CA2967337C - Pulse sequences for low field magnetic resonance - Google Patents
Pulse sequences for low field magnetic resonance Download PDFInfo
- Publication number
- CA2967337C CA2967337C CA2967337A CA2967337A CA2967337C CA 2967337 C CA2967337 C CA 2967337C CA 2967337 A CA2967337 A CA 2967337A CA 2967337 A CA2967337 A CA 2967337A CA 2967337 C CA2967337 C CA 2967337C
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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]
- G01R33/445—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
-
- 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)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Electromagnetism (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3115673A CA3115673A1 (en) | 2014-11-11 | 2015-11-11 | 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 |
|---|---|---|---|
| CA3115673A Division CA3115673A1 (en) | 2014-11-11 | 2015-11-11 | Pulse sequences for low field magnetic resonance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2967337A1 CA2967337A1 (en) | 2016-05-19 |
| CA2967337C true CA2967337C (en) | 2022-05-10 |
Family
ID=55912067
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2967337A Expired - Fee Related CA2967337C (en) | 2014-11-11 | 2015-11-11 | Pulse sequences for low field magnetic resonance |
| CA3115673A Abandoned CA3115673A1 (en) | 2014-11-11 | 2015-11-11 | Pulse sequences for low field magnetic resonance |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3115673A Abandoned CA3115673A1 (en) | 2014-11-11 | 2015-11-11 | Pulse sequences for low field magnetic resonance |
Country Status (9)
| Country | Link |
|---|---|
| US (3) | US10591561B2 (cg-RX-API-DMAC7.html) |
| EP (1) | EP3217872A4 (cg-RX-API-DMAC7.html) |
| JP (2) | JP6674958B2 (cg-RX-API-DMAC7.html) |
| KR (1) | KR20170082600A (cg-RX-API-DMAC7.html) |
| CN (1) | CN106999092B (cg-RX-API-DMAC7.html) |
| AU (3) | AU2015346431B2 (cg-RX-API-DMAC7.html) |
| CA (2) | CA2967337C (cg-RX-API-DMAC7.html) |
| HK (1) | HK1243307A1 (cg-RX-API-DMAC7.html) |
| WO (1) | WO2016077438A2 (cg-RX-API-DMAC7.html) |
Families Citing this family (58)
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| EP4553527A3 (en) | 2014-09-05 | 2025-08-13 | Hyperfine, Inc. | Ferromagnetic augmentation for magnetic resonance imaging |
| DE102014220776B4 (de) * | 2014-10-14 | 2016-06-30 | Siemens Healthcare Gmbh | Verfahren zur Magnetresonanz-Bildgebung |
| AU2015346431B2 (en) | 2014-11-11 | 2020-06-18 | Hyperfine Operations, Inc. | Pulse sequences for low field magnetic resonance |
| US10813564B2 (en) | 2014-11-11 | 2020-10-27 | Hyperfine Research, Inc. | Low field magnetic resonance methods and apparatus |
| BR112017021999A2 (pt) | 2015-04-13 | 2018-07-10 | Hyperfine Res Inc | aparelhos e métodos de alimentação de bobina magnética |
| TWI626461B (zh) | 2015-05-12 | 2018-06-11 | Hyperfine Research, Inc. | 射頻線圈、包含射頻線圈之射頻組件及設備以及判定射頻線圈之組態的方法 |
| EP4379760B1 (en) | 2016-03-22 | 2025-10-15 | Hyperfine Operations, 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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| EP3382415A1 (en) * | 2017-03-30 | 2018-10-03 | Koninklijke Philips N.V. | Sub voxel resolution magnetic resonance fingerprinting imaging |
| US10551463B2 (en) * | 2017-09-21 | 2020-02-04 | Siemens Healthcare Gmbh | Method and magnetic resonance apparatus for reconstructing an image from data acquired from a frequency-modulated balanced steady-state free precession sequence |
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| MX2020011072A (es) | 2018-04-20 | 2020-11-06 | Hyperfine Res Inc | Proteccion desplegable para dispositivos portatiles de formacion de imagenes de resonancia magnetica. |
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| US12099106B2 (en) * | 2018-05-04 | 2024-09-24 | Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung eingetragener Verein | Arterial spin labeling with evaluation of inversion state of magnetization |
| BR112020021872A2 (pt) | 2018-05-21 | 2021-01-26 | Hyperfine Research, Inc. | métodos e aparelhos de magneto b0 para um sistema de ressonância magnética |
| AU2019272580A1 (en) | 2018-05-21 | 2020-11-12 | Hyperfine Operations, Inc. | Radio-frequency coil signal chain for a low-field MRI system |
| CN109085521B (zh) * | 2018-06-05 | 2020-02-21 | 中国石油大学(北京) | 三维核磁共振成像仪高压泄放补偿方法与装置 |
| TW202015621A (zh) | 2018-07-19 | 2020-05-01 | 美商超精細研究股份有限公司 | 在磁共振成像中患者定位之方法及設備 |
| CN113795764B (zh) | 2018-07-30 | 2025-03-25 | 海珀菲纳股份有限公司 | 用于磁共振图像重建的深度学习技术 |
| TW202012951A (zh) | 2018-07-31 | 2020-04-01 | 美商超精細研究股份有限公司 | 低場漫射加權成像 |
| EP4273793A3 (en) | 2018-08-15 | 2023-12-20 | Hyperfine, Inc. | Deep learning techniques for suppressing artefacts in magnetic resonance images |
| US11073584B2 (en) | 2018-09-06 | 2021-07-27 | Canon Medical Systems Corporation | Magnetic resonance imaging apparatus |
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| CN115808648A (zh) * | 2022-11-18 | 2023-03-17 | 无锡鸣石峻致医疗科技有限公司 | 一种磁共振系统振铃噪声的测量装置和方法 |
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| CN119762545B (zh) * | 2025-03-10 | 2025-07-01 | 首都医科大学附属北京天坛医院 | 一种mri不匹配评分方法、装置、设备、介质及产品 |
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| US20210223340A1 (en) | 2021-07-22 |
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| AU2022201765A1 (en) | 2022-04-07 |
| JP6674958B2 (ja) | 2020-04-01 |
| US10955500B2 (en) | 2021-03-23 |
| US20160131727A1 (en) | 2016-05-12 |
| AU2015346431A1 (en) | 2017-06-01 |
| CA2967337A1 (en) | 2016-05-19 |
| CN106999092B (zh) | 2022-03-15 |
| CN106999092A (zh) | 2017-08-01 |
| HK1243307A1 (zh) | 2018-07-13 |
| JP2017533811A (ja) | 2017-11-16 |
| WO2016077438A2 (en) | 2016-05-19 |
| AU2020204323B2 (en) | 2021-12-16 |
| JP2020078756A (ja) | 2020-05-28 |
| AU2020204323A1 (en) | 2020-07-16 |
| JP6952817B2 (ja) | 2021-10-27 |
| CA3115673A1 (en) | 2016-05-19 |
| EP3217872A2 (en) | 2017-09-20 |
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