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51. 发明公开

EP1828796A1 A MAGNETIC RESONANCE IMAGING APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR COMPENSATION OF A FIELD DRIFT OF THE MAIN MAGNET 审中-公开
标题翻译： DEVICE FOR图片为补偿技术领域的磁共振和方法以及计算机程序的DRIFT主磁体
公开(公告)号：EP1828796A1
公开(公告)日：2007-09-05
申请号：EP05824550.7
申请日：2005-12-09
申请人： Koninklijke Philips Electronics N.V.
发明人： HAM, Cornelis, L., G.
IPC分类号： G01R33/3815 , G01R33/3873
CPC分类号： G01R33/3815 , G01R33/3873
摘要： In accordance with the technical measure of the invention in order to counteract the positive feedback between the superconducting magnet and the shim iron a pair of superconducting shunts (37, 38) is provided with a region of overlap (38a-37b) substantially matching the position of the shim iron (20) within the magnet system (40a). For the shim iron (20) being positioned below coil segments (31c, 31d) the region of overlap must include coil segments (31c, 31d). In this way a first superconducting shunt (37), having its connection points (37a, 37b), and the second superconducting shunt (38), having its connection points (38a, 38b), overlap in a region encompassing the coil segments (31c, 31d) and, thus the shim iron (20). The superconducting shunts (37, 38) are provided with operatable switches (not shown for clarity), which must be kept open during the ramp-up of the magnet. After the magnet has reached the persistent mode, the operatable switches must be kept closed for the whole operational time of the magnetic resonance imaging apparatus. Preferably, the operatable switches are implemented as per se known thermal switches connectable to a suitable heater.

52. 发明授权

EP1560035B1 Magnetic field generating assembly 有权
标题翻译：装置，用于产生一个磁场
公开(公告)号：EP1560035B1
公开(公告)日：2007-08-29
申请号：EP04256751.1
申请日：2004-11-02
申请人： Oxford Instruments Superconductivity Limited
发明人： Atrey, Milind Diwakar
IPC分类号： G01R33/3815
CPC分类号： F25D19/00 , F25B9/10 , F25B9/145 , F25D19/006 , G01R33/3815

53. 发明公开

EP1811314A1 Electromagnet apparatus 审中-公开
标题翻译： Elektromagnetvorrichtung
公开(公告)号：EP1811314A1
公开(公告)日：2007-07-25
申请号：EP07250183.6
申请日：2007-01-18
申请人： Hitachi, Ltd.
发明人： Aoki, Manabu, c/o Hitachi Ltd. , Abe, Mitsushi, c/o Hitachi Ltd. , Nakayama, Takeshi, c/o Hitachi Ltd. , Takahashi, Masanori, c/o Hitachi Ltd.
IPC分类号： G01R33/3873 , G01R33/3815
CPC分类号： G01R33/3873 , G01R33/3806 , G01R33/3815
摘要： The electromagnet apparatuses (1) generate a homogeneous magnetic field in a homogeneous magnetic field region (4) by a pair of superconductive main coils (6) for facing to each other; a pair of superconductive shielding coils (7) for facing to each other and passing a current in a direction reverse to that of the main coils ; and a pair of first ferromagnetic members (23) for facing to each other, and the apparatuses further include a pair of second ferromagnetic members (34) for facing to each other and be disposed in contact with or adjacent to an opposite side of the region side of the first ferromagnetic members, wherein the region is interposed between the main coils, between the shielding coils, between the first members whose outer periphery is a circle, and between the second members whose outer periphery is a circle whose diameter is larger than that of the circle of the first members.
摘要翻译：电磁装置（1）通过一对面对彼此的超导主线圈（6）在均匀的磁场区域（4）中产生均匀的磁场; 一对超导屏蔽线圈（7），用于彼此面对并使电流沿与主线圈相反的方向通过; 和一对彼此面对的第一铁磁构件（23），并且所述装置还包括一对第二铁磁构件（34），用于彼此面对并设置成与所述区域的相对侧接触或相邻所述第一铁磁部件的侧面设置在所述主线圈之间，所述屏蔽线圈之间，所述外周为圆的所述第一部件之间，所述第二部件的外周为直径大于的第一个成员的圈子。

54. 发明公开

EP1760480A1 NMR-Apparatur mit gemeinsam gekühltem Probenkopf und Kryobehälter 审中-公开
标题翻译： NMR-Apparatur mit gemeinsamgekühltemProbenkopf undKryobehälter
公开(公告)号：EP1760480A1
公开(公告)日：2007-03-07
申请号：EP06017951.2
申请日：2006-08-29
申请人： Bruker BioSpin AG
发明人： Bösel, Johannes , Glémot, Agnes , Eckert, Daniel , Baumann, Daniel Guy
IPC分类号： G01R33/3815 , G01R33/31
CPC分类号： F25D19/006 , F25B9/10 , F25B9/145 , F25B2309/1418 , F25B2400/17 , G01R33/31 , G01R33/3815
摘要： Eine NMR-Apparatur mit einem in einem ersten Kryobehälter (2) eines Kryostaten (9) angeordneten NMR-Magnetsystem und mit einem NMR-Probenkopf (1), wobei der erste Kryobehälter (2) in einem evakuierten Außenmantel eingebaut ist und von einem Strahlungsschild (24) und/oder einem weiteren Kryobehälter (3) umgeben ist, wobei zur Kühlung des NMR-Probenkopfs (1) und eines Kryobehälters (2, 3) eine Kühlvorrichtung vorgesehen ist, welche einen Kaltkopf (4, 4a, 4b, 4c) mit mehreren Kältestufen (12a, 12b, 12c, 18a, 18b, 18c, 19a) umfasst, wobei eine Kältestufe (12a, 12b, 12c, 18a, 18b, 18c, 19a) mit einer Wärme übertragenden Vorrichtung verbunden ist, und wobei ein Kühlkreislauf zwischen der Kühlvorrichtung und dem NMR-Probenkopf (1) vorgesehen ist, ist dadurch gekennzeichnet, dass die Kühlvorrichtung in einem separaten, evakuierten Gehäuse (6) angeordnet ist, welches unmittelbar oberhalb des Kryostaten (9) positioniert ist, wobei die Wärme übertragende Vorrichtung unmittelbar in Aufhängerohre (29a, 29c) des Kryobehälters (2, 3) eingeführt und/oder mit dem Strahlungsschild (24) kontaktiert ist. Hierdurch wird ein einfacher Aufbau realisiert und eine effiziente Kühlung einer NMR-Apparatur ermöglicht.
摘要翻译：冷却装置包括布置在低温恒温器（9）正上方的绝热壳体（6）。悬浮管道（29a，29c）中的传热装置直接插入低温容器（2,3）中，并接触辐射屏蔽。低温容器被封闭在低温恒温器的外壳中。在低温容器（2）中提供NMR磁体系统，其中布置有具有接收NMR信号的高频谐振器（16）和前置放大器（17）的NMR测试头（1）。冷却装置冷却NMR测试头和低温容器，并且包括由具有不同温度水平的不同冷却级（12a，18a，19a）的低温冷却器组成的冷头（4a）。至少一个冷却级连接到传热装置。热绝缘输送管线（7）和低温冷却器或泵的压缩机（5）包括在冷却装置和NMR测试头之间具有冷却载体的冷却回路。 NMR装置驱动方法也包括独立权利要求。

55. 发明公开

EP1744170A1 Low field loss cold mass structure for superconducting magnets 审中-公开
标题翻译： Kaltmassestruktur mit geringem Feldverlustfürsupraleitende Magneten
公开(公告)号：EP1744170A1
公开(公告)日：2007-01-17
申请号：EP06253559.6
申请日：2006-07-06
申请人： GENERAL ELECTRIC COMPANY
发明人： Laskaris, Evangelos Trifon , Thompson, Paul St. Mark Shadforth , Huang, Xianrui
IPC分类号： G01R33/3815
CPC分类号： H01F6/04 , G01R33/3815 , H01F5/04 , H01F6/00 , H01F27/22 , H01F27/2876
摘要： A structure (26) for superconducting magnets is provided. The structure (26) includes a thermally conductive electrically resistive composite bobbin (42), a superconducting coil (46) disposed around the thermally conductive electrically resistive composite bobbin (42) for conducting current in a superconductive state. The structure (26) also includes an electrically open cryogenic coil (48) disposed on the thermally conductive composite electrically resistive bobbin, which can receive a flow of cryogenic fluid to maintain the superconducting coil (46) in the superconductive state by transfer of heat from the superconducting coil (46) to the electrically open cryogenic coil (48) through the thermally conductive electrically resistive composite bobbin (42).
摘要翻译：提供了一种用于超导磁体的结构（26）。结构（26）包括导热电阻复合线轴（42），设置在导热电阻复合线轴（42）周围的超导线圈（46），用于在超导状态下传导电流。结构（26）还包括设置在导热复合电阻筒管上的电开式低温线圈（48），其可以接收低温流体的流动，以通过将热量传递到超导状态来将超导线圈（46）保持在超导状态超导线圈（46）通过导热电阻复合线轴（42）连接到电开式低温线圈（48）。

56. 发明公开

EP1214906A4 OPEN-TYPE MAGNET DEVICE FOR MRI 审中-公开
标题翻译： OFFENER MAGNETFÜRMRI
公开(公告)号：EP1214906A4
公开(公告)日：2006-02-22
申请号：EP00960998
申请日：2000-09-13
申请人： HITACHI MEDICAL CORP , MITSUBISHI ELECTRIC CORP
发明人： TAKESHIMA HIROTAKA , HONMEI TAKAO , TAZAKI HIROSHI , MORITSU KAZUKI , KURODA SHIGENORI , TANABE HAJIME
IPC分类号： G01R33/3873 , A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/3875 , H01F6/00
CPC分类号： G01R33/3873 , G01R33/3806
摘要： An open-type magnet device for MRI includes a pair of upper and lower magnet assemblies, and shims are provided on opposite sides of their cooling containers and/or in holes passing through central portions of the cooling containers so as to facilitate providing an intense static magnetic field.
摘要翻译：用于MRI的开放型磁体装置包括一对上下磁体组件，并且垫片设置在其冷却容器的相对侧和/或穿过冷却容器的中心部分的孔中，以便于提供高度均匀的静磁场。

57. 发明公开

EP1340456A4 LOW-LEAKAGE MAGNETIC-FIELD MAGNET AND SHIELD COIL ASSEMBLY 审中-公开
标题翻译：随磁场和低漏磁和屏蔽线圈配置
公开(公告)号：EP1340456A4
公开(公告)日：2005-11-09
申请号：EP01271111
申请日：2001-12-04
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： KAKUGAWA SHIGERU , AZUMA KATSUNORI , WAKUDA TSUYOSHI , WADAYAMA YOSHIHIDE , TAKESHIMA HIROTAKA , SAKAKIBARA KENJI , YATSUO TAKESHI , HONMEI TAKAO
IPC分类号： G01R33/38 , G01R33/3815 , G01R33/421 , A61B5/055
CPC分类号： G01R33/421 , G01R33/3806 , G01R33/3815
摘要： A magnet device provided with a shield current carrying means in which two sets of magneto static field generating sources for generating magnetic fields directed toward a first direction are disposed facing each other across a finite region and at least one set of the magnetostatic field generating sources are disposed on at least two almost concentric circles, wherein, on a first plane including a first axis, a second axis and a first point, the first point being a point of intersection between the first axis parallel to the first direction and passing the almost center of the shied current carrying means and the second axis crossing at right angles the first axis and spaced an almost equal distance from the two sets of the generating sources, positive and negative current carrying directions of one set out of two sets of magnetostatic field generating sources or those in respective sets are arranged alternately, when an angle formed by a half line at the n-th point position from the first point to extend toward the geometric center of a section of the shield current carrying means and the first axis is theta n, and the current carrying directions of the shield current carrying means are set in the order of increasing theta n.

58. 发明授权

EP0964263B1 Open supercondutive magnet having shielding 有权
标题翻译：开放超导磁体与屏蔽
公开(公告)号：EP0964263B1
公开(公告)日：2005-08-31
申请号：EP99301157.6
申请日：1999-02-17
申请人： GENERAL ELECTRIC COMPANY
发明人： Laskaris, Evangelos Trifon , Palmo, Michael Anthony Jr. , Xu, Bu-Xin
IPC分类号： G01R33/3815 , G01R33/421 , G01R33/38
CPC分类号： G01R33/421 , G01R33/3806 , G01R33/3815

59. 发明公开

EP1460444A3 Pulse tube cryocooler system for magnetic resonance superconducting magnets 有权
标题翻译： Pulsrohr-Tieftemperaturkühlsystemfürsupraleitende Magnetefürdie magnetische Resonanz
公开(公告)号：EP1460444A3
公开(公告)日：2005-05-25
申请号：EP04251588.2
申请日：2004-03-19
申请人： GE Medical Systems Global Technology Company LLC
发明人： Lehmann, Greogory A. , Ginfrida, Clifford J. , Mangano, Roy A. , Mcguinness, Kathleen W.
IPC分类号： G01R33/3815 , F25B9/14
CPC分类号： F25D19/006 , F25B9/10 , F25B9/145 , F25B2400/17 , G01R33/3815
摘要： A magnetic resonance assembly (20) comprising, a liquid cryogen vessel (24), a liquid cryogen cooled superconducting magnet (22) disposed within the liquid cryogen vessel (24), a closed vacuum vessel (28) surrounding the liquid cryogen vessel (24) and spaced from the liquid cryogen vessel (24), a cooling device (30) fixably attached to the vacuum vessel (28) operable for providing cryogenic temperatures to the superconducting magnet (22), a heat exchanger device (34) in thermal contact with the liquid cryogen vessel (24) operable for heat exchange, and a bus bar (32) in thermal contact with the cooling device (30) and the heat exchanger device (34). The cooling device (30) may be a pulse tube cryocooler capable of providing temperatures of about 4 deg K. A thermal bus bar (32) of high purity aluminum or copper is used to connect and provide a spatial separation of a pulse tube cryocooler (30) and a remote recondensor unit (34), thus reducing the overall height of the magnet assembly (20).
摘要翻译：一种磁共振组件（20），包括液体冷冻剂容器（24），设置在所述液体冷冻剂容器（24）内的液体冷冻冷却超导磁体（22），围绕所述液体冷冻剂容器（24）的封闭真空容器）并与液体冷冻剂容器（24）间隔开;可固定地附接到真空容器（28）的冷却装置（30），其可操作用于向超导磁体（22）提供低温温度;热接触的热交换器装置可操作用于热交换的液体冷冻剂容器（24）和与冷却装置（30）和热交换器装置（34）热接触的汇流条（32）。冷却装置（30）可以是能够提供约4度K的温度的脉冲管低温冷却器。使用高纯度铝或铜的热母线（32）来连接和提供脉冲管低温冷却器的空间分离 30）和远程再感应单元（34），从而降低磁体组件（20）的整体高度。

60. 发明公开

EP1530058A2 Superconducting magnetic resonance imaging apparatus with reduced vibrations 审中-公开
标题翻译：具有降低振动的磁共振成像的超导器件
公开(公告)号：EP1530058A2
公开(公告)日：2005-05-11
申请号：EP04025656.2
申请日：2004-10-28
申请人： Hitachi, Ltd.
发明人： Motoshiromizu, Hirofumi , Suzuki, Kunihito , Watanabe, Hiroyuki
IPC分类号： G01R33/3815 , G01R33/385
CPC分类号： G01R33/3815 , G01R33/3854
摘要： The MRI apparatus has ring-shaped superconducting coils (2a, 2b) arranged to vertically oppose each other. The superconducting coils are installed in ring-shaped cooling containers (5a, 5b). The cooling containers are accommodated in radiation shield plates (7a, 7b). The radiation shield plates are accommodated in vacuum vessels (3a, 3b). The cooling containers are connected together at at least two locations. Support members (9) are arranged between an outer wall surface of the lower cooling container and an inner wall surface of the lower vacuum vessel to support the lower cooling container on the lower vacuum vessel. The upper cooling container is free, supported only by the connecting tubes connecting the upper and lower cooling containers.
摘要翻译： MRI装置具有环形超导线圈（2A，2B）垂直布置反对海誓山盟。超导线圈被安装在环状的冷却容器（5A，5B）。该冷却容器被容纳在辐射屏蔽板（7A，7B）。辐射屏蔽板被容纳在真空容器（3A，3B）。该冷却容器在至少两个位置处连接在一起。支撑构件（9）在下部冷却容器的外壁表面和在下部真空容器的内壁面之间布置成支撑在下部真空容器下部冷却容器。上冷却容器是免费的，仅通过连接上部和下部冷却容器连接管支撑。

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