NL2001591C2 - Systeem en werkwijze voor amplitudereductie in HF-pulsontwerp. - Google Patents
Systeem en werkwijze voor amplitudereductie in HF-pulsontwerp. Download PDFInfo
- Publication number
- NL2001591C2 NL2001591C2 NL2001591A NL2001591A NL2001591C2 NL 2001591 C2 NL2001591 C2 NL 2001591C2 NL 2001591 A NL2001591 A NL 2001591A NL 2001591 A NL2001591 A NL 2001591A NL 2001591 C2 NL2001591 C2 NL 2001591C2
- Authority
- NL
- Netherlands
- Prior art keywords
- pulse
- gradient
- rotational speed
- amplitude
- gradient waveform
- Prior art date
Links
- 238000013461 design Methods 0.000 title claims description 31
- 238000000034 method Methods 0.000 title description 46
- 230000009467 reduction Effects 0.000 title description 13
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000003384 imaging method Methods 0.000 claims description 14
- 230000006870 function Effects 0.000 description 24
- 238000013459 approach Methods 0.000 description 9
- 230000005415 magnetization Effects 0.000 description 9
- 238000003860 storage Methods 0.000 description 8
- 230000005284 excitation Effects 0.000 description 5
- 238000002595 magnetic resonance imaging Methods 0.000 description 4
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 4
- 238000003491 array Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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
- G01R33/483—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
- G01R33/4836—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 using an RF pulse being spatially selective in more than one spatial dimension, e.g. a 2D pencil-beam excitation pulse
-
- 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
-
- 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
- G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
- G01R33/4824—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a non-Cartesian trajectory
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Radiology & Medical Imaging (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75047807 | 2007-05-18 | ||
| US11/750,478 US7737690B2 (en) | 2007-05-18 | 2007-05-18 | System and method for amplitude reduction in RF pulse design |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL2001591A1 NL2001591A1 (nl) | 2008-11-20 |
| NL2001591C2 true NL2001591C2 (nl) | 2009-09-29 |
Family
ID=40026873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2001591A NL2001591C2 (nl) | 2007-05-18 | 2008-05-19 | Systeem en werkwijze voor amplitudereductie in HF-pulsontwerp. |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7737690B2 (enExample) |
| JP (1) | JP2008284361A (enExample) |
| NL (1) | NL2001591C2 (enExample) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7705594B2 (en) * | 2007-03-30 | 2010-04-27 | General Electric Company | System and method for designing improved RF pulse profiles |
| DE102008004256B4 (de) * | 2008-01-14 | 2010-01-07 | Siemens Aktiengesellschaft | SAR-optimierte Ansteuerung eines Spulenarrays |
| US8085046B2 (en) * | 2008-08-28 | 2011-12-27 | The General Hospital Corporation | Coil array mode compression for parallel transmission magnetic resonance imaging |
| US8049499B2 (en) * | 2009-03-20 | 2011-11-01 | Case Western Reserve University | Controlling multi-channel transmitter effects on specific absorption rate |
| EP2414858A1 (en) | 2009-04-02 | 2012-02-08 | Koninklijke Philips Electronics N.V. | Sar reduction in parallel transmission by k-space dependent rf pulse selection |
| CN102109586B (zh) * | 2009-12-23 | 2015-02-11 | Ge医疗系统环球技术有限公司 | 磁共振梯度脉冲波设计方法及其装置 |
| JP5780512B2 (ja) * | 2010-06-07 | 2015-09-16 | 株式会社東芝 | 磁気共鳴イメージング装置 |
| CN102288929B (zh) * | 2011-05-11 | 2013-04-17 | 浙江大学 | 用于磁共振系统的激发脉冲序列生成器 |
| CN102283649B (zh) * | 2011-05-11 | 2012-11-21 | 浙江大学 | 用于磁共振成像的三维空间选择性激励的序列设计方法 |
| CN104583793B (zh) * | 2012-07-25 | 2019-07-16 | 皇家飞利浦有限公司 | 能在不同转换速率工作的mri梯度放大器 |
| DE102012215255B3 (de) * | 2012-08-28 | 2014-02-27 | Siemens Aktiengesellschaft | Ansteuerung eines Magnetresonanzsystems unter Berücksichtigung aktueller komponentenbedingter B1-Feld-Maximalwerte |
| WO2014080781A1 (ja) * | 2012-11-20 | 2014-05-30 | 株式会社 日立メディコ | 磁気共鳴イメージング装置、及び、ｓａｒの予測方法 |
| CN103323805B (zh) * | 2013-05-29 | 2015-04-29 | 杭州电子科技大学 | 基于小波域稀疏表示的speed快速磁共振成像方法 |
| US9766314B2 (en) * | 2014-04-21 | 2017-09-19 | General Electric Company | Systems and methods for design of magnetic resonance imaging slice-select pulses |
| DE102016203757B4 (de) | 2016-03-08 | 2018-05-30 | Siemens Healthcare Gmbh | Abschnittsweises Optimieren von radialen MR-Pulssequenzen |
| WO2017173617A1 (en) * | 2016-04-07 | 2017-10-12 | Shanghai United Imaging Healthcare Co., Ltd. | System and method for fast imaging in magnetic resonance imaging |
| 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 |
| US10753994B2 (en) * | 2017-04-21 | 2020-08-25 | University Of Virginia Patent Foundation | Systems and methods for simultaneous multi-slice imaging |
| 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 |
| JP7169795B2 (ja) * | 2018-07-11 | 2022-11-11 | 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および高周波増幅回路 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105152A (en) * | 1990-03-22 | 1992-04-14 | The Board Of Trustees Of The Leland Stanford Junior University | Magnetic resonance imaging and spectroscopy using a linear class of large tip-angle selective excitation pulses |
| US5313163A (en) * | 1992-08-12 | 1994-05-17 | General Electric Company | Sampling-ring saturation pulse for two-dimensional magnetic resonance selective excitation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5402067A (en) * | 1993-08-04 | 1995-03-28 | Board Of Trustees Of The Leland Stanford Junior University | Apparatus and method for rare echo imaging using k-space spiral coverage |
| US6313630B1 (en) * | 1999-08-25 | 2001-11-06 | Ge Medical Systems Global Technology Company Llc | Modular gradient system for MRI system |
| DE10214736B4 (de) * | 2002-04-03 | 2005-03-31 | Siemens Ag | Verfahren zur Optimierung der k-Raum-Trajektorien bei der Ortskodierung eines Magnetresonanz-Tomographiegerätes und Gerät zur Durchführung des Verfahrens |
| US7030611B2 (en) * | 2002-12-27 | 2006-04-18 | Kabushiki Kaisha Toshiba | Magnetic resonance imaging apparatus and method incorporating multi-mode gradient coil unit |
| US7046003B2 (en) * | 2004-09-20 | 2006-05-16 | The Board Of Trustees Of The Leland Stanford Junior University | Reduced-time variable rate excitation pulses for rapid MRI |
| 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 |
-
2007
- 2007-05-18 US US11/750,478 patent/US7737690B2/en not_active Expired - Fee Related
-
2008
- 2008-05-15 JP JP2008128230A patent/JP2008284361A/ja active Pending
- 2008-05-19 NL NL2001591A patent/NL2001591C2/nl not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5105152A (en) * | 1990-03-22 | 1992-04-14 | The Board Of Trustees Of The Leland Stanford Junior University | Magnetic resonance imaging and spectroscopy using a linear class of large tip-angle selective excitation pulses |
| US5313163A (en) * | 1992-08-12 | 1994-05-17 | General Electric Company | Sampling-ring saturation pulse for two-dimensional magnetic resonance selective excitation |
Also Published As
| Publication number | Publication date |
|---|---|
| US7737690B2 (en) | 2010-06-15 |
| US20080284439A1 (en) | 2008-11-20 |
| JP2008284361A (ja) | 2008-11-27 |
| NL2001591A1 (nl) | 2008-11-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AD1A | A request for search or an international type search has been filed | ||
| RD2N | Patents in respect of which a decision has been taken or a report has been made (novelty report) |
Effective date: 20090527 |
|
| PD2B | A search report has been drawn up | ||
| V1 | Lapsed because of non-payment of the annual fee |
Effective date: 20141201 |