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公开(公告)号：US06492814B1
公开(公告)日：2002-12-10
申请号：US09683404
申请日：2001-12-21
IPC分类号： G01V300
CPC分类号： G01R33/341
摘要： A self-localizing receive coil system for use with a Magnetic Resonance Imaging (MRI) system comprises at least one surface coil assembly for placement adjacent to a region of interest to be imaged and a plurality of tracking devices attached to the surface coil assembly for use in indicating location and orientation of the surface coil assembly during imaging.
摘要翻译： 用于与磁共振成像（MRI）系统一起使用的自定位接收线圈系统包括至少一个表面线圈组件，用于邻近要成像的感兴趣区域放置，以及附接到表面线圈组件以用于的多个跟踪装置 在成像期间指示表面线圈组件的位置和取向。
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2.发明授权System to monitor temperature near an invasive device during magnetic resonance procedures 失效在磁共振程序期间监测侵入性装置附近的温度的系统
公开(公告)号：US5730134A
公开(公告)日：1998-03-24
申请号：US714840
申请日：1996-09-09
CPC分类号： A61B5/01 , A61B5/055 , G01R33/287 , G01R33/4804
摘要： A temperature monitoring system employs a temperature detection means incorporated into an invasive device intended to be placed within a body during a magnetic resonance procedure. The temperature monitoring system is used to monitor temperature rises in tissue arising from the creation of electric fields within the tissue. These electric fields are created by the application of RF pulses during the course of a magnetic resonance procedure which induce electrical current in the invasive device. It the detected temperature rise exceeds a selected threshold, the temperature monitoring system can cause the magnetic resonance imaging system to either reduce RF power or terminate the procedure. An optical coupling may be used between the imaging or tracking RF coil and the MR receiver to eliminate heating induced by the application of RF pulses during the procedure.
摘要翻译： 温度监测系统采用将温度检测装置并入到旨在在磁共振程序期间放置在体内的侵入性装置中。 温度监测系统用于监测组织内产生的电场产生的组织温度升高。 这些电场是通过在磁共振过程中施加RF脉冲而产生的，其在侵入性装置中引起电流。 检测到的温度上升超过选定的阈值，温度监测系统可以使磁共振成像系统降低RF功率或终止程序。 可以在成像或跟踪RF线圈和MR接收器之间使用光耦合器来消除在该过程期间由RF脉冲施加引起的加热。
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3.发明授权RF coil for reduced electric field exposure for use in very high field magnetic resonance imaging 有权用于减小电场暴露的RF线圈，用于非常高的场磁共振成像公开(公告)号：US06538441B1
公开(公告)日：2003-03-25
申请号：US09682741
申请日：2001-10-12
IPC分类号： G01V300
CPC分类号： G01R33/34046
摘要： A radio frequency (RF) coil assembly for a very high field Magnetic Resonance Imaging (MRI) system is provided. The RF coil assembly comprises a plurality of conductors arranged cylindrically and disposed about a patient bore tube of the MRI system. Each of the conductors is configured for the RF coil assembly to resonate at substantially high frequencies. Further, the RF coil assembly comprises a plurality of capacitive elements disposed between and connecting respective ends of the conductors and further disposed in a spaced-apart relationship with the patient bore tube. The capacitive elements are for electrically interconnecting the plurality of conductors at the respective ends of the conductors.
摘要翻译： 提供了用于非常高场磁共振成像（MRI）系统的射频（RF）线圈组件。 RF线圈组件包括多个导体，其布置成圆柱形并围绕MRI系统的患者孔管设置。 每个导体被配置为用于RF线圈组件以基本上高的频率谐振。 此外，RF线圈组件包括多个电容元件，其设置在导体的相应端之间并连接到导体的相应端部，并且还与患者孔管以间隔开的关系设置。 电容元件用于在导体的相应端部处电连接多个导体。
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公开(公告)号：US06437567B1
公开(公告)日：2002-08-20
申请号：US09455430
申请日：1999-12-06
申请人： John Frederick Schenck , Ronald Dean Watkins , William Alan Edelstein , Sayed-Amr El-Hamamsy , Eddy B. Boskamp , Randy Otto John Giaquinto , John Andrew Mallick
发明人： John Frederick Schenck , Ronald Dean Watkins , William Alan Edelstein , Sayed-Amr El-Hamamsy , Eddy B. Boskamp , Randy Otto John Giaquinto , John Andrew Mallick
IPC分类号： G01V300
CPC分类号： G01R33/3415 , G01R33/34061 , G01R33/3806
摘要： A quadrature coil suitable for use with an open frame MRI system provides crossing pairs of arrays of parallel conductor elements, respectively. Compact configuration is provided through use of an isolating circuit for incorporating parasitic capacitances at the resonance frequency of the coil into a blocking parallel resonance. Termination of the parallel conductor elements may be accomplished by equal impedance node connectors formed from branching pairs of conductors or a triangular least resistance connection form. RF shields are provided by pairs of conductive sheets containing eddy current reducing slots aligned with the parallel conductors elements of the coil.
摘要翻译： 适用于开放式框架MRI系统的正交线圈分别提供平行导体元件的交叉对阵列。 通过使用用于将线圈的谐振频率处的寄生电容并入阻塞并联谐振的隔离电路来提供紧凑配置。 平行导体元件的端接可以通过由分支对导体或三角形最小电阻连接形式形成的等阻抗节点连接器来实现。 RF屏蔽件由包含与线圈的平行导体元件对准的涡流减小槽的导电片构成。
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公开(公告)号：US06175757B1
公开(公告)日：2001-01-16
申请号：US09017573
申请日：1998-02-02
IPC分类号： A61B812
CPC分类号： A61B8/12 , A61B5/055 , A61B5/06 , A61B5/062 , A61B8/4245 , A61B8/4461 , Y10S128/916
摘要： An invasive probe for mapping the walls of a lumen employs a real-time tracking means and a wall distance measurement means. As the probe is advanced within the lumen, the real-time tracking means provides three-dimensional coordinates of the probe's position and orientation. Concurrent with probe localization, the distance between the probe and the lumen walls is measured. Both the probe position and the wall distance measurement are sent to a data acquisition system which in turn provides a graphic or numeric display to the operator. Probe tracking can be performed with radio-frequency, magnetic resonance, ultrasonic techniques or the like. If desired, lumen wall distance measurements can be performed with magnetic resonance or ultrasound methods. Lumen wall distance measurements can also be performed with mechanical devices such as balloons and/or expanding structures.
摘要翻译： 用于映射管腔壁的入侵探针采用实时跟踪装置和壁距测量装置。 当探头在管腔内前进时，实时跟踪装置提供探头位置和方位的三维坐标。 与探头定位同时测量探头与腔壁之间的距离。 探头位置和墙壁距离测量都发送到数据采集系统，该系统又向操作员提供图形或数字显示。 可以使用射频，磁共振，超声波技术等进行探测跟踪。 如果需要，可以用磁共振或超声波方法进行管腔壁距离测量。 腔壁距离测量也可以用诸如球囊和/或膨胀结构的机械装置进行。
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公开(公告)号：US5711300A
公开(公告)日：1998-01-27
申请号：US515876
申请日：1995-08-16
申请人： Erika Schneider , Harvey Ellis Cline , Ronald Dean Watkins , Sheila Srinivasan Washburn , Christopher Judson Hardy
发明人： Erika Schneider , Harvey Ellis Cline , Ronald Dean Watkins , Sheila Srinivasan Washburn , Christopher Judson Hardy
CPC分类号： G01R33/4804
摘要： NMR images indicative of thermal changes in tissues undergoing therapy are produced using a gradient-recalled double-echo pulse sequence. A reference phase image is produced using a short echo time (TE.sub.1) and a measurement phase image is produced with a longer echo time (TE.sub.2). Temperature maps are produced during therapy using the phase difference information at corresponding pixels of the two phase images.
摘要翻译： 使用梯度回忆的双回波脉冲序列产生指示正在接受治疗的组织中热变化的NMR图像。 使用短回波时间（TE1）产生参考相位图像，并且以更长的回波时间（TE2）产生测量相位图像。 使用两相图像的相应像素处的相位差信息在治疗期间产生温度图。
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公开(公告)号：US07439741B2
公开(公告)日：2008-10-21
申请号：US11603556
申请日：2006-11-22
IPC分类号： G01V3/00
CPC分类号： G01R33/3856 , G01R33/3804
摘要： In one aspect, a magnetic resonance imaging (MRI) device includes a non-magnetic, thermally conductive spreader substrate having a broken metal layer coupled to a thermally conductive, electrically non-conductive layer, wherein the broken metal layer is configured to exchange heat with at least one serpentine cooling tube.
摘要翻译： 在一个方面，磁共振成像（MRI）装置包括具有与导热的非导电层耦合的断裂的金属层的非磁性导热扩散器基底，其中所述断裂的金属层被配置为与 至少一个蛇形冷却管。
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8.发明授权公开(公告)号：US07167000B2
公开(公告)日：2007-01-23
申请号：US11023140
申请日：2004-12-22
申请人： Kathleen Melanie Amm , Ronald Dean Watkins , William Daniel Barber , Christopher Judson Hardy , Kenneth William Rohling
发明人： Kathleen Melanie Amm , Ronald Dean Watkins , William Daniel Barber , Christopher Judson Hardy , Kenneth William Rohling
IPC分类号： G01V3/00
CPC分类号： G01R33/3415 , G01R33/34007 , G01R33/34023 , G01R33/341
摘要： A cryogenically cooled radiofrequency (RF) coil structure for use in Magnetic Resonance Imaging (MRI) and method for cryogenically cooling RF coils are provided. The cryogenically cooled RF coil structure comprises a sealed structure constructed of non-conducting material and adapted for containing a cooling substance and at least one RF coil disposed integrally in contact with the sealed structure such that sealed structure and integrally disposed RF coil are disposed about an object to be imaged.
摘要翻译： 提供了用于磁共振成像（MRI）的低温冷却射频（RF）线圈结构和用于低温冷却RF线圈的方法。 低温冷却的RF线圈结构包括由非导电材料构成并适于容纳冷却物质的密封结构和与密封结构一体地设置的至少一个RF线圈，使得密封结构和整体设置的RF线圈围绕 要成像的对象。
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公开(公告)号：US07046005B2
公开(公告)日：2006-05-16
申请号：US10742982
申请日：2003-12-22
IPC分类号： G01V3/00
CPC分类号： G01R33/3657 , G01R33/3692
摘要： A control system comprising a driver circuit for magnetic systems is provided. The driver circuit is coupled to a magnetic system and is configured for isolating control signals from electromagnetic interference. The control signals are configured for controlling a plurality of switching elements in the magnetic system. The driver circuit and the magnetic system are located in shielded environment.
摘要翻译： 提供一种包括用于磁性系统的驱动电路的控制系统。 驱动器电路耦合到磁系统并且被配置用于将控制信号与电磁干扰隔离。 控制信号被配置用于控制磁系统中的多个开关元件。 驱动电路和磁性系统位于屏蔽环境中。
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公开(公告)号：US06933724B2
公开(公告)日：2005-08-23
申请号：US10719118
申请日：2003-11-21
IPC分类号： G01R33/38 , G01R33/385 , G01R33/3875 , G01V3/00
CPC分类号： G01R33/381 , G01R33/385 , G01R33/3875
摘要： A matrix coil for generating a variable magnetic field is provided, including a plurality of loops arranged in a series so as to have a substantially common axis and segmented into at least one arc-shaped segment, a variable current source for each of the arc-shaped segments, and a controller. The controller is configured to selectively vary an amount of current provided to each of the arc-shaped segments by the variable current sources so as to achieve a variable base field, one or more variable gradient fields, and one or more variable second order shim fields.
摘要翻译： 提供了一种用于产生可变磁场的矩阵线圈，包括以串联布置的多个环，以便具有基本共同的轴线并分成至少一个弧形段，用于每个弧形区段的可变电流源， 形状的片段和控制器。 控制器被配置为选择性地改变由可变电流源提供给每个弧形段的电流量，以便实现可变基场，一个或多个可变梯度场，以及一个或多个可变二阶垫片场 。
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