency array using a camera system |
JP2021531804A JP7197702B2 (ja) | 2018-12-14 | 2019-12-09 | 無線周波数アレイの調整 |
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JP2022183151A true JP2022183151A (ja) | 2022-12-08 |
JP7284861B2 JP7284861B2 (ja) | 2023-05-31 |
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JP2021531804A Active JP7197702B2 (ja) | 2018-12-14 | 2019-12-09 | 無線周波数アレイの調整 |
JP2022146659A Active JP7284861B2 (ja) | 2018-12-14 | 2022-09-15 | 無線周波数アレイの調整 |
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US (1) | US11519982B2 (ja) |
EP (2) | EP3674736A1 (ja) |
JP (2) | JP7197702B2 (ja) |
CN (1) | CN113242980A (ja) |
WO (1) | WO2020120347A1 (ja) |
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CN114415097B (zh) * | 2021-12-31 | 2023-06-30 | 江苏美时医疗技术有限公司 | 一种磁共振相控阵线圈性能快速检测装置及其检测方法 |
Citations (3)
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US20160135711A1 (en) * | 2013-06-26 | 2016-05-19 | Hitachi, Ltd. | Magnetic resonance imaging device and rf coil assembly |
US20160338614A1 (en) * | 2015-05-20 | 2016-11-24 | Siemens Healthcare Gmbh | Magnetic resonance apparatus and method for positioning an object on a patient positioning device within an isocenter of a magnetic resonance scanner |
JP2018502652A (ja) * | 2015-01-21 | 2018-02-01 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 多チャンネルrfコイルアセンブリの自動化されたインピーダンス調節 |
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WO2007100760A2 (en) * | 2006-02-27 | 2007-09-07 | The Penn State Research Foundation | Detecting quadrupole resonance signals using high temperature superconducting resonators |
DE102009012107B4 (de) * | 2009-03-06 | 2014-03-20 | Siemens Aktiengesellschaft | HF Stripline Antenne mit Impedanzanpassung für MR-Bildgebung |
WO2010110881A1 (en) * | 2009-03-27 | 2010-09-30 | Hetherington Hoby P | Improved transceiver apparatus, system, and methodology for superior in-vivo imaging of human anatomy |
CN103649767B (zh) * | 2011-07-04 | 2016-09-21 | 皇家飞利浦有限公司 | 具有多通道阻抗匹配网络的磁共振成像系统 |
EP2751585A1 (en) * | 2011-09-07 | 2014-07-09 | Koninklijke Philips N.V. | Dynamic modification of rf array coil/antenna impedance |
EP2618171A1 (en) * | 2012-01-17 | 2013-07-24 | Koninklijke Philips Electronics N.V. | Multi-resonant T/R antenna for MR image generation |
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- 2018-12-24 EP EP18215865.9A patent/EP3674736A1/en not_active Withdrawn
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- 2019-12-09 EP EP19813348.0A patent/EP3894878A1/en active Pending
- 2019-12-09 JP JP2021531804A patent/JP7197702B2/ja active Active
- 2019-12-09 WO PCT/EP2019/084112 patent/WO2020120347A1/en unknown
- 2019-12-09 CN CN201980081785.0A patent/CN113242980A/zh active Pending
- 2019-12-09 US US17/312,967 patent/US11519982B2/en active Active
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20160135711A1 (en) * | 2013-06-26 | 2016-05-19 | Hitachi, Ltd. | Magnetic resonance imaging device and rf coil assembly |
JPWO2014208501A1 (ja) * | 2013-06-26 | 2017-02-23 | 株式会社日立製作所 | 磁気共鳴イメージング装置及びrfコイルアッセンブリ |
JP2018502652A (ja) * | 2015-01-21 | 2018-02-01 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 多チャンネルrfコイルアセンブリの自動化されたインピーダンス調節 |
US20160338614A1 (en) * | 2015-05-20 | 2016-11-24 | Siemens Healthcare Gmbh | Magnetic resonance apparatus and method for positioning an object on a patient positioning device within an isocenter of a magnetic resonance scanner |
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Publication number | Publication date |
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EP3674736A1 (en) | 2020-07-01 |
JP7284861B2 (ja) | 2023-05-31 |
CN113242980A (zh) | 2021-08-10 |
US11519982B2 (en) | 2022-12-06 |
US20220050156A1 (en) | 2022-02-17 |
JP7197702B2 (ja) | 2022-12-27 |
WO2020120347A1 (en) | 2020-06-18 |
EP3894878A1 (en) | 2021-10-20 |
JP2022508319A (ja) | 2022-01-19 |
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