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公开(公告)号：US06396271B1
公开(公告)日：2002-05-28
申请号：US09397826
申请日：1999-09-17
申请人： Michael Burl , Robert C. Gauss
发明人： Michael Burl , Robert C. Gauss
IPC分类号： G01V300
CPC分类号： G01R33/34046
摘要： A tunable radio frequency birdcage coil (26, 34) has an improved tuning range for use with a magnetic resonance apparatus. The coil includes a pair of end ring conductors (60, 62) which are connected by a plurality of spaced leg conductors (L2, L4, . . ., L26) to form a generally cylindrical volume. Both the end rings and the leg conductors contain reactive elements, preferably capacitors (C2, C4, . . ., C124). The radio frequency coil also includes a pair of tuning rings (100, 120) for tuning the reactive elements (C2, C4, . . ., C124), which each include a non-conductive support cylinder (110, 130) and a plurality of tuning bands (120, 122, . . ., 142 and 150, 152, . . ., 172) which extend axially along the outer surface of the support cylinder (110, 130). The tuning rings (100, 120) are rotated or translated with respect to the leg conductors (L2, L4, . . ., L26) in order to vary capacitance and inductance of the coil (26, 34) to tune the (26, 34) coil to the desired resonant frequency.
摘要翻译： 可调谐射频鸟笼线圈（26,34）具有与磁共振装置一起使用的改进的调谐范围。 线圈包括一对端环导体（60,62），其通过多个间隔的腿导体（L2，L4 ... L26）连接，以形成大致圆柱形的体积。 端环和腿导体都包含电抗元件，优选电容器（C2，C4，...，C124）。 射频线圈还包括一对用于调谐无功元件（C2，C4，...，C124）的调谐环（100,120），每个调谐环各自包括非导电支撑圆柱体（110,130）和多个 的调节带（120,122，...，142和150,152，...，172），其沿着支撑筒（110,130）的外表面轴向延伸。 调谐环（100,120）相对于腿部导体（L2，L4，...，L26）旋转或平移，以便改变线圈（26,34）的电容和电感，以调谐（26， 34）线圈到所需的谐振频率。
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公开(公告)号：US5323776A
公开(公告)日：1994-06-28
申请号：US961150
申请日：1992-10-15
IPC分类号： A61B5/024 , G01R33/465 , A61B5/0245 , A61B5/055
CPC分类号： G01R33/465 , A61B5/02416 , Y10S128/901
摘要： Magnetic resonance imaging hardware (A) defines a patient receiving region (20) that is surrounded by a bore liner (22). A socket (50) is mounted in the bore liner with an appropriate receptacle for receiving a standard plug (52) of a conventional pulse oximetry system. Conventional pulse oximetry systems include a sensor unit (54) connected with a cable (56) having the plug (52) at one end thereof. A notch filter (62) attenuates currents near the resonance frequency of the imager. A preamplifier (60) amplifies signals from the sensor unit. Within the shielding (66) of the preamplifier, a low pass filter (68) is provided to remove induced radio frequency components from the preamplified sensor unit signal. A radio frequency filter (70) mounted at the shield of the shielded room (B) prevents radio frequency signals from reaching an exterior processing and display unit (E) and prevents radio frequency signals from a clock (72) of the processing and display unit from being conveyed into the shielded room (B). The processing and display unit processes the signal received from the preamplifier to generate a pulse rate display (78) and a blood oxygen concentration display (80).
摘要翻译： 磁共振成像硬件（A）限定由孔衬套（22）包围的患者接收区域（20）。 插座（50）用适当的插座安装在孔衬里中，用于接收常规脉搏血氧仪系统的标准插头（52）。 传统的脉搏血氧饱和度测量系统包括与其一端具有插头（52）的电缆（56）连接的传感器单元（54）。 陷波滤波器（62）衰减成像器谐振频率附近的电流。 前置放大器（60）放大来自传感器单元的信号。 在前置放大器的屏蔽（66）内，提供了一个低通滤波器（68），以从前置放大的传感器单元信号中去除感应射频分量。 安装在屏蔽室（B）的屏蔽处的射频滤波器（70）防止射频信号到达外部处理和显示单元（E），并防止来自处理和显示单元的时钟（72）的射频信号 从被传送到屏蔽室（B）。 处理和显示单元处理从前置放大器接收的信号以产生脉搏率显示（78）和血氧浓度显示（80）。
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公开(公告)号：US4439733A
公开(公告)日：1984-03-27
申请号：US340134
申请日：1982-01-18
申请人： Waldo S. Hinshaw , Robert C. Gauss
发明人： Waldo S. Hinshaw , Robert C. Gauss
IPC分类号： A61B10/00 , A61B5/055 , G01N24/08 , G01N33/36 , G01R33/34 , G01R33/345 , G01R33/36 , H01F5/00 , G01R33/08
CPC分类号： G01R33/34076 , G01N24/08 , G01N33/36 , H01F5/00 , G01R33/345 , G01R33/3628
摘要： Apparatus for generating and detecting magnetic field components oscillating at a radio frequency in a direction transverse to a static magnetic field in a nuclear-magnetic-resonance (NMR) system. The apparatus has a plurality of conductive elements spaced from one another and from the axis along which the static magnetic field is directed. The relative amplitudes of alternating currents in the conductive elements are controlled to generate a spatially uniform field. A preferred embodiment uses a standing wave in a coil assembly to control relative current amplitudes, which takes advantage of the current-phase characteristics of such waves. Detection of RF magnetic fields results from an EMF generated in the coil assembly in response to the time-varying magnetic field; the high Q of the coil assembly enhances detection properties.
摘要翻译： 用于产生和检测在核磁共振（NMR）系统中横向于静磁场的方向以射频振荡的磁场分量的装置。 该装置具有彼此间隔开的多个导电元件以及静止磁场所指向的轴线。 控制导电元件中的交流电流的相对幅度以产生空间均匀的场。 优选实施例使用线圈组件中的驻波来控制相对电流幅度，其利用这种波的电流相位特性。 响应于时变磁场，在线圈组件中产生的EMF产生RF磁场的检测; 线圈组件的高Q增强了检测性能。
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公开(公告)号：US20080197848A1
公开(公告)日：2008-08-21
申请号：US11917010
申请日：2006-06-13
CPC分类号： G01R33/34046 , G01R33/3664
摘要： A radio frequency coil for magnetic resonance imaging or spectroscopy includes a plurality of generally parallel conductive members (70) surrounding a region of interest (14). One or more end members (72, 74) are disposed generally transverse to the plurality of parallel conductive members. A generally cylindrical radio frequency shield (32) surrounds the plurality of generally parallel conductive members. Switchable circuitry (80, 80′) selectably has: (i) a first switched configuration (90, 90′) in which the conductive members are operatively connected with the one or more end members; and (ii) a second switched configuration (92, 92′) in which the conductive members are operatively connected with the radio frequency shield. The radio frequency coil operates in a birdcage resonance mode in the first switched configuration and operates in a TEM resonance mode in the second switched configuration.
摘要翻译： 用于磁共振成像或光谱的射频线圈包括围绕感兴趣区域（14）的多个大致平行的导电构件（70）。 一个或多个端部构件（72,74）大致横向于多个平行导电构件设置。 通常为圆柱形的射频屏蔽（32）围绕多个大致平行的导电构件。 可切换电路（80,80'）可选择地具有：（i）第一开关构造（90,90'），其中导电构件与一个或多个端构件可操作地连接; 和（ii）其中导电构件与射频屏蔽可操作地连接的第二切换配置（92,92'）。 射频线圈在第一切换配置中以鸟笼共振模式工作，并且在第二切换配置中以TEM共振模式操作。
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公开(公告)号：US4086596A
公开(公告)日：1978-04-25
申请号：US669001
申请日：1976-03-22
申请人： Robert C. Gauss , Hemant T. Sathe , Lynn D. Wills
发明人： Robert C. Gauss , Hemant T. Sathe , Lynn D. Wills
CPC分类号： H01Q9/30
摘要： There is disclosed an antenna including an accurately formed whip member and an accurately formed loading coil one end of which is connected to one end of the whip member and the other end of which is connected to a single connector. The length of the whip member and its diameter and any associated metallic connector are selected to give a predeterminedly accurate capacitive value. The loading coil has a predeterminedly accurate inductive value such that the loading coil and whip member have a net accurate inductive value which is connected to a predeterminedly accurate capacitor for matching the impedance of the antenna to the conductor, coaxial cable for example, from the transmitter. The capacitor, a single stub connector, the end of the coaxial cable and the necessary connections are epoxy encapsulated in a base housing.The connector at the end of the loading coil is attached to the single stub connector in the base to provide the only connection necessary for the antenna to become operative.The loading coil is very accurately formed by a two-step molding process wherein the turns are first held in position by a first molding step followed by a second overmolding step which connects and holds the associated parts together. The overall accuracy thus obtained is such that no adjustments in the factory after assembly, nor in the field are necessary and the voltage standing wave ratio of the antenna throughout the operating frequency band (Citizens Band) is no greater than two to one.
摘要翻译： 公开了一种天线，其包括精确形成的鞭状构件和精确形成的装载线圈，其一端连接到鞭状构件的一端，另一端连接到单个连接器。 选择鞭状构件的长度及其直径和任何相关联的金属连接器以给出预定的精确的电容值。 负载线圈具有预定的精确的感应值，使得负载线圈和鞭状构件具有净精确的电感值，其连接到预定精度的电容器，用于将天线的阻抗与导体，例如同轴电缆从发射器 。 电容器，单个短截线连接器，同轴电缆的端部和必要的连接环氧树脂封装在基座外壳中。
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6.发明申请INTEGRATED SYSTEM OF MRI RF LOOP COILS PLUS SPACING FIXTURES WITH BIOCONTAINMENT USES 失效MRI RF环绕线圈集成系统采用生物化学用途加上间距公开(公告)号：US20080211498A1
公开(公告)日：2008-09-04
申请号：US11845827
申请日：2007-08-28
IPC分类号： G01R33/32 , G01R33/483
CPC分类号： G01R33/3415 , G01R33/34007 , G01R33/34084 , G01R33/3621
摘要： When scanning a patient to generate an image thereof, radio frequency (RF) coil modules are scalably coupled to each other using a plurality of clips to form flat or polygonal coil arrays that are placed on or around the patient or a portion thereof. A user assesses the volume to be imaged, identifies a coil array configuration of suitable size and shape and employs clips of one or more pre-determined angles to construct the identified coil array configuration, which is placed on or about the volume. Coil modules are coupled to a preamplifier interface box (PIB), which provides preamplified coil signal(s) to a patient imaging device, such as an MRI scanner. Small arrays are constructible to accommodate pediatric patients and/or smaller animals. Modules are hermetically sealed, can be sanitized between uses, and discarded at end-of-life. In one aspect, the modular coil array, clips, and PIB are maintained in an isolated contamination zone, separate from the patient imaging device.
摘要翻译： 当扫描患者以产生其图像时，射频（RF）线圈模块可以使用多个夹子彼此可伸缩地联接，以形成放置在患者或其一部分上或周围的平面或多边形线圈阵列。 用户评估要成像的体积，识别适当尺寸和形状的线圈阵列配置，并且使用一个或多个预定角度的夹子来构造放置在卷上或周围的所识别的线圈阵列配置。 线圈模块耦合到前置放大器接口盒（PIB），其将前置放大的线圈信号提供给诸如MRI扫描仪的患者成像装置。 小阵列是可构建的，以适应儿科患者和/或较小的动物。 模块密封，可在使用之间进行消毒，并在生命周期中丢弃。 在一个方面，模块化线圈阵列，夹子和PIB保持在与患者成像装置分开的隔离污染区域中。
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7.发明授权High power, multiple-frequency transmit-receive switch in magnetic resonance imaging 失效大功率，多频率发射接收开关在磁共振成像中公开(公告)号：US06198288B1
公开(公告)日：2001-03-06
申请号：US09200167
申请日：1998-11-25
申请人： Robert C. Gauss , Michael Burl
发明人： Robert C. Gauss , Michael Burl
IPC分类号： G01V300
CPC分类号： G01R33/3657 , G01R33/3628
摘要： A magnetic imaging apparatus includes an RF coil (F) in electrical communication with an RF signal generator (C) and a receiver (G) through an interface circuit (E). The signal generator transmits resonance excitation signals at one of at least two resonance frequencies, e.g. the resonance frequencies of hydrogen helium 3, fluorine, phosphorous, carbon, or xenon. During the transmit cycle, PIN diode (30) is forward biased forming a filter at a first resonance frequency, electrically isolating the receiver from first frequency excitation signals. Simultaneously during the transmit cycle, PIN diode (32) is forward biased forming a filter at a second resonance frequency electrically isolating the receiver from second frequency excitation signals. During a receive cycle, the diodes are reverse biased turning both filters into low impedance circuits around the first and second resonance frequencies allowing a received magnetic resonance signal to pass unimpeded from the RF coil to the receiver.
摘要翻译： 磁性成像装置包括通过接口电路（E）与RF信号发生器（C）电连接的RF线圈（F）和接收器（G）。 信号发生器以至少两个谐振频率中的一个发射谐振激励信号，例如， 氢氦3，氟，磷，碳或氙的共振频率。 在发射周期期间，PIN二极管（30）被正向偏置，形成处于第一谐振频率的滤波器，使接收器与第一频率激励信号电隔离。 同时在发射周期期间，PIN二极管（32）被正向偏置，在第二谐振频率处形成滤波器，使接收器与第二频率激励信号电隔离。 在接收周期期间，二极管被反向偏置，将两个滤波器转换成围绕第一和第二谐振频率的低阻抗电路，从而允许接收的磁共振信号从RF线圈不受阻碍地传递到接收器。
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公开(公告)号：US4058811A
公开(公告)日：1977-11-15
申请号：US668994
申请日：1976-03-22
申请人： Robert C. Gauss , Lynn D. Wills
发明人： Robert C. Gauss , Lynn D. Wills
CPC分类号： H01Q1/1214
摘要： A hermetically sealed mobile antenna base containing all of the components necessary to proper antenna functioning with the exception of the loading coil and antenna whip for vehicular application is disclosed. A single connector screw extends outwardly from the base casting and is insulated therefrom by an insulating washer. Interiorly of the base casting an impedance matching capacitor is disposed with one lead connected to the connector screw and the other lead connected to ground. The coaxial cable is led into the base casting and has its center conductor connected to the connecting screw and its ground conductor connected to the casting. The complete interior of the base casting is encapsulated with an epoxy compound. Spaced apart connection ears extend from one side of the base casting providing for attachment of the antenna base to the vehicle.
摘要翻译： 公开了一种气密密封的移动天线基座，其包含除了用于车辆应用的加载线圈和天线鞭子以外的正确的天线功能所需的所有部件。 单个连接器螺钉从基底铸件向外延伸并且通过绝缘垫圈与其绝缘。 配置阻抗匹配电容器的内部设置有一个引线连接到连接器螺钉，另一个引线连接到地。 同轴电缆被引入基座铸件，其中心导体连接到连接螺钉，其接地导体连接到铸件。 基础铸件的完整内部用环氧化合物包封。 间隔开的连接耳从基座铸件的一侧延伸，用于将天线基座附接到车辆。
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公开(公告)号：US07683623B2
公开(公告)日：2010-03-23
申请号：US11917010
申请日：2006-06-13
IPC分类号： G01V3/00
CPC分类号： G01R33/34046 , G01R33/3664
摘要： A radio frequency coil for magnetic resonance imaging or spectroscopy includes a plurality of generally parallel conductive members (70) surrounding a region of interest (14). One or more end members (72, 74) are disposed generally transverse to the plurality of parallel conductive members. A generally cylindrical radio frequency shield (32) surrounds the plurality of generally parallel conductive members. Switchable circuitry (80, 80′) selectably has: (i) a first switched configuration (90, 90′) in which the conductive members are operatively connected with the one or more end members; and (ii) a second switched configuration (92, 92′) in which the conductive members are operatively connected with the radio frequency shield. The radio frequency coil operates in a birdcage resonance mode in the first switched configuration and operates in a TEM resonance mode in the second switched configuration.
摘要翻译： 用于磁共振成像或光谱的射频线圈包括围绕感兴趣区域（14）的多个大致平行的导电构件（70）。 一个或多个端部构件（72,74）大致横向于多个平行导电构件设置。 通常为圆柱形的射频屏蔽（32）围绕多个大致平行的导电构件。 可切换电路（80,80'）可选择地具有：（i）第一开关构造（90,90'），其中导电构件与一个或多个端构件可操作地连接; 和（ii）其中导电构件与射频屏蔽可操作地连接的第二切换配置（92,92'）。 射频线圈在第一切换配置中以鸟笼共振模式工作，并且在第二切换配置中以TEM共振模式操作。
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10.发明授权Integrated system of MRI RF loop coils plus spacing fixtures with biocontainment uses 失效MRI射频回路线圈集成系统以及具有生物识别用途的间距夹具公开(公告)号：US07646199B2
公开(公告)日：2010-01-12
申请号：US11845827
申请日：2007-08-28
CPC分类号： G01R33/3415 , G01R33/34007 , G01R33/34084 , G01R33/3621
摘要： When scanning a patient to generate an image thereof, radio frequency (RF) coil modules are scalably coupled to each other using a plurality of clips to form flat or polygonal coil arrays that are placed on or around the patient or a portion thereof. A user assesses the volume to be imaged, identifies a coil array configuration of suitable size and shape and employs clips of one or more pre-determined angles to construct the identified coil array configuration, which is placed on or about the volume. Coil modules are coupled to a preamplifier interface box (PIB), which provides preamplified coil signal(s) to a patient imaging device, such as an MRI scanner. Small arrays are constructible to accommodate pediatric patients and/or smaller animals. Modules are hermetically sealed, can be sanitized between uses, and discarded at end-of-life. In one aspect, the modular coil array, clips, and PIB are maintained in an isolated contamination zone, separate from the patient imaging device.
摘要翻译： 当扫描患者以产生其图像时，射频（RF）线圈模块可以使用多个夹子彼此可伸缩地联接，以形成放置在患者或其一部分上或周围的平面或多边形线圈阵列。 用户评估要成像的体积，识别适当尺寸和形状的线圈阵列配置，并且使用一个或多个预定角度的夹子来构造放置在卷上或周围的所识别的线圈阵列配置。 线圈模块耦合到前置放大器接口盒（PIB），其将前置放大的线圈信号提供给诸如MRI扫描仪的患者成像装置。 小阵列是可构建的，以适应儿科患者和/或较小的动物。 模块密封，可在使用之间进行消毒，并在生命周期中丢弃。 在一个方面，模块化线圈阵列，夹子和PIB保持在与患者成像装置分开的隔离污染区域中。
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