公开(公告)号：US08207736B2

公开(公告)日：2012-06-26

申请号：US12570759

申请日：2009-09-30

申请人： Dashen Chu ,  Robert S. Stormont ,  Saban Kurucay ,  Scott A. Lindsay ,  Ricardo M. Matias ,  Anthony D. Defranco

发明人： Dashen Chu ,  Robert S. Stormont ,  Saban Kurucay ,  Scott A. Lindsay ,  Ricardo M. Matias ,  Anthony D. Defranco

IPC分类号： G01V3/00

CPC分类号： G01R33/365 ,  G01R33/3621 ,  G01R33/3657

摘要： A method, system, and apparatus including a magnetic resonance (MR) coil system that includes an MR coil element, a high input Pre-amplifier having a high input impedance field-effect-transistor (FET) with an impedance of one of substantially equal to 500 ohms and greater than 500 ohms, and a conductive path. The conductive path has a first end coupled to the MR coil element and a second end coupled to the high input Pre-amplifier such that the MR coil element is coupled in series with the high input Pre-amplifier. Further, the conductive path is free of a matching network intervening between the MR coil element and the high input Pre-amplifier.

摘要翻译： 包括具有MR线圈元件的磁共振（MR）线圈系统的方法，系统和装置，具有高输入阻抗场效应晶体管（FET）的高输入前置放大器，其阻抗基本相等 至500欧姆且大于500欧姆，以及导电路径。 导电路径具有耦合到MR线圈元件的第一端和耦合到高输入前置放大器的第二端，使得MR线圈元件与高输入前置放大器串联耦合。 此外，导电路径没有介于MR线圈元件和高输入前置放大器之间的匹配网络。

公开(公告)号：US20110074415A1

公开(公告)日：2011-03-31

申请号：US12570807

申请日：2009-09-30

申请人： Dashen Chu ,  Robert S. Stormont ,  Saban Kurucay ,  Scott A. Lindsay ,  Ricardo M. Matias ,  Anthony D. Defranco

发明人： Dashen Chu ,  Robert S. Stormont ,  Saban Kurucay ,  Scott A. Lindsay ,  Ricardo M. Matias ,  Anthony D. Defranco

IPC分类号： G01R33/48 ,  G01R33/44

CPC分类号： G01R33/3415 ,  G01R33/3621 ,  G01R33/3635 ,  G01R33/365

摘要： A method, system, and apparatus including a radio-frequency (RF) phased coil array for a magnetic resonance (MR) imaging apparatus that includes a first RF coil element tuned to a first frequency and configured to receive MR signals and a second RF coil element tuned to a second frequency different than the first frequency and configured to receive MR signals.

摘要翻译： 一种包括用于磁共振（MR）成像装置的射频（RF）相控线圈阵列的方法，系统和装置，其包括被调谐到第一频率并被配置为接收MR信号的第一RF线圈元件和第二RF线圈 元件调谐到与第一频率不同的第二频率并被配置为接收MR信号。

公开(公告)号：US07667457B2

公开(公告)日：2010-02-23

申请号：US11615324

申请日：2006-12-22

申请人： Anton M. Linz ,  Chang L. Kim ,  Jim L. Malaney ,  David L. McDaniel ,  Robert S. Stormont ,  Ricardo Becerra

发明人： Anton M. Linz ,  Chang L. Kim ,  Jim L. Malaney ,  David L. McDaniel ,  Robert S. Stormont ,  Ricardo Becerra

IPC分类号： G01V3/00

CPC分类号： G01R33/28 ,  G01R33/481 ,  G01T1/1603

摘要： A gamma ray detector ring for a combined positron emission tomography (PET) and magnetic resonance imaging (MRI) system is integrated into a radio frequency (RF) coil assembly such that the detector ring is integrated with a RF shield. Each gamma ray detector in the detector ring includes a scintillator component that emits light when a gamma ray is detected and a photodetector component designed to be sensitive to the frequency of light produced by the scintillator. A RF shield may be integrated into a detector ring such that the RF shield is positioned between the scintillator and photodetector components of each detector, thereby saving valuable radial space within the imaging system. Multiple such detector rings may be located adjacent to one another to increase axial coverage and enable three-dimensional PET imaging techniques.

摘要翻译： 用于组合正电子发射断层摄影（PET）和磁共振成像（MRI）系统的伽马射线检测器环集成到射频（RF）线圈组件中，使得检测器环与RF屏蔽集成。 检测器环中的每个伽马射线检测器包括当检测到伽马射线时发光的闪烁体部件和设计成对由闪烁体产生的光的频率敏感的光检测器部件。 RF屏蔽可以集成到检测器环中，使得RF屏蔽物位于每个检测器的闪烁体和光电检测器部件之间，从而在成像系统内节省有价值的径向空间。 多个这样的检测器环可以彼此相邻放置以增加轴向覆盖并且能够进行三维PET成像技术。

公开(公告)号：US06492815B2

公开(公告)日：2002-12-10

申请号：US09748576

申请日：2000-12-22

申请人： Richard Scott Hinks ,  John E. Lorbiecki, Sr. ,  Robert S. Stormont ,  Cherik Bulkes

发明人： Richard Scott Hinks ,  John E. Lorbiecki, Sr. ,  Robert S. Stormont ,  Cherik Bulkes

IPC分类号： G01V300

CPC分类号： G01R33/28

摘要： A plurality of magnetic field induction coils and a radio frequency (RF) detection coil are supported by a frame which is inserted into the bore of an MRI system to detect magnetic fields produced by gradient pulses and RF pulses produced during a scan. The detected magnetic fields are processed to produce gradient waveforms and RF pulse waveforms that are displayed to the user.

摘要翻译： 多个磁场感应线圈和射频（RF）检测线圈由插入到MRI系统的孔中的框架支撑，以检测由扫描期间产生的梯度脉冲和RF脉冲产生的磁场。 检测到的磁场被处理以产生向用户显示的梯度波形和RF脉冲波形。

公开(公告)号：US08362776B2

公开(公告)日：2013-01-29

申请号：US12570807

申请日：2009-09-30

申请人： Dashen Chu ,  Robert S. Stormont ,  Saban Kurucay ,  Scott A. Lindsay ,  Ricardo M. Matias ,  Anthony D. Defranco

发明人： Dashen Chu ,  Robert S. Stormont ,  Saban Kurucay ,  Scott A. Lindsay ,  Ricardo M. Matias ,  Anthony D. Defranco

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/3621 ,  G01R33/3635 ,  G01R33/365

摘要： A method, system, and apparatus including a radio-frequency (RF) phased coil array for a magnetic resonance (MR) imaging apparatus that includes a first RF coil element tuned to a first frequency and configured to receive MR signals and a second RF coil element tuned to a second frequency different than the first frequency and configured to receive MR signals.

摘要翻译： 一种包括用于磁共振（MR）成像装置的射频（RF）相控线圈阵列的方法，系统和装置，其包括被调谐到第一频率并被配置为接收MR信号的第一RF线圈元件和第二RF线圈 元件调谐到与第一频率不同的第二频率并被配置为接收MR信号。

公开(公告)号：US20110074425A1

公开(公告)日：2011-03-31

申请号：US12570759

申请日：2009-09-30

申请人： Dashen Chu ,  Robert S. Stormont ,  Saban Kurucay ,  Scott A. Lindsay ,  Ricardo M. Matias ,  Anthony D. Defranco

发明人： Dashen Chu ,  Robert S. Stormont ,  Saban Kurucay ,  Scott A. Lindsay ,  Ricardo M. Matias ,  Anthony D. Defranco

IPC分类号： G01R33/44

CPC分类号： G01R33/365 ,  G01R33/3621 ,  G01R33/3657

摘要： A method, system, and apparatus including a magnetic resonance (MR) coil system that includes an MR coil element, a high input Pre-amplifier having a high input impedance field-effect-transistor (FET) with an impedance of one of substantially equal to 500 ohms and greater than 500 ohms, and a conductive path. The conductive path has a first end coupled to the MR coil element and a second end coupled to the high input Pre-amplifier such that the MR coil element is coupled in series with the high input Pre-amplifier. Further, the conductive path is free of a matching network intervening between the MR coil element and the high input Pre-amplifier.

摘要翻译： 包括具有MR线圈元件的磁共振（MR）线圈系统的方法，系统和装置，具有高输入阻抗场效应晶体管（FET）的高输入前置放大器，其阻抗基本相等 至500欧姆且大于500欧姆，以及导电路径。 导电路径具有耦合到MR线圈元件的第一端和耦合到高输入前置放大器的第二端，使得MR线圈元件与高输入前置放大器串联耦合。 此外，导电路径没有介于MR线圈元件和高输入前置放大器之间的匹配网络。

公开(公告)号：US07855559B2

公开(公告)日：2010-12-21

申请号：US12241257

申请日：2008-09-30

申请人： Anthony D. DeFranco ,  Matthew M. Meiller ,  Robert S. Stormont ,  Dashen Chu ,  Paul D. Haig

发明人： Anthony D. DeFranco ,  Matthew M. Meiller ,  Robert S. Stormont ,  Dashen Chu ,  Paul D. Haig

IPC分类号： G01V3/00

CPC分类号： G01R33/3657

摘要： A decoupling circuit for a radio frequency (RF) surface coil having a plurality of tuning capacitors includes at least two decoupling points and a DC source coupled to the at least two decoupling points. Each decoupling point is associated with one of the plurality of tuning capacitors. Each decoupling point includes a decoupling inductor connected in parallel with a tuning capacitor, a diode connected in series with the decoupling inductor and in parallel with the tuning capacitor, a resistor connected in parallel with the diode and at least one isolating inductor connected between the resistor and the diode to RF isolate the resistor. The value of the resistor in each decoupling point is selected to maintain a high quality factor (Q) of the RF surface coil and to reduce the switching speed of the decoupling circuit.

摘要翻译： 用于具有多个调谐电容器的射频（RF）表面线圈的去耦电路包括至少两个去耦点和耦合到该至少两个解耦点的DC源。 每个去耦点与多个调谐电容器中的一个相关联。 每个去耦点包括与调谐电容器并联连接的去耦电感器，与去耦电感器串联并与调谐电容器并联的二极管，与二极管并联连接的电阻器和连接在电阻器之间的至少一个隔离电感器 并且二极管以RF隔离电阻。 选择每个去耦点中的电阻器的值以保持RF表面线圈的高质量因子（Q）并降低去耦电路的开关速度。

公开(公告)号：US20100079139A1

公开(公告)日：2010-04-01

申请号：US12241257

申请日：2008-09-30

申请人： Anthony D. DeFranco ,  Matthew M. Meiller ,  Robert S. Stormont ,  Dashen Chu ,  Paul D. Haig

发明人： Anthony D. DeFranco ,  Matthew M. Meiller ,  Robert S. Stormont ,  Dashen Chu ,  Paul D. Haig

IPC分类号： G01R33/44

CPC分类号： G01R33/3657

摘要： A decoupling circuit for a radio frequency (RF) surface coil having a plurality of tuning capacitors includes at least two decoupling points and a DC source coupled to the at least two decoupling points. Each decoupling point is associated with one of the plurality of tuning capacitors. Each decoupling point includes a decoupling inductor connected in parallel with a tuning capacitor, a diode connected in series with the decoupling inductor and in parallel with the tuning capacitor, a resistor connected in parallel with the diode and at least one isolating inductor connected between the resistor and the diode to RF isolate the resistor. The value of the resistor in each decoupling point is selected to maintain a high quality factor (Q) of the RF surface coil and to reduce the switching speed of the decoupling circuit.

摘要翻译： 用于具有多个调谐电容器的射频（RF）表面线圈的去耦电路包括至少两个去耦点和耦合到该至少两个解耦点的DC源。 每个去耦点与多个调谐电容器中的一个相关联。 每个去耦点包括与调谐电容器并联连接的去耦电感器，与去耦电感器串联并与调谐电容器并联的二极管，与二极管并联连接的电阻器和连接在电阻器之间的至少一个隔离电感器 并且二极管以RF隔离电阻。 选择每个去耦点中的电阻器的值以保持RF表面线圈的高质量因子（Q）并降低去耦电路的开关速度。

公开(公告)号：US20080265887A1

公开(公告)日：2008-10-30

申请号：US11615324

申请日：2006-12-22

申请人： Anton M. Linz ,  Chang L. Kim ,  Jim L. Malaney ,  David L. McDaniel ,  Robert S. Stormont ,  Ricardo Becerra

发明人： Anton M. Linz ,  Chang L. Kim ,  Jim L. Malaney ,  David L. McDaniel ,  Robert S. Stormont ,  Ricardo Becerra

IPC分类号： G01R33/28 ,  G01T1/20

CPC分类号： G01R33/28 ,  G01R33/481 ,  G01T1/1603

摘要： A gamma ray detector ring for a combined positron emission tomography (PET) and magnetic resonance imaging (MRI) system is integrated into a radio frequency (RF) coil assembly such that the detector ring is integrated with a RF shield. Each gamma ray detector in the detector ring includes a scintillator component that emits light when a gamma ray is detected and a photodetector component designed to be sensitive to the frequency of light produced by the scintillator. A RF shield may be integrated into a detector ring such that the RF shield is positioned between the scintillator and photodetector components of each detector, thereby saving valuable radial space within the imaging system. Multiple such detector rings may be located adjacent to one another to increase axial coverage and enable three-dimensional PET imaging techniques.

摘要翻译： 用于组合正电子发射断层摄影（PET）和磁共振成像（MRI）系统的伽马射线检测器环集成到射频（RF）线圈组件中，使得检测器环与RF屏蔽集成。 检测器环中的每个伽马射线检测器包括当检测到伽马射线时发光的闪烁体部件和设计成对由闪烁体产生的光的频率敏感的光检测器部件。 RF屏蔽可以集成到检测器环中，使得RF屏蔽物位于每个检测器的闪烁体和光电检测器部件之间，从而在成像系统内节省有价值的径向空间。 多个这样的检测器环可以彼此相邻放置以增加轴向覆盖并且能够进行三维PET成像技术。

公开(公告)号：US5451876A

公开(公告)日：1995-09-19

申请号：US138273

申请日：1993-10-18

申请人： Lorraine V. Sandford ,  Joseph K. Maier ,  Robert S. Stormont

发明人： Lorraine V. Sandford ,  Joseph K. Maier ,  Robert S. Stormont

IPC分类号： G01R33/54 ,  A61B5/055 ,  G01R33/36 ,  G01R33/48 ,  G01V3/00

CPC分类号： G01R33/3621 ,  A61B5/055 ,  A61B5/7257

摘要： An NMR system includes a transceiver which receives NMR signals of varying amplitude during a scan. The gain of the receiver is dynamically changed during the scan to provide an optimal SNR figure without overranging the transceiver's A/D converter. The acquired NMR signals are normalized prior to image reconstruction using correction factors for gain and phase stored in a normalization table.

摘要翻译： NMR系统包括在扫描期间接收具有变化幅度的NMR信号的收发器。 接收机的增益在扫描期间动态改变，以提供最佳的SNR图，而不会超载收发器的A / D转换器。 获得的NMR信号在使用校正因子进行图像重建之前被归一化，所述校正因子用于存储在归一化表中的增益和相位。