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公开(公告)号：US07271689B1
公开(公告)日：2007-09-18
申请号：US11091730
申请日：2005-03-28
IPC分类号： H01F1/00
CPC分类号： H01F7/0278
摘要： A magnet structure produces a field within a magnet gap. The field is provided at least in part by a pair of permanent magnets that are fixed in place by a frame. The frame fixes a magnet assembly that is adapted to hold the magnetic material composing the permanent magnets, such that the quantity of the magnetic material can be adjusted to suit the particular application. The magnetic material can be provided in the form of discrete magnetic elements, such as magnetic “bricks”. The frame also functions as the flux collector and return. Accordingly, the general geometry of the magnet structure is fixed, and the amount of magnetic material, and therefore the magnetic field strength, is adjustable.
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公开(公告)号：US07573432B1
公开(公告)日：2009-08-11
申请号：US11473765
申请日：2006-06-23
CPC分类号： G01R33/3415 , G01R33/341 , G01R33/3678
摘要： In one example, an antenna is disclosed comprising a first, outer conductor, at least one inner conductor within the first outer conductor, and a second outer conductor surrounding the first outer conductor. The second outer conductor may define a plurality of holes therethrough. The at least one inner conductor may comprise a plurality of inner conductors. At least two of the plurality of inner conductors may be connected to each other in series, across a capacitor. At least two of the plurality of inner conductors may be connected to each other in parallel, across a capacitor. The at least one inner conductor may be sufficiently surrounded by the first outer conductor to shield the inner conductor from receiving a radiofrequency signal.
摘要翻译： 在一个示例中，公开了一种天线，其包括第一外部导体，第一外部导体内的至少一个内部导体和围绕第一外部导体的第二外部导体。 第二外部导体可以限定穿过其中的多个孔。 至少一个内部导体可以包括多个内部导体。 多个内部导体中的至少两个可以跨过电容器彼此串联连接。 多个内部导体中的至少两个可以跨过电容器并联连接。 至少一个内部导体可以被第一外部导体充分地围绕，以屏蔽内部导体以接收射频信号。
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公开(公告)号：US07248137B1
公开(公告)日：2007-07-24
申请号：US11093737
申请日：2005-03-29
IPC分类号： H01F1/00
CPC分类号： G01R33/3806 , G01R33/3802 , G01R33/383 , H01F7/0278
摘要： A magnet structure produces a field within a magnet gap. The field is provided at least in part by a pair of permanent magnets that are fixed in place by a frame. The frame fixes a magnet assembly that is adapted to hold the magnetic material composing the permanent magnets, such that the quantity of the magnetic material can be adjusted to suit the particular application. The magnetic material can be provided in the form of discrete magnetic elements, such as magnetic “bricks”. The frame also functions as the flux collector and return. Accordingly, the general geometry of the magnet structure is fixed, and the amount of magnetic material, and therefore the magnetic field strength, is adjustable.
摘要翻译： 磁体结构产生磁隙内的磁场。 至少部分地由一对固定在框架上的永磁体提供该磁场。 框架固定一个适于保持构成永磁体的磁性材料的磁体组件，使得可以调节磁性材料的量以适应特定应用。 磁性材料可以以诸如磁性“砖”的离散磁性元件的形式提供。 该框架还用作通量收集器并返回。 因此，磁体结构的一般几何形状是固定的，并且磁性材料的量以及因此的磁场强度是可调节的。
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公开(公告)号：US07116197B1
公开(公告)日：2006-10-03
申请号：US10834771
申请日：2004-04-29
IPC分类号： H01F7/00
CPC分类号： H01F7/0284 , G01R33/383 , H01F7/021
摘要： A magnet structure produces a field within a magnet gap. The field is provided at least in part by a pair of permanent magnets that are fixed in place by a frame. The frame fixes a magnet assembly that is adapted to hold the magnetic material composing the permanent magnets, such that the quantity of the magnetic material can be adjusted to suit the particular application. The magnetic material can be provided in the form of discrete magnetic elements, such as magnetic “bricks”. The frame also functions as the flux collector and return. Accordingly, the general geometry of the magnet structure is fixed, and the amount of magnetic material, and therefore the magnetic field strength, is adjustable.
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公开(公告)号：US20080036463A1
公开(公告)日：2008-02-14
申请号：US11504246
申请日：2006-08-14
申请人： Hank Hsieh , Gordon Danby , Raymond Damadian , John Jackson , Hugh Wahl , Cristian Balica
发明人： Hank Hsieh , Gordon Danby , Raymond Damadian , John Jackson , Hugh Wahl , Cristian Balica
IPC分类号： G01V3/00
CPC分类号： G01R33/3815 , G01R33/3806 , Y10T29/4902
摘要： A magnetic resonance imaging magnet includes a ferromagnetic frame. A pair of generally toroidal superconducting coil units overlie interfaces of side walls incorporated in the frame. Each coil unit may include a vessel having hollow support extensions extending into recesses in the side walls. The coil units may further include elongated, low-thermal conductance supports disposed within the support extensions. The frame may include pole stems projecting inwardly from the side walls, and the coils may be disposed in close proximity to the pole stems. Cryocoolers may be mounted to the frame so that the cryocoolers are substantially mechanically isolated from the coils of the coil units, but are in thermal communication therewith. The cryocooler mountings may be arranged for convenient servicing and installation of the cryocoolers.
摘要翻译： 磁共振成像磁体包括铁磁框架。 一对通常为环形的超导线圈单元覆盖在框架中的侧壁的界面上。 每个线圈单元可以包括具有延伸到侧壁中的凹部中的中空支撑延伸部的容器。 线圈单元还可以包括设置在支撑延伸部内的细长的低热传导支撑。 框架可以包括从侧壁向内突出的杆杆，并且线圈可以设置在极杆附近。 低温冷却器可以安装到框架上，使得低温冷却器基本上与线圈单元的线圈机械隔离，但与其进行热连通。 低温冷却器安装件可以布置成方便维修和安装低温冷却器。
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公开(公告)号：US20060197530A1
公开(公告)日：2006-09-07
申请号：US11236184
申请日：2005-09-27
申请人： Raymond Damadian , William Wahl , Hank Hsieh , Gordon Danby , John Jackson , Jevan Damadian , Luciano Bonanni , Mark Gelbien , Keith Saboe
发明人： Raymond Damadian , William Wahl , Hank Hsieh , Gordon Danby , John Jackson , Jevan Damadian , Luciano Bonanni , Mark Gelbien , Keith Saboe
IPC分类号： G01V3/00
CPC分类号： G01R33/3806 , A61B5/0555 , G01R33/3815
摘要： In one aspect, a magnet comprising a pair of pole supports spaced apart from one another and extending in a generally horizontal direction. The magnet includes a pair of flux return members extending between the pole supports so as to define a frame, each of the flux return members including a first columnar section that extends parallel to the polar axis and a second columnar section that extends perpendicular to the polar axis and projects towards the pole. In another aspect, a magnetic resonance imaging system comprises a ferromagnetic frame that is operative to support an upper pole member and a lower pole member along a vertical polar axis such that a gap is defined between the upper and lower pole members and an access floor that is isolated from the ferromagnetic frame and pole members for providing access to the gap.
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公开(公告)号：US06982620B1
公开(公告)日：2006-01-03
申请号：US09998907
申请日：2001-11-23
IPC分类号： H01F5/00
CPC分类号： H01F7/0284 , G01R33/383 , H01F7/021
摘要： A magnet structure produces a field within a magnet gap. The field is provided at least in part by a pair of permanent magnets that are fixed in place by a frame. The frame fixes a magnet assembly that is adapted to hold the magnetic material composing the permanent magnets, such that the quantity of the magnetic material can be adjusted to suit the particular application. The magnetic material can be provided in the form of discrete magnetic elements, such as magnetic “bricks”. The frame also functions as the flux collector and return. Accordingly, the general geometry of the magnet structure is fixed, and the amount of magnetic material, and therefore the magnetic field strength, is adjustable.
摘要翻译： 磁体结构产生磁隙内的磁场。 至少部分地由一对固定在框架上的永磁体提供该磁场。 框架固定一个适于保持构成永磁体的磁性材料的磁体组件，使得可以调节磁性材料的量以适应特定应用。 磁性材料可以以诸如磁性“砖”的离散磁性元件的形式提供。 该框架还用作通量收集器并返回。 因此，磁体结构的一般几何形状是固定的，并且磁性材料的量以及因此的磁场强度是可调节的。
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公开(公告)号：US06970061B1
公开(公告)日：2005-11-29
申请号：US10835578
申请日：2004-04-29
IPC分类号： G01R33/383 , H01F1/00 , H01F7/02
CPC分类号： H01F7/0278 , G01R33/383
摘要： A magnet structure produces a field within a magnet gap. The field is provided at least in part by a pair of permanent magnets that are fixed in place by a frame. The frame fixes a magnet assembly that is adapted to hold the magnetic material composing the permanent magnets, such that the quantity of the magnetic material can be adjusted to suit the particular application. The magnetic material can be provided in the form of discrete magnetic elements, such as magnetic “bricks”. The frame also functions as the flux collector and return. Accordingly, the general geometry of the magnet structure is fixed, and the amount of magnetic material, and therefore the magnetic field strength, is adjustable.
摘要翻译： 磁体结构产生磁隙内的磁场。 至少部分地由一对固定在框架上的永磁体提供该磁场。 框架固定一个适于保持构成永磁体的磁性材料的磁体组件，使得可以调节磁性材料的量以适应特定应用。 磁性材料可以以诸如磁性“砖”的离散磁性元件的形式提供。 该框架还用作通量收集器并返回。 因此，磁体结构的一般几何形状是固定的，并且磁性材料的量以及因此的磁场强度是可调节的。
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公开(公告)号：US20050248347A1
公开(公告)日：2005-11-10
申请号：US10999667
申请日：2004-11-30
申请人： Raymond Damadian
发明人： Raymond Damadian
CPC分类号： G01R33/381 , G01R33/3815
摘要： Apparatus and method for magnetic resonance imaging. In an aspect, the present invention is an apparatus for magnetic resonance imaging that includes a short bore magnet that is oriented such that, when energized, a static magnetic field is created in a substantially vertical direction. In another aspect, the present invention is a method for performing magnetic resonance imaging using a short bore magnet that is oriented such that, when energized, a static magnetic field is created in a substantially vertical direction.
摘要翻译： 用于磁共振成像的装置和方法。 一方面，本发明是一种用于磁共振成像的装置，其包括短孔磁体，其被定向成使得当被激励时，在基本上垂直的方向上产生静态磁场。 在另一方面，本发明是一种使用短孔磁体进行磁共振成像的方法，所述短孔磁体被定向为使得当被激励时，在基本垂直的方向上产生静磁场。
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