CA2147556A1 - Method for Reconstruction for MRI Signals - Google Patents
Method for Reconstruction for MRI SignalsInfo
- Publication number
- CA2147556A1 CA2147556A1 CA2147556A CA2147556A CA2147556A1 CA 2147556 A1 CA2147556 A1 CA 2147556A1 CA 2147556 A CA2147556 A CA 2147556A CA 2147556 A CA2147556 A CA 2147556A CA 2147556 A1 CA2147556 A1 CA 2147556A1
- Authority
- CA
- Canada
- Prior art keywords
- reconstruction
- linear
- continuously varying
- signal acquisition
- magnetic
- 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.)
- Granted
Links
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
-
- 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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
A method and an apparatus are used in magnetic resonance imaging. In generating the resonance signals, the magnetic gradient fields are varied to represent a scan on a non-linear, continuously varying curve. One specific example given is a multi-leafed rose. New mathematical treatments of the resultant signal are presented, which are used to define a novel method for the reconstruction of an image from these signals based on k-plane coordinates naturally associated with the signal acquisition. The superior image quality that the new reconstruction method gives means that non-linear, continuously varying acquisition in k-space may be used so that magnetic field switching and high cost hardware is not required, while signal acquisition times are significantly reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002147556A CA2147556C (en) | 1995-04-21 | 1995-04-21 | Method for reconstruction for mri signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002147556A CA2147556C (en) | 1995-04-21 | 1995-04-21 | Method for reconstruction for mri signals |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2147556A1 true CA2147556A1 (en) | 1996-10-22 |
CA2147556C CA2147556C (en) | 2000-06-20 |
Family
ID=4155700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002147556A Expired - Fee Related CA2147556C (en) | 1995-04-21 | 1995-04-21 | Method for reconstruction for mri signals |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2147556C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7840049B2 (en) | 2005-04-18 | 2010-11-23 | Siemens Aktiengesellschaft | MR image reconstruction method and MR apparatus using propeller imaging |
-
1995
- 1995-04-21 CA CA002147556A patent/CA2147556C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7840049B2 (en) | 2005-04-18 | 2010-11-23 | Siemens Aktiengesellschaft | MR image reconstruction method and MR apparatus using propeller imaging |
Also Published As
Publication number | Publication date |
---|---|
CA2147556C (en) | 2000-06-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |