[특허]Shielded and open MRI magnet

[미국특허] Shielded and open MRI magnet 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01V-003/00
출원번호	US-0547083 (1995-10-23)
발명자 / 주소	Dorri Bizhan (Clifton Park NY) Laskaris Evangelos T. (Schenectady NY) Ogle Michele D. (Burnt Hills NY) Havens Timothy J. (Florence SC)
출원인 / 주소	General Electric Company (Schenectady NY 02)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

A shielded and open magnetic resonance imaging (MRI) magnet having two spaced-apart, generally toroidal-shaped superconductive coil assemblies. Each coil assembly has a coil housing containing a generally annular-shaped superconductive main and a radially-outwardly spaced-apart shielding coil carrying electric currents in opposing directions. Preferably, supplemental shielding is provided with the addition of: a generally annular permanent magnet configuration internal to, or external of, the coil housings; a generally-non-permanently-magnetized external ferromagnetic shield having at least a portion positioned longitudinally between the coil housings, an external resistive coil; or combinations thereof.

대표청구항 ▼

An open magnetic resonance imaging magnet comprising: a) a first superconductive coil assembly including: (1) a generally toroidal-shaped first coil housing surrounding a first bore and having a generally longitudinal first axis; (2) a generally annular-shaped first superconductive main coil generally coaxially aligned with said first axis, disposed within said first coil housing, and carrying a first main electric current in a first direction; and (3) a generally annular-shaped first superconductive shielding coil generally coaxially aligned with said first axis, disposed within said first coil housing, and carrying a first shielding electric current in a direction opposite to said first direction, wherein said first superconductive shielding coil is spaced radially outward and radially apart from said first superconductive main coil; and b) a second superconductive coil assembly including: (1) a generally toroidal-shaped second coil housing longitudinally spaced apart from said first coil housing, surrounding a second bore, and having a generally longitudinal second axis generally coaxially aligned with said first axis; (2) a generally annular-shaped second superconductive main coil generally coaxially aligned with said second axis, disposed within said second coil housing, and carrying a second main electric current in said first direction; and (3) a generally annular-shaped second superconductive shielding coil generally coaxially aligned with said second axis, disposed within said second coil housing, and carrying a second shielding electric current in said opposite direction, wherein said second superconductive shielding coil is spaced radially outward and radially apart from said second superconductive main coil.

이 특허를 인용한 특허 (36) 인용/피인용 타임라인 분석

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Laskaris,Evangelos; Huang,Xianrui; Ogle,Michele Dollar; Palmo,Michael A.; Thompson,Paul S., Cold mass support structure and helium vessel of actively shielded high field open MRI magnets.
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Kucharczyk John ; Gillies George T., Combined magnetic resonance imaging and magnetic stereotaxis surgical apparatus and processes.
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Katznelson Ehud,ILX ; Zuk Yuval,ILX ; Rotem Haim,ILX, Hybrid magnetic apparatus for use in medical applications.
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Kucharczyk, John; Truwit, Charles L., Intracranial pressure monitoring device and method for use in MR-guided drug delivery.
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Mulder Gerardus B. J.,NLX ; Peeren Gerardus N.,NLX, MRI apparatus having a short uniform field magnet with an internal space.
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Ariyoshi,Akihiko, MRI magnet apparatus for vertically and circularly suppressing the magnetic fringe field.
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Rapoport, Uri, MRI safety device means and methods thereof.
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Rapoport, Uri, MRI safety device means and methods thereof.
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Goldie, Frederick Thomas David; Clayton, Patrick Brian, Magnet apparatus.
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Laskaris Evangelos Trifon ; Palmo Michael Anthony ; Ogle Michele Dollar, Magnet having shielding.
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Laskaris Evangelos Trifon ; Palmo Michael Anthony ; Ogle Michele Dollar, Magnet including shielding.
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Zuk, Yuval; Katz, Yoav; Katznelson, Ehud; Rotem, Haim, Magnetic apparatus for MRI.
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Takeshima, Hirotaka; Kawano, Hajime; Kakugawa, Shigeru; Hino, Noriaki, Magnetic resonance imaging apparatus.
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Takeshima, Hirotaka; Kawano, Hajime; Kakugawa, Shigeru; Hino, Noriaki, Magnetic resonance imaging apparatus.
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Strauss, Noa; Leiser, Irad; Dezorayev, Aviad; Azulay, Shmuel; Rapoport, Uri, Magnetic resonance imaging system including a protective cover and a camera.
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Huang,Jinhua; Jarvis,Peter, Method and apparatus for magnetic resonance imaging.
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Laskaris Evangelos Trifon ; Palmo Michael Anthony ; Ogle Michele Dollar ; Amm Bruce Campbell, Open and shielded superconductive magnet.
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Laskaris Evangelos Trifon ; Palmo Michael Anthony ; Xu Bu-Xin ; Ogle Michele Dollar ; Amm Bruce Campbell, Open magnet having shielding.
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Huang, Xianrui; Palmo, Jr., Michael Anthony; Laskaris, Evangelos Trifon; Amm, Bruce Campbell, Open magnet with recessed field shaping coils.
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Laskaris Evangelos Trifon ; Palmo Michael Anthony ; Xu Bu-Xin, Open superconductive magnet having shielding.
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Laskaris Evangelos Trifon ; Alexander James Pellegrino ; Grey ; Jr. Delton Andrews ; Lehmann Greg Alan, Pole piece assembly and open magnet having same.
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Laskaris Evangelos Trifon ; Palmo Michael Anthony, Shielded and open superconductive magnet.
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Tamura, Hajime, Superconducting magnet and method for adjusting the same.
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Ito, Yoshitaka; Yanagi, Yousuke; Yoshikawa, Masaaki, Superconducting magnetic field generating device, superconducting magnetic field generating method, and nuclear magnetic resonance apparatus.
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Sivasubramaniam, Kiruba; Jansen, Patrick Lee; Stautner, Ernst Wolfgang, Superconducting magnetizer.
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Crozier Stuart,AUX ; Doddrell David Michael,AUX, Superconducting magnets.
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Yoshida, Naoji; Tanabe, Hajime; Kuroda, Shigenori, Superconductive magnet device.
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Yoshida, Naoji; Tanabe, Hajime; Kuroda, Shigenori, Superconductive magnet device.
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Yoshida, Naoji; Tanabe, Hajime; Kuroda, Shigenori, Superconductive magnet device.
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Overweg,Johannes Adrianus, Vertical field type MRI apparatus with a conical cavity situated in the main magnet.
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Katznelson Ehud,ILX ; Zuk Yuval,ILX, Yoked permanent magnet assemblies for use in medical applications.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Shielded and open MRI magnet 원문보기