DE102004031204B4 - Verfahren und Vorrichtung zum Reduzieren von HF-Leistung bei Hochfeld-MR-Bildgebung unter Verwendung von Multiphasen-HF-Plus-Anregungswinkeln - Google Patents
Verfahren und Vorrichtung zum Reduzieren von HF-Leistung bei Hochfeld-MR-Bildgebung unter Verwendung von Multiphasen-HF-Plus-Anregungswinkeln Download PDFInfo
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- DE102004031204B4 DE102004031204B4 DE102004031204.4A DE102004031204A DE102004031204B4 DE 102004031204 B4 DE102004031204 B4 DE 102004031204B4 DE 102004031204 A DE102004031204 A DE 102004031204A DE 102004031204 B4 DE102004031204 B4 DE 102004031204B4
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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
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
- G01R33/5613—Generating steady state signals, e.g. low flip angle sequences [FLASH]
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/612,596 US6956374B2 (en) | 2003-07-02 | 2003-07-02 | Method and apparatus to reduce RF power in high field MR imaging incorporating multi-phase RF pulse flip angles |
| US10/612,596 | 2003-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102004031204A1 DE102004031204A1 (de) | 2005-01-20 |
| DE102004031204B4 true DE102004031204B4 (de) | 2014-04-24 |
Family
ID=33541400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102004031204.4A Expired - Lifetime DE102004031204B4 (de) | 2003-07-02 | 2004-06-28 | Verfahren und Vorrichtung zum Reduzieren von HF-Leistung bei Hochfeld-MR-Bildgebung unter Verwendung von Multiphasen-HF-Plus-Anregungswinkeln |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6956374B2 (https=) |
| JP (1) | JP4898100B2 (https=) |
| DE (1) | DE102004031204B4 (https=) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002050574A1 (en) | 2000-12-21 | 2002-06-27 | University Of Virginia Patent Foundation | Method and apparatus for spin-echo-train mr imaging using prescribed signal evolutions |
| USRE45725E1 (en) | 2000-12-21 | 2015-10-06 | University Of Virginia Patent Foundation | Method and apparatus for spin-echo-train MR imaging using prescribed signal evolutions |
| JP2007068796A (ja) * | 2005-09-08 | 2007-03-22 | Ge Medical Systems Global Technology Co Llc | Rfパルス印加方法およびmri装置 |
| US7635977B2 (en) * | 2006-04-06 | 2009-12-22 | Catholic Healthcare West, California Nonprofit Public Benefit Corporation | MR imaging with an RF pulse producing reduced magnetization transfer |
| US7868618B2 (en) * | 2006-06-16 | 2011-01-11 | Hitachi Medical Corporation | Magnetic resonance imaging apparatus |
| WO2008044501A1 (fr) * | 2006-10-06 | 2008-04-17 | Hitachi Medical Corporation | Dispositif d'imagerie par résonance magnétique |
| US7479783B2 (en) * | 2006-11-15 | 2009-01-20 | Beth Israel Deaconess Medical Center, Inc. | Echo train preparation for fast spin-echo acquisition |
| US8483798B2 (en) * | 2007-01-15 | 2013-07-09 | General Electric Company | System and method for metabolic MR imaging of a hyperpolarized agent |
| US8228060B2 (en) * | 2007-06-25 | 2012-07-24 | General Electric Company | Method and apparatus for generating a flip angle schedule for a spin echo train pulse sequence |
| DE102007043445A1 (de) * | 2007-09-12 | 2009-04-09 | Siemens Ag | Verfahren zur Aufnahme einer Magnetresonanztomographiemesssequenz mit einer Magnetresonanztomographieeinrichtung sowie zugehörige Mangetresonanztomographieeinrichtung |
| US7710115B2 (en) * | 2007-09-14 | 2010-05-04 | The Board Of Trustees Of The Leland Stanford Junior University | Independent phase modulation for efficient dual-band 3D imaging |
| US8526754B2 (en) * | 2009-05-28 | 2013-09-03 | Aptina Imaging Corporation | System for enhancing depth of field with digital image processing |
| JP5611661B2 (ja) | 2009-06-04 | 2014-10-22 | 株式会社東芝 | 磁気共鳴イメージング装置 |
| US8653817B2 (en) | 2010-04-02 | 2014-02-18 | General Electric Company | Accelerated pseudo-random data magnetic resonance imaging system and method |
| JP5960134B2 (ja) * | 2011-06-09 | 2016-08-02 | 株式会社日立製作所 | 磁気共鳴イメージング装置及びフリップ角決定方法 |
| CN108318843B (zh) * | 2011-09-22 | 2021-11-16 | 东芝医疗系统株式会社 | 磁共振成像装置以及磁共振成像方法 |
| JP6084430B2 (ja) * | 2012-10-30 | 2017-02-22 | 株式会社日立製作所 | 再収束rfパルスのフリップ角制御法及び磁気共鳴イメージング装置 |
| JPWO2014126134A1 (ja) * | 2013-02-15 | 2017-02-02 | 株式会社日立製作所 | 磁気共鳴イメージング装置及び不要コントラスト低減方法 |
| JP6804228B2 (ja) * | 2016-08-01 | 2020-12-23 | キヤノンメディカルシステムズ株式会社 | 磁気共鳴イメージング装置 |
| US11255942B2 (en) * | 2016-08-30 | 2022-02-22 | Canon Medical Systems Corporation | Magnetic resonance imaging apparatus |
| CN107638179B (zh) * | 2017-08-28 | 2020-09-04 | 上海联影医疗科技有限公司 | 磁共振翻转角的计算方法、系统和计算机可读存储介质 |
| JP7223580B2 (ja) * | 2018-01-26 | 2023-02-16 | キヤノンメディカルシステムズ株式会社 | 磁気共鳴イメージング装置 |
| CN112230171B (zh) * | 2020-09-08 | 2022-11-25 | 上海联影医疗科技股份有限公司 | 磁共振接收机、磁共振系统和信号接收方法 |
| CN117388782A (zh) * | 2023-10-19 | 2024-01-12 | 中科微影(泰州)医疗科技有限公司 | 一种磁共振成像射频功率自动校正方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5704357A (en) * | 1994-05-31 | 1998-01-06 | Kabushiki Kaisha Toshiba | Method of producing MR image and MRI system |
| EP1083439A2 (en) * | 1999-09-08 | 2001-03-14 | GE Yokogawa Medical Systems Ltd. | MRI spin excitation within a predetermined specific absorption rate (SAR) limit |
| DE10219528A1 (de) * | 2002-05-02 | 2003-11-13 | Philips Intellectual Property | Schnelles Kernresonanz-Bildgebungsverfahren mit Gradienten-Echos |
| DE102004005174A1 (de) * | 2003-02-06 | 2004-08-19 | GE Medical Systems Global Technology Company, LLC, Waukesha | Verfahren zur Anregung bei einer NMR-Untersuchung |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4901019A (en) * | 1986-08-18 | 1990-02-13 | The General Hospital Corporation | Three-dimensional imaging |
| US4970457A (en) * | 1989-04-05 | 1990-11-13 | The Regents Of The University Of California | MRI compensated for spurious rapid variations in static magnetic field during a single MRI sequence |
| US5150053A (en) * | 1989-07-28 | 1992-09-22 | The Board Of Trustees Of The Leland Stanford Junior University | Magnetic resonance imaging of short T2 species with improved contrast |
| US5499629A (en) * | 1994-02-01 | 1996-03-19 | Board Of Trustees Of The Leland Stanford Junior University | Slice profile stabilization for segmented k-space magnetic resonance imaging |
| US5545992A (en) * | 1995-08-03 | 1996-08-13 | General Electric Company | Fast cardiac gated NMR acquisition with improved T1 contrast |
| US6028428A (en) * | 1998-04-09 | 2000-02-22 | Cunningham; Charles H. | Multiband selective RF pulse construction for NMR measurement sequences |
| JP4263015B2 (ja) * | 2003-04-30 | 2009-05-13 | 株式会社日立メディコ | 磁気共鳴イメージング装置 |
-
2003
- 2003-07-02 US US10/612,596 patent/US6956374B2/en not_active Expired - Lifetime
-
2004
- 2004-06-28 DE DE102004031204.4A patent/DE102004031204B4/de not_active Expired - Lifetime
- 2004-06-30 JP JP2004194081A patent/JP4898100B2/ja not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5704357A (en) * | 1994-05-31 | 1998-01-06 | Kabushiki Kaisha Toshiba | Method of producing MR image and MRI system |
| EP1083439A2 (en) * | 1999-09-08 | 2001-03-14 | GE Yokogawa Medical Systems Ltd. | MRI spin excitation within a predetermined specific absorption rate (SAR) limit |
| DE10219528A1 (de) * | 2002-05-02 | 2003-11-13 | Philips Intellectual Property | Schnelles Kernresonanz-Bildgebungsverfahren mit Gradienten-Echos |
| DE102004005174A1 (de) * | 2003-02-06 | 2004-08-19 | GE Medical Systems Global Technology Company, LLC, Waukesha | Verfahren zur Anregung bei einer NMR-Untersuchung |
Also Published As
| Publication number | Publication date |
|---|---|
| US20050001617A1 (en) | 2005-01-06 |
| JP2005021690A (ja) | 2005-01-27 |
| US6956374B2 (en) | 2005-10-18 |
| DE102004031204A1 (de) | 2005-01-20 |
| JP4898100B2 (ja) | 2012-03-14 |
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| Date | Code | Title | Description |
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| R012 | Request for examination validly filed |
Effective date: 20110524 |
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| R016 | Response to examination communication | ||
| R016 | Response to examination communication | ||
| R016 | Response to examination communication | ||
| R018 | Grant decision by examination section/examining division | ||
| R020 | Patent grant now final | ||
| R020 | Patent grant now final |
Effective date: 20150127 |
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| R071 | Expiry of right |