Ferromagnetic augmentation for magnetic resonance imaging
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01R-033/56
G01R-033/36
G01R-033/38
G01R-033/385
G01R-033/44
G01R-033/58
G01R-033/48
H01F-007/02
H01F-007/06
G01R-033/381
G01R-033/383
G01R-033/3875
G01R-033/54
G01R-033/34
G01R-033/28
G01R-033/565
G01R-033/422
출원번호
US-0498432
(2017-04-26)
등록번호
US-10241177
(2019-03-26)
발명자
/ 주소
Poole, Michael Stephen
Rearick, Todd
Rothberg, Jonathan M.
출원인 / 주소
Hyperfine Research, Inc.
대리인 / 주소
Wolf, Greenfield & Sacks, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
15
초록▼
In some aspects, a magnetic system for use in a low-field MRI system. The magnetic system comprises at least one electromagnet configured to, when operated, generate a magnetic field to contribute to a B0 field for the low-field MRI system, and at least one permanent magnet to produce a magnetic fie
In some aspects, a magnetic system for use in a low-field MRI system. The magnetic system comprises at least one electromagnet configured to, when operated, generate a magnetic field to contribute to a B0 field for the low-field MRI system, and at least one permanent magnet to produce a magnetic field to contribute to the B0 field.
대표청구항▼
1. A magnetic system for use in a magnetic resonance imaging system, the magnetic system comprising: a B0 magnet configured to generate a magnetic field to contribute to a B0 magnetic field for the magnetic resonance imaging system;at least one ferromagnetic component configured to capture and direc
1. A magnetic system for use in a magnetic resonance imaging system, the magnetic system comprising: a B0 magnet configured to generate a magnetic field to contribute to a B0 magnetic field for the magnetic resonance imaging system;at least one ferromagnetic component configured to capture and direct at least some of the magnetic field generated by the B0 magnet to increase the magnetic flux density within an imaging region of the magnetic resonance imaging system;at least one laminate panel having at least one x-gradient coil, at least one y-gradient coil, and at least one z-gradient coil fabricated thereon to provide spatial encoding in x, y, and z directions, respectively;at least one housing having the B0 magnet and the at least one laminate panel included therein, wherein the imaging region is outside of the at least one housing; andat least one mechanism coupled to the housing to allow the magnetic system to be transported to different locations. 2. The magnetic system of claim 1, wherein the B0 magnet comprises at least one electromagnet configured to, when operated, generate a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system. 3. The magnetic system of claim 1, wherein the B0 magnet comprises at least one permanent magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system. 4. The magnetic system of claim 1, wherein the magnetic system is configured to produce the B0 magnetic field at a strength equal to or less than approximately 0.2 T and greater than or equal to approximately 0.1 T. 5. The magnetic system of claim 1, wherein the magnetic system is configured to produce the B0 magnetic field at a strength equal to or less than approximately 0.1 T and greater than or equal to approximately 50 mT. 6. The magnetic system of claim 1, wherein the magnetic system is configured to produce the B0 magnetic field at a strength equal to or less than approximately 50 mT and greater than or equal to approximately 20 mT. 7. The magnetic system of claim 1, wherein the magnetic system is configured to produce the B0 magnetic field at a strength equal to or less than approximately 20 mT and greater than or equal to approximately 10 mT. 8. The magnetic system of claim 1, wherein the B0 magnet comprises a first B0 magnet and a second B0 magnet arranged in a bi-planar configuration, and wherein the at least one ferromagnetic component is configured to increase a field strength and/or alter a homogeneity of the B0 field in the imaging region between the first B0 magnet and the second B0 magnet. 9. The magnetic system of claim 2, wherein the at least one electromagnet comprises a pair of B0 coils including a first B0 coil and a second B0 coil arranged in a bi-planar configuration, and wherein the at least one ferromagnetic component is configured to increase the field strength and/or alter the homogeneity of the B0 field in the imaging region between the first B0 coil and the second B0 coil. 10. The magnetic system of claim 9, wherein the at least one ferromagnetic component comprises a ferromagnetic structure connected to the first B0 coil and the second B0 coil to form a magnetic circuit that provides at least one return path for magnetic flux generated by the first B0 coil and the second B0 coil through the ferromagnetic structure. 11. The magnetic system of claim 1, wherein the at least one laminate panel comprises at least one B0 coil and/or at least one shim coil formed thereon. 12. The magnetic system of claim 11, wherein the at least one laminate panel comprises at least one B0 coil configured to contribute to the B0 magnetic field. 13. The magnetic system of claim 8, wherein the at least one laminate panel comprises a first laminate panel arranged proximate the first B0 magnet and a second laminate panel arranged proximate the second B0 magnet. 14. The magnetic system of claim 1, wherein the B0 magnet comprises: at least one electromagnet configured to, when operated, generate a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system; andat least one permanent magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system. 15. A magnetic resonance imaging system comprising: a magnetics system comprising:a B0 magnet configured to generate a magnetic field to contribute to a B0 magnetic field for the magnetic resonance imaging system;at least one ferromagnetic component configured to capture and direct at least some of the magnetic field generated by the B0 magnet to increase the magnetic flux density within an imaging region of the magnetic resonance imaging system;at least one laminate panel having at least one x-gradient coil, at least one y-gradient coil, and at least one z-gradient coil fabricated thereon to provide spatial encoding in x, y, and z directions, respectively;at least one power component configured to provide power to the magnetics system;a housing to support the magnetics system and house the at least one power component wherein the imaging region is outside of the housing; andat least one mechanism coupled to the housing to allow the magnetic resonance imaging system to be transported to different locations. 16. The magnetic resonance imaging system of claim 15, wherein the B0 magnet comprises at least one electromagnet configured to, when operated, generate a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system. 17. The magnetic resonance imaging system of claim 15, wherein the B0 magnet comprises at least one permanent magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system. 18. A magnetic resonance imaging system comprising: a magnetics system comprising:a B0 magnet configured to generate a magnetic field to contribute to a B0 magnetic field for the magnetic resonance imaging system;at least one ferromagnetic component configured to capture and direct at least some of the magnetic field generated by the B0 magnet to increase the magnetic flux density within an imaging region of the magnetic resonance imaging system;at least one power component configured to provide power to the magnetics system;a housing to support the magnetics system and house the at least one power component, wherein the imaging region is outside of the housing; andat least one mechanism coupled to the housing to allow the magnetic resonance imaging system to be transported to different locations,wherein the magnetics system is configured to produce the B0 magnetic field at a strength equal to or less than approximately 0.2 T. 19. The magnetic resonance imaging system of claim 18, wherein the magnetics system is configured to produce the B0 magnetic field at a strength equal to or less than approximately 0.1 T and greater than or equal to approximately 50 mT. 20. The magnetic resonance imaging system of claim 18, wherein the magnetics system is configured to produce the B0 magnetic field at a strength equal to or less than approximately 0.50 mT and greater than or equal to approximately 20 mT.
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이 특허에 인용된 특허 (15)
Haim Rotem IL; Ehud Katznelson IL, Adjustable hybrid magnetic apparatus.
Carlson Joseph W. (Kensington CA) Kaufman Leon (San Francisco CA), Method and apparatus for MRI using selectively shaped image volume of homogeneous NMR polarizing field.
Damadian Raymond V. (Woodbury NY) Giambalvo Anthony J. (Kings Park NY) Shenoy Rajendra K. (Commack NY) Votruba Jan V. (Port Jefferson Station NY), NMR screening method.
Danby Gordon T. (Melville NY) Damadian Raymond V. (Melville NY) Minkoff Lawrence A. (Melville NY), Nuclear magnetic resonance apparatus including permanent magnet configuration.
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