AU2015346431B2 - Pulse sequences for low field magnetic resonance - Google Patents
Pulse sequences for low field magnetic resonance Download PDFInfo
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- AU2015346431B2 AU2015346431B2 AU2015346431A AU2015346431A AU2015346431B2 AU 2015346431 B2 AU2015346431 B2 AU 2015346431B2 AU 2015346431 A AU2015346431 A AU 2015346431A AU 2015346431 A AU2015346431 A AU 2015346431A AU 2015346431 B2 AU2015346431 B2 AU 2015346431B2
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Classifications
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- 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]
- G01R33/445—MR involving a non-standard magnetic field B0, e.g. of low magnitude as in the earth's magnetic field or in nanoTesla spectroscopy, comprising a polarizing magnetic field for pre-polarisation, B0 with a temporal variation of its magnitude or direction such as field cycling of B0 or rotation of the direction of B0, or spatially inhomogeneous B0 like in fringe-field MR or in stray-field 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3671—Electrical details, e.g. matching or coupling of the coil to the receiver involving modulation of the quality factor of the RF coil
-
- 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
- G01R33/4816—NMR imaging of samples with ultrashort relaxation times such as solid samples, e.g. MRI using ultrashort TE [UTE], single point imaging, constant time 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
- G01R33/54—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
- G01R33/5613—Generating steady state signals, e.g. low flip angle sequences [FLASH]
- G01R33/5614—Generating steady state signals, e.g. low flip angle sequences [FLASH] using a fully balanced steady-state free precession [bSSFP] pulse sequence, e.g. trueFISP
-
- 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
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0
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- 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
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/5659—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the RF magnetic field, e.g. spatial inhomogeneities of the RF magnetic field
-
- 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/3806—Open magnet assemblies for improved access to the sample, e.g. C-type or U-type magnets
-
- 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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- High Energy & Nuclear Physics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
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- Electromagnetism (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020204323A AU2020204323B2 (en) | 2014-11-11 | 2020-06-29 | Pulse sequences for low field magnetic resonance |
| AU2022201765A AU2022201765A1 (en) | 2014-11-11 | 2022-03-15 | Pulse sequences for low field magnetic resonance |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462078378P | 2014-11-11 | 2014-11-11 | |
| US62/078,378 | 2014-11-11 | ||
| PCT/US2015/060117 WO2016077438A2 (en) | 2014-11-11 | 2015-11-11 | Pulse sequences for low field magnetic resonance |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020204323A Division AU2020204323B2 (en) | 2014-11-11 | 2020-06-29 | Pulse sequences for low field magnetic resonance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2015346431A1 AU2015346431A1 (en) | 2017-06-01 |
| AU2015346431B2 true AU2015346431B2 (en) | 2020-06-18 |
Family
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2015346431A Ceased AU2015346431B2 (en) | 2014-11-11 | 2015-11-11 | Pulse sequences for low field magnetic resonance |
| AU2020204323A Ceased AU2020204323B2 (en) | 2014-11-11 | 2020-06-29 | Pulse sequences for low field magnetic resonance |
| AU2022201765A Abandoned AU2022201765A1 (en) | 2014-11-11 | 2022-03-15 | Pulse sequences for low field magnetic resonance |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020204323A Ceased AU2020204323B2 (en) | 2014-11-11 | 2020-06-29 | Pulse sequences for low field magnetic resonance |
| AU2022201765A Abandoned AU2022201765A1 (en) | 2014-11-11 | 2022-03-15 | Pulse sequences for low field magnetic resonance |
Country Status (9)
| Country | Link |
|---|---|
| US (3) | US10591561B2 (enExample) |
| EP (1) | EP3217872A4 (enExample) |
| JP (2) | JP6674958B2 (enExample) |
| KR (1) | KR20170082600A (enExample) |
| CN (1) | CN106999092B (enExample) |
| AU (3) | AU2015346431B2 (enExample) |
| CA (2) | CA2967337C (enExample) |
| HK (1) | HK1243307A1 (enExample) |
| WO (1) | WO2016077438A2 (enExample) |
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| CN107110932B (zh) * | 2014-09-05 | 2020-09-01 | 海珀菲纳研究股份有限公司 | 低场磁共振成像方法和设备 |
| DE102014220776B4 (de) * | 2014-10-14 | 2016-06-30 | Siemens Healthcare Gmbh | Verfahren zur Magnetresonanz-Bildgebung |
| CN106999092B (zh) | 2014-11-11 | 2022-03-15 | 海珀菲纳股份有限公司 | 用于低场磁共振的脉冲序列 |
| US10813564B2 (en) | 2014-11-11 | 2020-10-27 | Hyperfine Research, Inc. | Low field magnetic resonance methods and apparatus |
| TWI710782B (zh) | 2015-04-13 | 2020-11-21 | 美商超精細研究股份有限公司 | 用於對操作磁共振成像系統之至少一梯度線圈提供電力之裝置及方法以及磁共振成像系統 |
| JP6784697B2 (ja) | 2015-05-12 | 2020-11-11 | ハイパーファイン リサーチ，インコーポレイテッド | 高周波コイルの方法および装置 |
| WO2017165513A1 (en) | 2016-03-22 | 2017-09-28 | Hyperfine Research, Inc. | Methods and apparatus for magnetic field shimming |
| TWI667487B (zh) | 2016-09-29 | 2019-08-01 | 美商超精細研究股份有限公司 | 射頻線圈調諧方法及裝置 |
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| KR20210013567A (ko) | 2018-05-21 | 2021-02-04 | 하이퍼파인 리서치, 인크. | 저자계 mri 시스템용 무선 주파수 코일 신호 체인 |
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| CN106999092B (zh) | 2022-03-15 |
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| CN106999092A (zh) | 2017-08-01 |
| CA3115673A1 (en) | 2016-05-19 |
| US20200249297A1 (en) | 2020-08-06 |
| WO2016077438A2 (en) | 2016-05-19 |
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