JP4885129B2 - 連邦政府によって後援された研究に関する磁気共鳴エラストグラフィ表現のための圧力駆動ドライバ - Google Patents
連邦政府によって後援された研究に関する磁気共鳴エラストグラフィ表現のための圧力駆動ドライバ Download PDFInfo
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- JP4885129B2 JP4885129B2 JP2007515225A JP2007515225A JP4885129B2 JP 4885129 B2 JP4885129 B2 JP 4885129B2 JP 2007515225 A JP2007515225 A JP 2007515225A JP 2007515225 A JP2007515225 A JP 2007515225A JP 4885129 B2 JP4885129 B2 JP 4885129B2
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- 238000012045 magnetic resonance elastography Methods 0.000 title claims 2
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Images
Classifications
-
- 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
- G01R33/56358—Elastography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0048—Detecting, measuring or recording by applying mechanical forces or stimuli
- A61B5/0051—Detecting, measuring or recording by applying mechanical forces or stimuli by applying vibrations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Biophysics (AREA)
- Radiology & Medical Imaging (AREA)
- Vascular Medicine (AREA)
- Signal Processing (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
12 ボア
14 MRIシステムマグネット
16 分極コイル
18 勾配コイル
20 RFコイル
22 受動アクチュエータ
24 可撓性チューブ
26 音響ドライバ
28 波形生成器及び増幅器
30 MRIシステム制御器
34 包囲体
36 開口部
40 フランジ
56 入力孔
60 可撓膜
70 患者の脚
72 集合管
74 弾性ホース(チューブ)
Claims (8)
- 磁気共鳴イメージング(MRI)システムを使用して対象物における関心領域の磁気共鳴エラストグラフィスキャンを実行中に前記対象物上にストレスを生成するドライバであって、
前記MRIシステムから離れて配置され、音響エネルギを生成するように作動可能な音響ドライバと、
前記MRIシステム内に配置され、前記対象物の外部表面の肌に対して位置付けられるように開口部と前記開口部の全域にわたって張られた可撓膜とを備えた包囲体を有する受動アクチュエータと、
前記離れて配置された音響ドライバによって生成された前記音響エネルギに応答して前記可撓膜が振動するように前記音響ドライバを前記受動アクチュエータに音響的に結合し、前記対象物の前記外部表面の前記肌へ振動ストレスを伝達して前記振動ストレスを前記対象物における関心領域へ搬送するチューブと
の組み合わせからなるドライバ。 - 請求項1に記載のドライバにおいて、前記音響ドライバは包囲体の開口部上に取り付けられた拡声器を含み、前記チューブは第2の開口部を通って前記包囲体の内部と音響的に結合することを特徴とするドライバ。
- 請求項1に記載のドライバにおいて、第2の開口部は前記受動アクチュエータ包囲体の中に形成され、前記チューブは前記第2の開口部を通って前記包囲体の内部と音響的に結合することを特徴とするドライバ。
- 前記チューブは可撓性であることを特徴とする請求項1に記載のドライバ。
- 請求項1に記載のドライバにおいて、前記受動アクチュエータ及び前記チューブは、前記MRIシステムによって生成された磁場を実質的に混乱させない素材からできていることを特徴とするドライバ。
- 請求項5に記載のドライバにおいて、前記受動アクチュエータはポリカーボネイト素材からできていることを特徴とするドライバ。
- 磁気共鳴イメージング(MRI)システム用のドライバであって、
印加された電流に応じて作動して音響エネルギを生成することができる音響ドライバと、
前記MRIシステムによって生成された磁場を混乱させない素材で構成され、一方の側に加えられた音響エネルギに応答して動く可動要素を有する受動アクチュエータと、
前記音響ドライバに接続され、前記受動アクチュエータに接続するために実質的な距離にわたって延びるチューブと、
の組み合わせからなり、前記チューブは、前記音響ドライバからの音響エネルギを前記受動アクチュエータの可動要素の前記一方の側と結合するように作動可能であり、
前記可動要素は、その内部に結合された音響エネルギに応答して直径が伸張及び収縮する弾性チューブであることを特徴とするドライバ。 - 請求項7に記載のドライバにおいて、前記弾性チューブは、前記MRIシステムに配置された被験者の付属肢のまわりに巻くために構成されることを特徴とするドライバ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/860,174 | 2004-06-03 | ||
US10/860,174 US7034534B2 (en) | 2004-06-03 | 2004-06-03 | Pressure activated driver for magnetic resonance elastography |
PCT/US2005/018030 WO2005120344A1 (en) | 2004-06-03 | 2005-05-23 | Pressure activated driver for magnetic resonance elastography |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008501416A JP2008501416A (ja) | 2008-01-24 |
JP4885129B2 true JP4885129B2 (ja) | 2012-02-29 |
Family
ID=34982081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007515225A Active JP4885129B2 (ja) | 2004-06-03 | 2005-05-23 | 連邦政府によって後援された研究に関する磁気共鳴エラストグラフィ表現のための圧力駆動ドライバ |
Country Status (4)
Country | Link |
---|---|
US (1) | US7034534B2 (ja) |
EP (1) | EP1773193B1 (ja) |
JP (1) | JP4885129B2 (ja) |
WO (1) | WO2005120344A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9602928B2 (en) | 2014-03-18 | 2017-03-21 | Kabushiki Kaisha Toshiba | Speaker system having a sound collection unit for combining sound waves |
US9747885B2 (en) | 2015-03-26 | 2017-08-29 | Kabushiki Kaisha Toshiba | Noise reduction system |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
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US7307423B2 (en) | 2005-05-05 | 2007-12-11 | Wisconsin A.Umni Research Foundation | Magnetic resonance elastography using multiple drivers |
DE102006037160B4 (de) * | 2006-04-13 | 2009-10-08 | Charité - Universitätsmedizin Berlin | Vorrichtung für die Magnetresonanzelastographie (MRE) |
US7368913B2 (en) * | 2006-06-30 | 2008-05-06 | General Electric Company | Apparatus and method of providing forced airflow to a surface of a gradient coil |
US7979109B2 (en) * | 2006-10-12 | 2011-07-12 | Lawrence Group Medical Device Trust | Needle driver for magnetic resonance elastography |
WO2008144391A1 (en) * | 2007-05-16 | 2008-11-27 | Mayo Foundation For Medical Education And Research | Portal vein pressure measurement using elastography |
KR100894307B1 (ko) | 2007-12-03 | 2009-04-24 | 연세대학교 산학협력단 | 자기 공명 탄성 기법을 위한 구동 장치 |
US8706192B2 (en) * | 2008-02-16 | 2014-04-22 | Geng Li | Magnetic resonance elastograph system with hydraulic driver |
US8615285B2 (en) * | 2008-04-04 | 2013-12-24 | Mayo Foundation For Medical Education And Research | Passive acoustic driver for magnetic resonance elastography |
US9562960B2 (en) * | 2008-04-04 | 2017-02-07 | Mayo Foundation For Medical Education And Research | Method for magnetic resonance elastography inversion using a finite medium model |
US8281663B2 (en) * | 2008-07-14 | 2012-10-09 | Mayo Foundation For Medical Education And Research | Active acoustic driver for magnetic resonance elastography |
US20100049029A1 (en) * | 2008-08-20 | 2010-02-25 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Piezoelectric magnetic resonance elastograph (mre) driver system |
US8222901B2 (en) * | 2008-08-20 | 2012-07-17 | Sunnybrook Health Sciences Centre | System and method for intracorporeal elastography |
WO2010114959A1 (en) * | 2009-04-02 | 2010-10-07 | Mayo Foundation For Medical Education And Research | Single-sided magnetic resonance imaging system suitable for performing magnetic resonance elastography |
US20100331690A1 (en) * | 2009-06-30 | 2010-12-30 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Systems and Techniques for Providing Elasticity Graphs |
US8508229B2 (en) * | 2009-07-30 | 2013-08-13 | Mayo Foundation For Medical Education And Research | Shear mode pressure-activated driver for magnetic resonance elastography |
CA2771180C (en) | 2009-08-26 | 2017-10-24 | University Of Kansas | Device, system, and method for mechanosensory nerve ending stimulation |
JP5376593B2 (ja) * | 2009-11-09 | 2013-12-25 | 公立大学法人首都大学東京 | 磁気共鳴エラストグラム(mre)の作成方法及び作成装置、並びに磁気共鳴エラストグラム(mre)作成用のボールバイブレータ |
US20130239690A1 (en) * | 2010-08-25 | 2013-09-19 | National University Corporation Chiba University | Mre excitation apparatus, excitation system, and excitation method |
EP2676143B1 (en) | 2011-02-15 | 2023-11-01 | Hemosonics, Llc | Characterization of blood hemostasis and oxygen transport parameters |
US9173589B2 (en) | 2011-03-30 | 2015-11-03 | Mayo Foundation For Medical Education And Research | System and method for inertial magnetic resonance elastography driver for use with interventional medical device |
US8971602B2 (en) * | 2011-04-22 | 2015-03-03 | Mayo Foundation For Medical Education And Research | Method for magnetic resonance elastography using transient waveforms |
US9149204B2 (en) * | 2011-04-22 | 2015-10-06 | Mayo Foundation For Medical Education And Research | Flexible passive acoustic driver for magnetic resonance elastography |
CN102920457B (zh) * | 2011-12-12 | 2015-03-11 | 中国科学院深圳先进技术研究院 | 磁共振弹性成像精确度检测方法 |
US9295407B2 (en) * | 2012-05-10 | 2016-03-29 | Ohio State Innovation Foundation | Hydraulically-powered system and method for achieving magnetic resonance elastography |
US10117640B2 (en) | 2012-09-28 | 2018-11-06 | The University Of British Columbia | Quantitative elastography with tracked 2D ultrasound transducers |
WO2015009339A1 (en) | 2013-07-19 | 2015-01-22 | Mayo Foundation For Medical Education And Research | System and method for measurement of shear wave speed from multi-directional wave fields |
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US10524688B2 (en) | 2014-11-14 | 2020-01-07 | Ohio State Innovation Foundation | Hydraulically-powered and hybrid hydraulic-pneumatic systems and methods for achieving magnetic resonance elastography |
US9726647B2 (en) | 2015-03-17 | 2017-08-08 | Hemosonics, Llc | Determining mechanical properties via ultrasound-induced resonance |
DE102015204868A1 (de) * | 2015-03-18 | 2016-09-22 | Charité - Universitätsmedizin Berlin | Elastographieeinrichtung und Elastographieverfahren |
US10132905B2 (en) * | 2016-01-05 | 2018-11-20 | Mayo Foundation For Medical Education And Research | Systems and methods for a magnetic resonance elastography phantom |
US11350844B2 (en) | 2016-11-23 | 2022-06-07 | Mayo Foundation For Medical Education And Research | System and method for generating nonalcoholic fatty liver disease activity score (NAS) using magnetic resonance elastography |
JP7171047B2 (ja) * | 2019-03-19 | 2022-11-15 | 東京都公立大学法人 | 撮影装置 |
WO2021102091A1 (en) * | 2019-11-19 | 2021-05-27 | Smith & Nephew, Inc. | Elastography for ligament characterization |
CN110916665B (zh) * | 2019-12-11 | 2023-07-07 | 大连医科大学附属第一医院 | 一种磁共振扩散加权图像影像组学特征处理方法 |
US11852704B2 (en) * | 2022-03-17 | 2023-12-26 | Siemens Healthcare Gmbh | Motor for a MR elastography transducer |
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2004
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-
2005
- 2005-05-23 WO PCT/US2005/018030 patent/WO2005120344A1/en active Application Filing
- 2005-05-23 EP EP05767742.9A patent/EP1773193B1/en active Active
- 2005-05-23 JP JP2007515225A patent/JP4885129B2/ja active Active
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9602928B2 (en) | 2014-03-18 | 2017-03-21 | Kabushiki Kaisha Toshiba | Speaker system having a sound collection unit for combining sound waves |
US9747885B2 (en) | 2015-03-26 | 2017-08-29 | Kabushiki Kaisha Toshiba | Noise reduction system |
Also Published As
Publication number | Publication date |
---|---|
WO2005120344A1 (en) | 2005-12-22 |
EP1773193B1 (en) | 2014-10-22 |
JP2008501416A (ja) | 2008-01-24 |
US20050270029A1 (en) | 2005-12-08 |
US7034534B2 (en) | 2006-04-25 |
EP1773193A1 (en) | 2007-04-18 |
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