[특허]MRI system with peripheral access and inhomogeneous field

[미국특허] MRI system with peripheral access and inhomogeneous field 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-050/55
출원번호	US-0884415 (1997-06-27)
발명자 / 주소	Rose Jr. Freeman H. Cornelius Wayne Crowley Christopher W.
출원인 / 주소	Panacea Medical Laboratories
대리인 / 주소	Nydegger & Associates
인용정보	피인용 횟수 : 10 인용 특허 : 27

초록 ▼

An MRI apparatus for imaging an object includes a base, a pair of magnets, and a transceiver unit. The magnets are mounted on the base with the North pole face of one magnet facing the South pole face of the other magnet. The North pole face and the South pole face are each substantially arcuate, and are positioned on the base to establish a magnetic field in a substantially U-shaped region between the North pole face and the South pole face. Importantly, imaging is performed in a nonhomogeneous portion of this magnetic field. This portion is characterized by substantially parallel surfaces having mutually different constant magnetic field magnitudes. Importantly, the space between the magnets at the top of the U-shaped region creates an access into the U-shaped region. To image an object, the object is placed through the access and into the portion of the magnetic field having surfaces of constant magnetic field magnitude. The transceiver unit is then used to selectively irradiate each surface in the magnetic field with electromagnetic radiation to image the object over each surface.

대표청구항 ▼

[ What is claimed is:] [1.] An MRI apparatus for imaging an object in a nonhomogeneous magnetic field which comprises:a base;a first magnet having an arcuate North pole face mounted on said base;a second magnet having an arcuate South pole face mounted on said base to establish a channel region between said North pole face of said first magnet and said South pole face of said second magnet and to create a nonhomogeneous magnetic field in said channel region, a portion of said magnetic field having contiguous surfaces, each said surface having a substantially constant magnetic field magnitude, with said surfaces having mutually different magnetic field magnitudes; anda transceiver unit for selectively irradiating one said surface in said magnetic field to image an object over said surface when said object is positioned in said channel region.

이 특허에 인용된 특허 (27) 인용/피인용 타임라인 분석

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King James D. (San Antonio TX), Apparatus providing enhanced detection of specimens in inhomogeneous fields.
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Kuhn Michael H. (Hamburg DEX), Coil system for volume-selective magnetic resonance spectroscopy.
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Brown, Robert J. S., Computer-controlled, portable pulsed NMR instrument and method of use wherein depolarization is ultrashortened using pseudo randomly spaced and oriented RF depolarization pulses.
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Gangarosa Raymond E. (Decatur GA) Chui K. Ming (Chagrin Falls OH), Horizontal field iron core magnetic resonance scanner.
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Grist Thomas M. (Madison WI) Alley Marcus T. (Madison WI), Local coil array for magnetic resonance imaging of the lower extremities.
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Enge Harald A. (25 Hillside Rd. Lincoln MA 01773), MRI mammography magnet.
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Hanley Peter (Forest of Dean GBX) McDougall Ian L. (Charlbury GBX), Magnetic assembly for a nuclear magnetic resonance imaging system.
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Dickinson Robert J. (Wealdstone GB2) Randell Christopher P. (Uxbridge GB2), Magnetic resonance apparatus.
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Mehlkopf Antoon F. (Eindhoven NLX) Ham Cornelis L. G. (Eindhoven NLX), Magnetic resonance apparatus with noise cancellation.
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Mori Issei (Tochigi JPX), Magnetic resonance imaging apparatus.
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Reynolds Francis D. (Port Jefferson Station NY) Baran Joseph S. (Holtsville NY) Bisey Robert P. (Seaford NY) Button Terry (East Patchogue NY) McGill Robert E. (Dix Hills NY) Nalven Nathan I. (Mount S, Magnetic resonance imaging foot coil assembly.
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Kikinis Dan (Saratoga CA), Magnetic resonance imaging system.
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Matsutani Kinya (Yokohama JPX), Magnetic resonance system.
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Bendel Peter (Rishon Le Zion ILX), Method to eliminate the effects of magnetic field inhomogeneities in NMR imaging and apparatus therefor.
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DeMeester Gordon D. (Wickliffe OH) Morich Michael A. (Mentor OH), Multiple driven C magnet.
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Dembinski Gerald T. (New Berlin WI), NMR local coil with adjustable spacing.
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Young, Ian R., Nuclear magnetic resonance systems.
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Abele Manlio G. (New York NY) Rusinek Henry (Great Neck NY) Jensen Jens (Harrison NY), Open permanent magnet structure for generating highly uniform field.
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Rapoport Uri (425 S. Harvey Oak Park IL 60302), Permanent magnet arrangement.
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Rapoport Uri (Oak Park IL) Panosh Richard (Lisle IL), Permanent magnet arrangement.
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Kurczewski Richard V. (Monroe CT), Quadrature coil construction.
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Ohkawa Tihiro (La Jolla CA), Quasi-open magnet configuration for use in magnetic resonance imaging.
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Feinberg David A. (Berkeley CA), Rapid magnetic resonance imaging using multiple phase encoded spin echoes in each of plural measurement cycles.
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Crowley Christopher W. (San Diego CA) Rose Freeman H. (Del Mar CA), Remotely positioned MRI system.
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Oppelt Ralph (Weiher DEX) Duerr Wilhelm (Erlangen DEX) Siebold Horst (Erlangen DEX), Surface resonator for a magnetic resonance imaging apparatus.
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McGill Robert E. (Dix Hills NY), Variable geometry MRI coil.
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이 특허를 인용한 특허 (10) 인용/피인용 타임라인 분석

Havens,Timothy John, Combined open and closed magnet configuration for MRI.
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Pedley, Douglas; Jackson, Steve; Churilla, J. Eric, Device, system, and method for scanning paper media.
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Mu, Mu; Chen, Wenzhi; Wang, Hai; Wang, Long, MRI guided ultrasound therapy apparatus.
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Aoki,Masaaki; Tsuzaki,Tsuyoshi, Magnetic field generating device for use in magnetic resonance imaging.
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Blank, Aharon; Alexandrowicz, Gil; Golan, Erez, Magnetic resonance imaging device.
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Golan, Erez, Magnetic resonance imaging device.
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Fuderer,Miha, Magnetic resonance method with non-linear magnetic field gradients.
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Pines, Alexander; Meriles, Carlos A.; Heise, Henrike; Sakellariou, Dimitrios; Moule, Adam, Method and apparatus for high resolution ex-situ NMR spectroscopy.
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Clarke,John; Kelso,Nathan; Lee,SeungKyun; Moessle,Michael; Myers,Whittier; McDermott,Robert; ten Haken,Bernard; Pines,Alexander; Trabesinger,Andreas, NMR and MRI apparatus and method.
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Pines,Alexander; Topgaard,Daniel; Sakellariou,Dimitrios; Martin,Rachel W.; Meriles,Carlos A., Nuclear magnetic resonance detection in inhomogeneous magnetic fields.
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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] MRI system with peripheral access and inhomogeneous field 원문보기