IL110428A - Flow measurement by a method of complex differences of magnetic resonance imaging - Google Patents
Flow measurement by a method of complex differences of magnetic resonance imagingInfo
- Publication number
- IL110428A IL110428A IL11042894A IL11042894A IL110428A IL 110428 A IL110428 A IL 110428A IL 11042894 A IL11042894 A IL 11042894A IL 11042894 A IL11042894 A IL 11042894A IL 110428 A IL110428 A IL 110428A
- Authority
- IL
- Israel
- Prior art keywords
- array
- values
- difference array
- flow
- phase
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 41
- 238000005259 measurement Methods 0.000 title description 12
- 238000002595 magnetic resonance imaging Methods 0.000 title description 5
- 238000012937 correction Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 230000005415 magnetization Effects 0.000 claims description 7
- 238000005481 NMR spectroscopy Methods 0.000 description 47
- 230000005284 excitation Effects 0.000 description 16
- 230000008569 process Effects 0.000 description 15
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 9
- 210000004204 blood vessel Anatomy 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000003491 array Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010606 normalization Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000013515 script Methods 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 108010023321 Factor VII Proteins 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000004351 coronary vessel Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- BWRPOTMYGIJREE-GDIQTHMSSA-N methyl (2s)-4-methyl-2-[[(2s)-2-[[(2s)-3-methyl-2-[[2-methyl-2-[[(2s)-4-methyl-2-[[(2s)-2-[[(2s)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]propanoyl]amino]pentanoyl]amino]propanoyl]amino]butanoyl]amino]propanoyl]amino]pentanoate;hyd Chemical compound O.COC(=O)[C@H](CC(C)C)NC(=O)[C@H](C)NC(=O)[C@H](C(C)C)NC(=O)C(C)(C)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](C)NC(=O)[C@H](C(C)C)NC(=O)OC(C)(C)C.COC(=O)[C@H](CC(C)C)NC(=O)[C@H](C)NC(=O)[C@H](C(C)C)NC(=O)C(C)(C)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](C)NC(=O)[C@H](C(C)C)NC(=O)OC(C)(C)C BWRPOTMYGIJREE-GDIQTHMSSA-N 0.000 description 1
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000264 spin echo pulse sequence Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 108010029246 tert-butyloxycarbonyl-valyl-alanyl-leucyl-2-aminoisobutyryl-valyl-alanyl-leucyl methyl ester Proteins 0.000 description 1
- 238000011144 upstream manufacturing 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
- G01R33/54—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
- G01R33/56308—Characterization of motion or flow; Dynamic imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
- G01F1/708—Measuring the time taken to traverse a fixed distance
- G01F1/716—Measuring the time taken to traverse a fixed distance using electron paramagnetic resonance [EPR] or nuclear magnetic resonance [NMR]
-
- 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
- G01R33/56308—Characterization of motion or flow; Dynamic imaging
- G01R33/56316—Characterization of motion or flow; Dynamic imaging involving phase contrast techniques
Landscapes
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Fluid Mechanics (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/107,110 US5408180A (en) | 1993-08-13 | 1993-08-13 | Measurement of flow using a complex difference method of magnetic resonance imaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL110428A0 IL110428A0 (en) | 1994-10-21 |
| IL110428A true IL110428A (en) | 1996-05-14 |
Family
ID=22314897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL11042894A IL110428A (en) | 1993-08-13 | 1994-07-25 | Flow measurement by a method of complex differences of magnetic resonance imaging |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5408180A (de) |
| EP (1) | EP0638816A3 (de) |
| JP (1) | JP3506149B2 (de) |
| IL (1) | IL110428A (de) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5408180A (en) | 1993-08-13 | 1995-04-18 | Wisconsin Alumni Research Foundation | Measurement of flow using a complex difference method of magnetic resonance imaging |
| US5509412A (en) * | 1994-08-24 | 1996-04-23 | Wisconsin Alumni Research Foundation | Magnetic resonance imaging of blood volume |
| JP3585139B2 (ja) * | 1996-02-19 | 2004-11-04 | 株式会社日立メディコ | 磁気共鳴診断装置における流速計算装置 |
| US5900731A (en) * | 1996-12-17 | 1999-05-04 | General Electric Company | Encoding flow information using MR signal magnitude |
| US6031374A (en) * | 1997-04-11 | 2000-02-29 | Epstein; Frederick H. | Method for extracting deformations from velocity-encoded magnetic resonance images of the heart |
| US6094591A (en) * | 1998-04-10 | 2000-07-25 | Sunnybrook Health Science Centre | Measurement of coronary flow reserve with MR oximetry |
| US6980845B1 (en) * | 1998-04-13 | 2005-12-27 | The Trustees Of The University Of Pennsylvania | Multi-slice cerebral blood flow imaging with continuous arterial spin labeling MRI |
| US6192264B1 (en) * | 1998-12-28 | 2001-02-20 | General Electric Company | Method and system for MRI venography including arterial and venous discrimination |
| US6188922B1 (en) * | 1999-01-08 | 2001-02-13 | Wisconsin Alumni Research Foundation | Phase contrast imaging using interleaved projection data |
| EP1230529B9 (de) | 1999-11-16 | 2007-02-14 | Wollin Ventures, Inc. | Magnetische-resonanz-durchflussmesser und -durchflussmessverfahren |
| US6486667B1 (en) * | 2000-03-31 | 2002-11-26 | Koninklijke Philips Electronics N.V. | Combination of fluid-attenuated inversion-recovery complex images acquired using magnetic resonance imaging |
| US7049816B2 (en) * | 2004-09-30 | 2006-05-23 | Wisconsin Alumni Research Foundation | Magnetic resonance imaging with dual velocity encoded projection reconstruction acquisition |
| DE102005027483B3 (de) * | 2005-06-14 | 2006-12-07 | Technische Universität München | Verfahren und Steuereinrichtung zur Gewinnung von Magnetresonanzdaten für Bildgebung sowie Computerprogrammprodukt |
| US7285954B2 (en) * | 2005-09-14 | 2007-10-23 | The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services | Imaging and reconstruction of partial field of view in phase contrast MRI |
| JP5127841B2 (ja) * | 2007-12-25 | 2013-01-23 | 株式会社日立メディコ | 磁気共鳴イメージング装置及び磁化率強調画像撮影方法 |
| US8427147B2 (en) * | 2009-04-10 | 2013-04-23 | Wisconsin Alumni Research Foundation | Magnetic resonance imaging with fat suppression by combining phase rotating data with phase shifted data in K-space |
| WO2011056122A1 (en) | 2009-11-03 | 2011-05-12 | Waahlin Anders | A method and an apparatus for determining body vessel characteristics using pc-mri imaging |
| EP2910906B1 (de) * | 2014-02-24 | 2020-05-27 | Krohne AG | Verfahren zum Betreiben eines kernmagnetischen Durchflussmessgeräts |
| US10871538B2 (en) * | 2016-11-17 | 2020-12-22 | Koninklijke Philips N.V. | Planning support for selective arterial spin labeling MR imaging methods |
| EP4381306A1 (de) | 2021-08-02 | 2024-06-12 | Cambridge Enterprise Limited | Verfahren und systeme zur verbesserten rekonstruktion von magnetresonanzgeschwindigkeitsdaten und verfahren zur komprimierung von strömungsdaten eines fluids |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4689560A (en) * | 1985-08-16 | 1987-08-25 | Picker International, Inc. | Low R.F. dosage magnetic resonance imaging of high velocity flows |
| US4683431A (en) * | 1985-08-16 | 1987-07-28 | Picker International, Inc. | Magnetic resonance imaging of high velocity flows |
| US5101156A (en) * | 1990-08-09 | 1992-03-31 | General Electric | Rapid flow measurement using an nmr imaging system |
| US5031624A (en) * | 1990-08-17 | 1991-07-16 | Wisconsin Alumni Research Foundation | Phase contrast, line-scanned method for NMR angiography |
| US5226418A (en) * | 1991-08-01 | 1993-07-13 | General Electric Company | Phase correction of complex - difference processed magnetic resonance angiograms |
| US5363042A (en) * | 1993-08-12 | 1994-11-08 | General Electric Company | Methods for measurement of longitudinal spin relaxation times in moving liquids |
| US5408180A (en) | 1993-08-13 | 1995-04-18 | Wisconsin Alumni Research Foundation | Measurement of flow using a complex difference method of magnetic resonance imaging |
-
1993
- 1993-08-13 US US08/107,110 patent/US5408180A/en not_active Expired - Fee Related
-
1994
- 1994-07-21 JP JP19185694A patent/JP3506149B2/ja not_active Expired - Fee Related
- 1994-07-25 IL IL11042894A patent/IL110428A/en not_active IP Right Cessation
- 1994-08-10 EP EP94112464A patent/EP0638816A3/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07323022A (ja) | 1995-12-12 |
| JP3506149B2 (ja) | 2004-03-15 |
| EP0638816A3 (de) | 1995-10-18 |
| IL110428A0 (en) | 1994-10-21 |
| US5408180A (en) | 1995-04-18 |
| EP0638816A2 (de) | 1995-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FF | Patent granted | ||
| KB | Patent renewed | ||
| KB | Patent renewed | ||
| KB | Patent renewed | ||
| EXP | Patent expired |