JPH10509893A - ハードウェア最適化勾配波形を得るために無効期間を最小にする方法及び装置 - Google Patents
ハードウェア最適化勾配波形を得るために無効期間を最小にする方法及び装置Info
- Publication number
- JPH10509893A JPH10509893A JP8518741A JP51874196A JPH10509893A JP H10509893 A JPH10509893 A JP H10509893A JP 8518741 A JP8518741 A JP 8518741A JP 51874196 A JP51874196 A JP 51874196A JP H10509893 A JPH10509893 A JP H10509893A
- Authority
- JP
- Japan
- Prior art keywords
- waveform
- gradient
- period
- minimum
- invalid period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims abstract description 34
- 230000004044 response Effects 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims description 18
- 238000013461 design Methods 0.000 claims description 15
- 238000005457 optimization Methods 0.000 claims description 11
- 238000003384 imaging method Methods 0.000 claims description 10
- 238000002595 magnetic resonance imaging Methods 0.000 claims description 10
- 230000000747 cardiac effect Effects 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 5
- 206010038669 Respiratory arrest Diseases 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000001965 increasing effect Effects 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000001131 transforming effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004846 x-ray emission Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Geophysics And Detection Of Objects (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/346,130 US5512825A (en) | 1994-11-25 | 1994-11-25 | Method of minimizing dead-periods in magnetic resonance imaging pulse sequences and associated apparatus |
| US08/346,130 | 1994-11-25 | ||
| PCT/US1995/011167 WO1996017261A1 (en) | 1994-11-25 | 1995-09-01 | Method of minimizing dead-periods in order to obtain hardware optimized gradient waveforms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10509893A true JPH10509893A (ja) | 1998-09-29 |
Family
ID=23358098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8518741A Pending JPH10509893A (ja) | 1994-11-25 | 1995-09-01 | ハードウェア最適化勾配波形を得るために無効期間を最小にする方法及び装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5512825A (OSRAM) |
| EP (1) | EP0809810A1 (OSRAM) |
| JP (1) | JPH10509893A (OSRAM) |
| AU (1) | AU3502495A (OSRAM) |
| WO (1) | WO1996017261A1 (OSRAM) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014155843A (ja) * | 2013-02-18 | 2014-08-28 | Siemens Aktiengesellschaft | 磁気共鳴装置用のパルスシーケンスを最適化するための方法、磁気共鳴装置用のパルスシーケンスを最適化するためのパルスシーケンス最適化装置、磁気共鳴装置ならびにコンピュータプログラム |
Families Citing this family (64)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6263229B1 (en) | 1998-11-13 | 2001-07-17 | Johns Hopkins University School Of Medicine | Miniature magnetic resonance catheter coils and related methods |
| US6675033B1 (en) | 1999-04-15 | 2004-01-06 | Johns Hopkins University School Of Medicine | Magnetic resonance imaging guidewire probe |
| US6898454B2 (en) | 1996-04-25 | 2005-05-24 | The Johns Hopkins University | Systems and methods for evaluating the urethra and the periurethral tissues |
| US7236816B2 (en) * | 1996-04-25 | 2007-06-26 | Johns Hopkins University | Biopsy and sampling needle antennas for magnetic resonance imaging-guided biopsies |
| US6636038B1 (en) | 1997-05-28 | 2003-10-21 | Siemens Aktiengesellschaft | Method and apparatus for controlling a pulse sequence in a magnetic resonance tomography system |
| AU7837898A (en) | 1997-06-12 | 1998-12-30 | Johns Hopkins University School Of Medicine, The | Method for measuring myocardial motion and the like |
| US6031375A (en) * | 1997-11-26 | 2000-02-29 | The Johns Hopkins University | Method of magnetic resonance analysis employing cylindrical coordinates and an associated apparatus |
| US6453187B1 (en) | 1998-08-10 | 2002-09-17 | The Johns Hopkins University | Method of employing angle images for measuring object motion in tagged magnetic resonance imaging |
| US6288539B1 (en) | 1998-09-10 | 2001-09-11 | Pheno Imaging, Inc. | System for measuring an embryo, reproductive organs, and tissue in an animal |
| US6701176B1 (en) | 1998-11-04 | 2004-03-02 | Johns Hopkins University School Of Medicine | Magnetic-resonance-guided imaging, electrophysiology, and ablation |
| US7844319B2 (en) * | 1998-11-04 | 2010-11-30 | Susil Robert C | Systems and methods for magnetic-resonance-guided interventional procedures |
| US8244370B2 (en) * | 2001-04-13 | 2012-08-14 | Greatbatch Ltd. | Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices |
| US6147491A (en) * | 1998-12-30 | 2000-11-14 | General Electric Company | MRI system with fractional decimation of acquired data using a two-dimensional fourier transformation |
| US7848788B2 (en) * | 1999-04-15 | 2010-12-07 | The Johns Hopkins University | Magnetic resonance imaging probe |
| WO2000062672A1 (en) | 1999-04-15 | 2000-10-26 | Surgi-Vision | Methods for in vivo magnetic resonance imaging |
| WO2001033493A1 (en) * | 1999-10-29 | 2001-05-10 | Pheno Imaging, Inc. | System for measuring tissue size and marbling in an animal |
| AU2001238012A1 (en) | 2000-02-01 | 2001-08-14 | Surgi-Vision, Inc. | Magnetic resonance imaging transseptal needle antenna |
| US6597935B2 (en) | 2000-02-10 | 2003-07-22 | The Johns Hopkins University | Method for harmonic phase magnetic resonance imaging |
| EP1269206A2 (en) | 2000-03-24 | 2003-01-02 | Surgi-Vision | Apparatus, systems and methods for in vivo magnetic resonance imaging |
| US6566877B1 (en) * | 2000-12-26 | 2003-05-20 | Koninklijke Philips Electronics, N.V. | Band-limited gradient waveforms |
| US6400150B1 (en) * | 2001-04-02 | 2002-06-04 | Regents Of The University Of Minnesota | NMR spectroscopy data recovery method and apparatus |
| US8977355B2 (en) * | 2001-04-13 | 2015-03-10 | Greatbatch Ltd. | EMI filter employing a capacitor and an inductor tank circuit having optimum component values |
| US8219208B2 (en) * | 2001-04-13 | 2012-07-10 | Greatbatch Ltd. | Frequency selective passive component networks for active implantable medical devices utilizing an energy dissipating surface |
| US8457760B2 (en) | 2001-04-13 | 2013-06-04 | Greatbatch Ltd. | Switched diverter circuits for minimizing heating of an implanted lead and/or providing EMI protection in a high power electromagnetic field environment |
| CA2482202C (en) | 2001-04-13 | 2012-07-03 | Surgi-Vision, Inc. | Systems and methods for magnetic-resonance-guided interventional procedures |
| US9295828B2 (en) | 2001-04-13 | 2016-03-29 | Greatbatch Ltd. | Self-resonant inductor wound portion of an implantable lead for enhanced MRI compatibility of active implantable medical devices |
| US8509913B2 (en) * | 2001-04-13 | 2013-08-13 | Greatbatch Ltd. | Switched diverter circuits for minimizing heating of an implanted lead and/or providing EMI protection in a high power electromagnetic field environment |
| US8600519B2 (en) * | 2001-04-13 | 2013-12-03 | Greatbatch Ltd. | Transient voltage/current protection system for electronic circuits associated with implanted leads |
| US8989870B2 (en) * | 2001-04-13 | 2015-03-24 | Greatbatch Ltd. | Tuned energy balanced system for minimizing heating and/or to provide EMI protection of implanted leads in a high power electromagnetic field environment |
| US20070088416A1 (en) | 2001-04-13 | 2007-04-19 | Surgi-Vision, Inc. | Mri compatible medical leads |
| US6778847B2 (en) | 2002-05-03 | 2004-08-17 | The Trustees Of Columbia University In The City Of New York | System and method for MRI tagging using spatial modulation of magnetization |
| CA2487140C (en) | 2002-05-29 | 2011-09-20 | Surgi-Vision, Inc. | Magnetic resonance probes |
| US7561909B1 (en) | 2002-09-16 | 2009-07-14 | The United States Of America As Represented By The Department Of Health And Human Services | MRI navigator methods and systems |
| US7993285B2 (en) * | 2002-11-05 | 2011-08-09 | Boston Scientific Scimed, Inc. | Medical device having flexible distal tip |
| US7301341B2 (en) * | 2003-10-08 | 2007-11-27 | The Board Of Trustees Of The Leland Stanford Junior University | MRI gradient waveform design using convex optimization |
| US20100191306A1 (en) * | 2006-01-25 | 2010-07-29 | Greatbatch Ltd. | Transient voltage suppression circuit for an implanted rfid chip |
| US8903505B2 (en) | 2006-06-08 | 2014-12-02 | Greatbatch Ltd. | Implantable lead bandstop filter employing an inductive coil with parasitic capacitance to enhance MRI compatibility of active medical devices |
| DE102006034397B3 (de) * | 2006-07-25 | 2007-12-27 | Siemens Ag | Verfahren zum Erstellen und Ausführen einer Messsequenz für ein Magnet-Resonanz-Gerät sowie Magnet-Resonanz-Gerät und Computerprogramm |
| US9108066B2 (en) | 2008-03-20 | 2015-08-18 | Greatbatch Ltd. | Low impedance oxide resistant grounded capacitor for an AIMD |
| US10080889B2 (en) | 2009-03-19 | 2018-09-25 | Greatbatch Ltd. | Low inductance and low resistance hermetically sealed filtered feedthrough for an AIMD |
| US8447414B2 (en) * | 2008-12-17 | 2013-05-21 | Greatbatch Ltd. | Switched safety protection circuit for an AIMD system during exposure to high power electromagnetic fields |
| US8095224B2 (en) * | 2009-03-19 | 2012-01-10 | Greatbatch Ltd. | EMI shielded conduit assembly for an active implantable medical device |
| US8030920B2 (en) * | 2009-06-03 | 2011-10-04 | General Electric Company | Method and system for modifying pulse sequences |
| WO2010144419A2 (en) | 2009-06-08 | 2010-12-16 | Surgivision, Inc. | Mri-guided interventional systems that can track and generate dynamic visualizations of flexible intrabody devices in near real time |
| JP2012529977A (ja) | 2009-06-16 | 2012-11-29 | エムアールアイ・インターヴェンションズ，インコーポレイテッド | Ｍｒｉ誘導装置、及び準リアルタイムに該装置を追跡し、該装置の動的可視化を生成することができるｍｒｉ誘導介入システム |
| US8882763B2 (en) | 2010-01-12 | 2014-11-11 | Greatbatch Ltd. | Patient attached bonding strap for energy dissipation from a probe or a catheter during magnetic resonance imaging |
| US10596369B2 (en) | 2011-03-01 | 2020-03-24 | Greatbatch Ltd. | Low equivalent series resistance RF filter for an active implantable medical device |
| US9427596B2 (en) | 2013-01-16 | 2016-08-30 | Greatbatch Ltd. | Low impedance oxide resistant grounded capacitor for an AIMD |
| US10350421B2 (en) | 2013-06-30 | 2019-07-16 | Greatbatch Ltd. | Metallurgically bonded gold pocket pad for grounding an EMI filter to a hermetic terminal for an active implantable medical device |
| US9931514B2 (en) | 2013-06-30 | 2018-04-03 | Greatbatch Ltd. | Low impedance oxide resistant grounded capacitor for an AIMD |
| US10272252B2 (en) | 2016-11-08 | 2019-04-30 | Greatbatch Ltd. | Hermetic terminal for an AIMD having a composite brazed conductive lead |
| US11198014B2 (en) | 2011-03-01 | 2021-12-14 | Greatbatch Ltd. | Hermetically sealed filtered feedthrough assembly having a capacitor with an oxide resistant electrical connection to an active implantable medical device housing |
| WO2014039080A1 (en) | 2012-09-07 | 2014-03-13 | Heartvista, Inc. | Methods for optimal gradient design and fast generic waveform switching |
| USRE46699E1 (en) | 2013-01-16 | 2018-02-06 | Greatbatch Ltd. | Low impedance oxide resistant grounded capacitor for an AIMD |
| DE102013221062B4 (de) * | 2013-10-17 | 2015-11-05 | Siemens Aktiengesellschaft | Optimierung einer Magnetresonanz-Sequenz mithilfe eines automatischen Bestimmens von veränderbaren und unveränderbaren Zeitintervallen |
| DE102013225415B4 (de) * | 2013-12-10 | 2015-10-22 | Siemens Aktiengesellschaft | Optimierung einer MR-Pulssequenz durch vereinfachte Gradientenverläufe |
| DE102015213595A1 (de) * | 2015-07-20 | 2017-01-26 | Siemens Healthcare Gmbh | Verfahren zu einer Optimierung einer Reihenfolge von zwei oder mehr Messprotokollen für zumindest eine Magnetresonanzuntersuchung sowie eine Magnetresonanzvorrichtung hierzu |
| DE102015225546A1 (de) | 2015-12-17 | 2017-06-22 | Siemens Healthcare Gmbh | Optimierung einer Magnetresonanz-Steuerungssequenz |
| DE102016202240A1 (de) | 2016-02-15 | 2017-08-17 | Siemens Healthcare Gmbh | Magnetresonanz-bildgebung |
| US10249415B2 (en) | 2017-01-06 | 2019-04-02 | Greatbatch Ltd. | Process for manufacturing a leadless feedthrough for an active implantable medical device |
| US10905888B2 (en) | 2018-03-22 | 2021-02-02 | Greatbatch Ltd. | Electrical connection for an AIMD EMI filter utilizing an anisotropic conductive layer |
| US10912945B2 (en) | 2018-03-22 | 2021-02-09 | Greatbatch Ltd. | Hermetic terminal for an active implantable medical device having a feedthrough capacitor partially overhanging a ferrule for high effective capacitance area |
| US10996299B2 (en) | 2018-08-22 | 2021-05-04 | General Electric Company | Systems and methods for waveform optimization for oblique scans |
| CN115728690A (zh) * | 2021-08-31 | 2023-03-03 | 通用电气精准医疗有限责任公司 | Mri系统及用于确定倾斜扫描的波形的方法和装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4766381A (en) * | 1987-08-12 | 1988-08-23 | Vanderbilt University | Driven inversion spin echo magnetic resonance imaging |
| JPH0330756A (ja) * | 1989-06-29 | 1991-02-08 | Toshiba Corp | 磁気共鳴イメージング装置 |
| US5099208A (en) * | 1989-10-05 | 1992-03-24 | Vanderbilt University | Method for magnetic resonance imaging and related apparatus |
| FI91475C (fi) * | 1991-10-31 | 1994-06-27 | Salcomp Oy | Menetelmä ja piiri värikuvaputken dynaamisen konvergenssin säätöjännitteiden muodostamiseksi |
-
1994
- 1994-11-25 US US08/346,130 patent/US5512825A/en not_active Expired - Lifetime
-
1995
- 1995-09-01 WO PCT/US1995/011167 patent/WO1996017261A1/en not_active Ceased
- 1995-09-01 EP EP95931684A patent/EP0809810A1/en not_active Withdrawn
- 1995-09-01 JP JP8518741A patent/JPH10509893A/ja active Pending
- 1995-09-01 AU AU35024/95A patent/AU3502495A/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014155843A (ja) * | 2013-02-18 | 2014-08-28 | Siemens Aktiengesellschaft | 磁気共鳴装置用のパルスシーケンスを最適化するための方法、磁気共鳴装置用のパルスシーケンスを最適化するためのパルスシーケンス最適化装置、磁気共鳴装置ならびにコンピュータプログラム |
Also Published As
| Publication number | Publication date |
|---|---|
| US5512825A (en) | 1996-04-30 |
| EP0809810A1 (en) | 1997-12-03 |
| AU3502495A (en) | 1996-06-19 |
| WO1996017261A1 (en) | 1996-06-06 |
| EP0809810A4 (OSRAM) | 1997-12-03 |
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