公开(公告)号：US09235202B2

公开(公告)日：2016-01-12

申请号：US13807026

申请日：2011-05-19

Applicant: Oliver Heid

Inventor： Oliver Heid

IPC: G05B15/02 ,  G01R33/54 ,  G01R33/28 ,  G01R33/56

CPC classification number: G05B15/02 ,  G01R33/28 ,  G01R33/543 ,  G01R33/5601 ,  G01R33/5608

Abstract: In a magnetic resonance system and a method and device for generating a control command sequence for operating the magnetic resonance system, a magnetic resonance data acquisition sequence is provided to a processor and is modified in the processor. The sequence operates the magnetic resonance system to acquire magnetic resonance data from a subject in multiple individual data acquisitions for subsequent automated evaluation of the individual data acquisitions with respect to an evaluation parameter. The individual evaluation results are combined into an overall evaluation result. The control command sequence is automatically modified in the processor by varying at least one sequence control parameter between different individual data acquisitions so that a variance of a measurement error in the overall evaluation result is minimized.

Abstract translation: 在用于产生用于操作磁共振系统的控制命令序列的磁共振系统和方法和装置中，向处理器提供磁共振数据获取序列，并在处理器中进行修改。 该序列操作磁共振系统以在多个单独的数据采集中从受试者获取磁共振数据，以便随后自动评估关于评估参数的各个数据采集。 将个人评估结果合并为一个整体评估结果。 通过在不同的单独数据采集之间改变至少一个序列控制参数来在处理器中自动修改控制命令序列，使得总体评估结果中的测量误差的变化最小化。

公开(公告)号：US09151810B2

公开(公告)日：2015-10-06

申请号：US11983861

申请日：2007-11-13

Applicant: Nikolaus Demharter ,  Jürgen Röβler

Inventor： Nikolaus Demharter ,  Jürgen Röβler

IPC: G01R33/28 ,  A61B5/00 ,  A61B5/0456 ,  G01R33/567 ,  A61B5/055

CPC classification number: G01R33/28 ,  A61B5/0456 ,  A61B5/055 ,  A61B5/7285 ,  A61B5/7292 ,  G01R33/5673

Abstract: The invention relates to a device for synchronizing a magnetic resonance unit with the cardiac rhythm of a patient, comprising a number of electrodes for leading off electrocardiogram signals from the body of the patient and an evaluation unit for determining a characteristic trigger time within a cardiac rhythm period of the patient from the electrocardiogram signals. In order to provide a device, which allows reliable determination of characteristic trigger times within the cardiac rhythm period of the patient even with elevated magnetic field strengths and which operates at least largely independently of external magnetic fields, it is proposed that the evaluation unit is designed to compare electrocardiogram signals obtained before and after the introduction of the patient into the magnetic resonance unit, in order to determine an enlargement of at least one characteristic of the electrocardiogram signals due to the magnetic field.

Abstract translation: 本发明涉及一种用于使磁共振单元与患者的心律同步的装置，包括用于从患者身体引出心电图信号的多个电极和用于确定心律的特征性触发时间的评估单元 病人从心电图信号的时期。 为了提供一种即使具有升高的磁场强度也可以在患者的心律周期内可靠地确定特征性触发时间并且至少在很大程度上独立于外部磁场而运行的装置，因此建议评估单元被设计 以将患者引入之前和之后获得的心电图信号与磁共振单元进行比较，以便确定由于磁场引起的心电图信号的至少一个特性的放大。

公开(公告)号：US20150253396A1

公开(公告)日：2015-09-10

申请号：US14201222

申请日：2014-03-07

Applicant: One Resonance Sensors, LLC

Inventor： Kevin Derby

IPC: G01R33/36

CPC classification number: G01N24/082 ,  G01N24/08 ,  G01R33/28 ,  G01R33/3642 ,  G01R33/583

Abstract: A device and system for generating a broadband excitation signal and corresponding excitation field to a substance under test in an NMR system is presented. The excitation signal is generated, according to a broadband transmitter, to a coil in the NMR system. A corresponding broadband receiver is also presented that acquires a response signal resulting from a response field emanating from the substance under test. Neither the transmitter nor the receiver require that the frequency of operation be determined according to a particular configuration of electrical devices to determine a resonance characteristic that tunes to a particular operational frequency. Rather, the operational frequency is determined according to control and driver devices triggered according to command and control signals in the case of the transmitter, and according to reactive elements, that are not configured as a tuned circuit, in the case of the receiver.

Abstract translation: 提出了一种用于在NMR系统中产生宽带激发信号和对待测物质的相应激发场的装置和系统。 根据宽带发射机产生激励信号到NMR系统中的线圈。 还提出了相应的宽带接收机，其获取由被测物质产生的响应场产生的响应信号。 发射机和接收机都不要求根据电气设备的特定配置来确定操作频率，以确定调谐到特定工作频率的谐振特性。 相反，在接收机的情况下，根据在发射机的情况下根据命令和控制信号触发的控制和驱动器设备以及未被配置为调谐电路的无功元件来确定操作频率。

公开(公告)号：US20150196226A1

公开(公告)日：2015-07-16

申请号：US14548276

申请日：2014-11-19

Applicant: Life Services LLC

Inventor： Brandon J. Tramm ,  Matthew T. Waks ,  Charles A. Lemaire ,  Scott M. Schillak

IPC: A61B5/055 ,  G01R33/34 ,  A61J15/00 ,  A61B5/053 ,  A61M16/00 ,  G01R33/28 ,  A61M21/02

CPC classification number: A61B5/0555 ,  A61B5/053 ,  A61B5/7405 ,  A61B5/7465 ,  A61B2503/06 ,  A61J15/00 ,  A61M16/00 ,  A61M21/02 ,  A61M2021/0027 ,  A61M2021/0066 ,  A61M2205/3368 ,  G01R33/28 ,  G01R33/283 ,  G01R33/34 ,  G01R33/34046 ,  G01R33/34084

Abstract: Apparatus and method for imaging a patient in an MRI system. This includes a frame, and at least one assembly that includes a patient-interface positioner connected to a reference position on the frame, a first lockable joint on the positioner; and a patient interface connected to a patient-proximal end of the positioner by a second joint, wherein the first patient-interface is moveably positioned to a selected pitch angle, a selected yaw angle, and a selected one of a plurality of distances relative to the reference position on the frame. The first lockable joint is configured to be tightened to yieldably hold the first patient-interface at the selected pitch and yaw angles, and at the selected one of the plurality of distances, relative to the reference position. Optionally a second substantially similar patient-interface and assembly are provided. The earpiece(s) optionally include audio transducer(s) and/or RF coil(s).

Abstract translation: 用于在MRI系统中对患者成像的装置和方法。 这包括框架和至少一个组件，其包括连接到框架上的参考位置的患者接口定位器，位于定位器上的第一可锁定接头; 以及通过第二关节连接到所述定位器的患者近端的患者接口，其中所述第一患者接口可移动地定位成选定的俯仰角，所选择的偏航角以及相对于 框架上的参考位置。 第一可锁定接头构造成被紧固以可靠地将第一患者接口保持在所选择的俯仰角和偏航角，并且相对于参考位置在多个距离中的选定的一个处。 可选地，提供第二基本相似的患者接口和组件。 耳机可选地包括音频换能器和/或RF线圈。

公开(公告)号：US09069049B2

公开(公告)日：2015-06-30

申请号：US13919926

申请日：2013-06-17

Applicant: Kaonetics Technologies, Inc.

Inventor： James Cornwell

IPC: G01V3/00 ,  G01R33/48 ,  G01R33/28

CPC classification number: G01R33/4808 ,  F41H13/0043 ,  G01R33/28 ,  G21K1/14 ,  G21K5/00 ,  H05H3/00

Abstract: Directed-energy systems and methods are described for disrupting electronic circuits, especially those containing semiconductors. A directed-energy system can include a charged particle generator configured to generate plural energized particles and a charge transformer configured to receive the plural energized particles that include charged particles and to output energized particles that include particles having substantially zero charge. The charged particle generator can be configured to direct the plural energized particles through the charge transformer in a predefined direction. A method for disrupting electronic circuits can include generating plural energized particles, directing the plural energized particles to an incident surface of a charge transformer and transforming the plural energized particles within the charge transformer. The transformed particles can be at substantially zero charge. The method can further include generating a wavefront at an exit surface of the charge transformer including the transformed particles and impinging an electronic circuit with the wavefront.

Abstract translation: 描述了用于扰乱电子电路的定向能量系统和方法，特别是那些包含半导体的电子电路。 定向能系统可以包括被配置为产生多个通电粒子的带电粒子发生器和被配置为接收包括带电粒子的多个带电粒子的电荷变换器，并输出包括具有基本零电荷的粒子的激励粒子。 带电粒子发生器可以被配置成沿预定方向引导多个通电的粒子穿过电荷变换器。 破坏电子电路的方法可以包括产生多个通电粒子，将多个通电粒子引导到电荷变换器的入射表面，并将电荷变换器内的多个通电粒子转化。 转化的颗粒可以基本上为零电荷。 该方法还可以包括在电荷变换器的出口表面处生成波前，其包括经变换的粒子并且与波前相撞的电子电路。

公开(公告)号：US20150168322A1

公开(公告)日：2015-06-18

申请号：US14400996

申请日：2013-05-13

Applicant: BOARD TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Evangelyn C. Alocilja ,  Yilun Luo

IPC: G01N24/08 ,  G01R33/28

CPC classification number: G01N24/08 ,  G01R33/28 ,  G01R33/302 ,  G01R33/448

Abstract: In one aspect, the disclosure relates to a nuclear magnetic resonance transceiver including: (a) a variable-frequency electromagnetic signal generator with (i) a frequency input and (ii) an EM signal output; (b) an electronic frequency controller including (i) a frequency output coupled to the frequency input of the variable-frequency EM signal generator, (ii) an intermediate frequency set-point input, and (iii) an intermediate frequency measurement input; (c) an NMR transmission probe with an EM signal input coupled to the EM signal output of the variable-frequency EM signal generator; (d) an NMR receiving probe with an EM signal output; and (e) an electronic mixer with (i) a first input coupled to the EM signal output of the NMR receiving probe, (ii) a second input coupled to the EM signal output of the variable-frequency EM signal generator, and (iii) a mixed EM signal output coupled to the frequency measurement input of the frequency controller.

Abstract translation: 一方面，本公开涉及一种核磁共振收发器，包括：（a）可变频率电磁信号发生器，其具有（i）频率输入和（ii）EM信号输出; （b）电子频率控制器，包括：（i）与可变频率EM信号发生器的频率输入耦合的频率输出，（ii）中频设定点输入，和（iii）中频测量输入; （c）具有耦合到可变频率EM信号发生器的EM信号输出的EM信号输入的NMR传输探针; （d）具有EM信号输出的NMR接收探针; 和（e）电子混合器，其具有（i）耦合到NMR接收探针的EM信号输出的第一输入，（ii）耦合到可变频率EM信号发生器的EM信号输出的第二输入，和（iii ）耦合到频率控制器的频率测量输入的混合EM信号输出。

公开(公告)号：US20150141803A1

公开(公告)日：2015-05-21

申请号：US14538635

申请日：2014-11-11

Applicant: Life Services LLC

Inventor： Brandon J. Tramm

IPC: A61B5/055 ,  G01R33/48 ,  A61B5/00 ,  G01R33/28

CPC classification number: A61B5/0555 ,  A61B5/053 ,  A61B5/7405 ,  A61B5/7465 ,  A61B2503/06 ,  A61J15/00 ,  A61M16/00 ,  A61M21/02 ,  A61M2021/0027 ,  A61M2021/0066 ,  A61M2205/3368 ,  G01R33/28 ,  G01R33/283 ,  G01R33/34 ,  G01R33/34046 ,  G01R33/34084

Abstract: Apparatus and method for imaging a patient in an MRI system. This includes a frame, and at least one assembly that includes an earpiece positioner connected to a reference position on the frame, a first lockable joint on the positioner; and an earpiece connected to a patient-proximal end of the positioner by a second joint, wherein the first earpiece is moveably positioned to a selected pitch angle, a selected yaw angle, and a selected one of a plurality of distances relative to the reference position on the frame. The first lockable joint is configured to be tightened to yieldably hold the first earpiece at the selected pitch and yaw angles, and at the selected one of the plurality of distances, relative to the reference position. Optionally a second substantially similar earpiece and assembly are provided. The earpiece(s) optionally include audio transducer(s) and/or RF coil(s).

Abstract translation: 用于在MRI系统中对患者成像的装置和方法。 这包括框架，以及包括连接到框架上的参考位置的耳机定位器的至少一个组件，定位器上的第一可锁定接头; 以及耳机，其通过第二关节连接到所述定位器的患者近端，其中所述第一耳机可移动地定位成选定的俯仰角，所选择的偏航角以及相对于所述参考位置的多个距离中选择的一个 在框架上。 第一可锁定接头构造成被紧固以可靠地将第一听筒保持在所选择的俯仰角和偏航角，并且相对于参考位置以多个距离中的选定的一个。 可选地，提供第二基本相似的耳机和组件。 耳机可选地包括音频换能器和/或RF线圈。

公开(公告)号：US20150065860A1

公开(公告)日：2015-03-05

申请号：US14481619

申请日：2014-09-09

Applicant: ViewRay Incorporated

Inventor： Shmaryu M. Shvartsman ,  Gordon DeMeester ,  James F. Dempsey ,  John Lester Patrick

IPC: A61N5/10 ,  G01R33/28 ,  A61B5/055 ,  G01R33/42

CPC classification number: A61N5/1049 ,  A61B5/055 ,  A61B5/0555 ,  A61N5/1039 ,  A61N5/1081 ,  A61N2005/1055 ,  A61N2005/1088 ,  A61N2005/1089 ,  A61N2005/1094 ,  G01R33/28 ,  G01R33/3806 ,  G01R33/42 ,  G01R33/421 ,  G01R33/4808

Abstract: A radiation therapy system comprises a magnetic resonance imaging (MRI) system combined with an irradiation system, which can include one or more linear accelerators (linacs) that can emit respective radiation beams suitable for radiation therapy. The MRI system includes a split magnet system, comprising first and second main magnets separated by gap. A gantry is positioned in the gap between the main MRI magnets and supports the linac(s) of the irradiation system. The gantry is rotatable independently of the MRI system and can angularly reposition the linac(s). Shielding can also be provided in the form of magnetic and/or RF shielding. Magnetic shielding can be provided for shielding the linac(s) from the magnetic field generated by the MRI magnets. RF shielding can be provided for shielding the MRI system from RF radiation from the linac.

Abstract translation: 放射治疗系统包括与照射系统组合的磁共振成像（MRI）系统，其可以包括可以发射适合于放射治疗的各个辐射束的一个或多个线性加速器（直线加速器）。 MRI系统包括分裂磁体系统，包括由间隙分开的第一和第二主磁体。 龙门架位于主MRI磁体之间的间隙中，并支撑照射系统的直线加速器。 台架可以独立于MRI系统旋转，并且可以有角度地重新定位直线加速器。 屏蔽也可以以磁性和/或RF屏蔽的形式提供。 可以提供磁屏蔽来屏蔽直线加速器与MRI磁铁产生的磁场。 可以提供射频屏蔽来屏蔽MRI系统免受来自直线加速器的射频辐射。

公开(公告)号：US08937475B2

公开(公告)日：2015-01-20

申请号：US13470442

申请日：2012-05-14

Applicant: James Malaney ,  Jennifer Black

Inventor： James Malaney ,  Jennifer Black

IPC: G01V3/00

CPC classification number: G01R33/28 ,  A61B6/508 ,  G01R33/36

Abstract: A noise abatement system includes a processor configured to measure noise in an imaging system and generate a switch mode power supply (SMPS) input signal based on the measured noise and an adjustable switched mode power supply configured to receive the SMPS input signal and adjust a switching frequency of the switched mode power supply, based on the SMPS signal, to operate at a frequency that generates harmonics that are outside of an imaging bandwidth of the imaging system. A system and calibration method are also described herein.

Abstract translation: 噪声消除系统包括被配置为测量成像系统中的噪声并且基于测量的噪声产生开关模式电源（SMPS）输入信号的处理器以及被配置为接收SMPS输入信号并调整开关的可调开关模式电源 基于SMPS信号的开关模式电源的频率以产生在成像系统的成像带宽之外的谐波的频率工作。 本文还描述了系统和校准方法。

公开(公告)号：US08929970B2

公开(公告)日：2015-01-06

申请号：US13472084

申请日：2012-05-15

Applicant: Ernest Wollin

Inventor： Ernest Wollin

IPC: A61B5/05 ,  G01R33/48 ,  G01R33/28

CPC classification number: G01R33/422 ,  A61B5/0035 ,  A61B5/0536 ,  A61B5/0555 ,  A61B5/708 ,  G01R33/28 ,  G01R33/30 ,  G01R33/4808

Abstract: A method of measurement of or mapping the distribution of complex permittivity, complex conductivity, complex impedance, or electric loss angle during magnetic resonance imaging or analysis. The method includes applying a time-varying electric field of a Faraday shield to a sample and cross-correlating the line spectrum signal so produced with the voltage applied to the Faraday shield in a detection circuit. The method permits non-contrast magnetic resonance screening for breast cancer in vivo and/or continuous measurement of electrical characteristics of materials at variable frequencies in vitro. A system of detecting and evaluating sample pathology includes a Faraday shield device that includes parallel electrodes oriented orthogonal to the static magnetic field of a MRI device to produce a time varying electric field. A detector is coupled to the MRI device to detect at least one of a complex permittivity, a complex conductivity, and an electrical impedance of the sample.

Abstract translation: 在磁共振成像或分析期间测量复合介电常数，复电导率，复阻抗或电损耗角分布的方法。 该方法包括将法拉第屏蔽的时变电场施加到样本，并将所产生的线谱信号与检测电路中施加到法拉第屏蔽的电压互相关。 该方法允许体内乳腺癌的非对比磁共振筛选和/或在体外以不同频率连续测量材料的电特性。 检测和评估样本病理学的系统包括法拉第屏蔽装置，其包括垂直于MRI装置的静磁场定向的平行电极，以产生时变电场。 检测器耦合到MRI装置以检测样品的复介电常数，复电导率和电阻抗中的至少一个。