CA2373536C - Determination d'une distribution empirique statistique du tenseur de diffusion dans un procede irm - Google Patents
Determination d'une distribution empirique statistique du tenseur de diffusion dans un procede irm Download PDFInfo
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- CA2373536C CA2373536C CA002373536A CA2373536A CA2373536C CA 2373536 C CA2373536 C CA 2373536C CA 002373536 A CA002373536 A CA 002373536A CA 2373536 A CA2373536 A CA 2373536A CA 2373536 C CA2373536 C CA 2373536C
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- diffusion
- weighted signals
- time point
- tensor
- diffusion weighted
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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
- G01R33/56341—Diffusion imaging
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- General Health & Medical Sciences (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)
Abstract
Dans cette invention, des signaux de résonance magnétique de tenseur de diffusion sont analysés. Des signaux de diffusion pondérés sont acquis, chaque signal présentant un groupe de plusieurs voxels (10). Les signaux de diffusion pondérés sont échantillonnés de manière à obtenir au moins un ensemble de signaux (11) de diffusion pondérés reéchantillonnés. Un tenseur de diffusion pour chaque voxel est déterminé à partir de chaque ensemble des signaux (12) de diffusion pondérés reéchantillonnés. Une distribution statistique empirique est déterminée pour une quantité associée au tenseur de diffusion à partir des tenseurs de diffusion déterminés à partir de l'ensemble de signaux (13) de diffusion pondérés reéchantillonnés.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13542799P | 1999-05-21 | 1999-05-21 | |
| US60/135,427 | 1999-05-21 | ||
| PCT/US2000/014290 WO2000072038A1 (fr) | 1999-05-21 | 2000-05-19 | Determination d'une distribution empirique statistique du tenseur de diffusion dans un procede irm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2373536A1 CA2373536A1 (fr) | 2000-11-30 |
| CA2373536C true CA2373536C (fr) | 2009-02-10 |
Family
ID=22468061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002373536A Expired - Fee Related CA2373536C (fr) | 1999-05-21 | 2000-05-19 | Determination d'une distribution empirique statistique du tenseur de diffusion dans un procede irm |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1204880A1 (fr) |
| JP (2) | JP4271873B2 (fr) |
| AU (1) | AU780940B2 (fr) |
| CA (1) | CA2373536C (fr) |
| WO (1) | WO2000072038A1 (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040142496A1 (en) | 2001-04-23 | 2004-07-22 | Nicholson Jeremy Kirk | Methods for analysis of spectral data and their applications: atherosclerosis/coronary heart disease |
| EP1384074A2 (fr) * | 2001-04-23 | 2004-01-28 | Metabometrix Limited | Procedes de diagnostic et de traitement de maladies des os |
| DE102005028475B4 (de) * | 2005-06-20 | 2008-04-03 | Siemens Ag | Verfahren und Vorrichtung zur Bestimmung von Koeffizienten eines Diffusionstensors mittels magnetischer Resonanz |
| SE537065C2 (sv) | 2012-05-04 | 2014-12-23 | Cr Dev Ab | Pulssekvensförfarande för MRI |
| CN104634805B (zh) * | 2013-11-13 | 2017-05-03 | 中国科学院苏州纳米技术与纳米仿生研究所 | 仿水黾腿结构液下接触角的测量方法 |
| EP3575815A1 (fr) * | 2018-06-01 | 2019-12-04 | IMEC vzw | Irm à diffusion pondérée combinée avec une technique d'imagerie à super-résolution |
| US20220022804A1 (en) * | 2018-12-10 | 2022-01-27 | Oxford University Innovation Limited | Brain imaging |
| SE543292C2 (en) * | 2019-04-26 | 2020-11-17 | Cr Dev Ab | A method of performing diffusion weighted magnetic resonance measurements |
| CN110288587A (zh) * | 2019-06-28 | 2019-09-27 | 重庆同仁至诚智慧医疗科技股份有限公司 | 一种缺血性脑卒中磁共振影像的病灶识别方法 |
| CN112649773B (zh) * | 2020-12-22 | 2023-05-26 | 上海联影医疗科技股份有限公司 | 磁共振扫描方法、装置、设备及存储介质 |
-
2000
- 2000-05-19 CA CA002373536A patent/CA2373536C/fr not_active Expired - Fee Related
- 2000-05-19 JP JP2000620373A patent/JP4271873B2/ja not_active Expired - Fee Related
- 2000-05-19 AU AU51603/00A patent/AU780940B2/en not_active Ceased
- 2000-05-19 WO PCT/US2000/014290 patent/WO2000072038A1/fr not_active Ceased
- 2000-05-19 EP EP00936262A patent/EP1204880A1/fr not_active Ceased
-
2008
- 2008-12-17 JP JP2008321417A patent/JP2009056340A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003500137A (ja) | 2003-01-07 |
| WO2000072038A1 (fr) | 2000-11-30 |
| CA2373536A1 (fr) | 2000-11-30 |
| AU780940B2 (en) | 2005-04-28 |
| JP2009056340A (ja) | 2009-03-19 |
| JP4271873B2 (ja) | 2009-06-03 |
| EP1204880A1 (fr) | 2002-05-15 |
| AU5160300A (en) | 2000-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20180522 |