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47 条记录 (耗时 0.04 秒)

    MRT and method for operating a clinical pTX system
    31.
    发明授权
    MRT and method for operating a clinical pTX system 有权

    公开(公告)号：US10830857B2

    公开(公告)日：2020-11-10

    申请号：US14819418

    申请日：2015-08-05

    申请人： Ralph Kimmlingen ,  Norbert Rietsch

    发明人： Ralph Kimmlingen ,  Norbert Rietsch

    IPC分类号： A61B5/00 ,  G01R33/58 ,  G01R33/3415 ,  G01R33/28 ,  G01R33/24

    摘要： A method and a magnetic resonance tomography (MRT) system are provided. The MRT system includes a controller configured to store a transmit vector that is established on a local-coil-specific basis. The transmit vector, for a specific local coil, indicates with which amplitudes and phases, transmit elements of the local coil may be controlled by a transmit device. The controller is configured to initiate a patient-specific calibration measurement on a patient to generate patient-specific calibration data representing a field distribution. The controller is also configured to determine deviations in the patient-specific calibration data from the stored transmit vector established on a local-coil-specific basis. The patient-specific calibration data is generated in the patient-specific calibration measurement on the patient and represents a field distribution. An imaging MRT measurement is not allowed if deviations exceed a threshold value, but is otherwise performed and is monitored by a monitoring device.

    MEDICAL IMAGING APPARATUS
    34.
    发明申请
    MEDICAL IMAGING APPARATUS 审中-公开
    医学成像设备

    公开(公告)号：US20130208249A1

    公开(公告)日：2013-08-15

    申请号：US13682794

    申请日：2012-11-21

    申请人： Ralph Kimmlingen

    发明人： Ralph Kimmlingen

    IPC分类号： G03B21/14

    CPC分类号： G03B21/14 ,  A61B5/0555 ,  G01R33/283

    摘要： A medical imaging apparatus includes a detector unit and a housing unit enclosing the detector unit. A cylindrical receiving region is provided for receiving a patient. The receiving region is enclosed in a cylindrical manner by the housing unit enclosing the detector unit. A projection unit is provided that has at least one projection surface unit, on which images of objects disposed outside the detector unit and the housing unit enclosing the detector unit are displayed to generate a virtual viewing window for an observer.

    摘要翻译： 医疗成像设备包括检测器单元和包围检测器单元的壳体单元。 提供圆柱形接收区域用于接收患者。 接收区域由围绕检测器单元的壳体单元以圆柱形方式封闭。 提供一种投影单元，其具有至少一个投影表面单元，在该投影表面单元上显示设置在检测器单元外部的物体图像和包围检测器单元的壳体单元，以生成观察者的虚拟观察窗口。

    FLOW SENSOR FOR COOLING WATER IN A GRADIENT COIL
    35.
    发明申请
    FLOW SENSOR FOR COOLING WATER IN A GRADIENT COIL 有权
    流体传感器，用于冷却水在一个梯级线圈

    公开(公告)号：US20110167924A1

    公开(公告)日：2011-07-14

    申请号：US13005351

    申请日：2011-01-12

    申请人： Ralph Kimmlingen

    发明人： Ralph Kimmlingen

    IPC分类号： G01F1/56

    CPC分类号： G01R33/3856

    摘要： A cooling water measurement system for a gradient system of an imaging system, such as a magnetic resonance system, is provided. A volume of cooling water flowing through at least one gradient system cooling water tube of the gradient system per unit of time is determined. The gradient system cooling water measurement system includes a voltage measurement system for measuring a Hall voltage.

    摘要翻译： 提供了一种用于诸如磁共振系统的成像系统的梯度系统的冷却水测量系统。 确定每单位时间流过梯度系统的至少一个梯度系统冷却水管的一定体积的冷却水。 梯度系统冷却水测量系统包括用于测量霍尔电压的电压测量系统。

    CONTROLLING GRADIENT COILS TAKING THE INDUCTIVE COUPLING INTO ACCOUNT
    36.
    发明申请
    CONTROLLING GRADIENT COILS TAKING THE INDUCTIVE COUPLING INTO ACCOUNT 有权
    控制电感线圈进入帐户

    公开(公告)号：US20130181713A1

    公开(公告)日：2013-07-18

    申请号：US13552442

    申请日：2012-07-18

    申请人： Eva Eberlein ,  Ralph Kimmlingen ,  Helmut Lenz ,  Franz Schmitt

    发明人： Eva Eberlein ,  Ralph Kimmlingen ,  Helmut Lenz ,  Franz Schmitt

    IPC分类号： G01R33/54 ,  G01R33/385

    CPC分类号： G01R33/543 ,  G01R33/385 ,  G01R33/3852

    摘要： A gradient pulse generator generates reference current signals for a plurality of gradient coils of a gradient coil system of a magnetic resonance system and supplies each of the reference current signals to a controller assigned to one of the gradient coils. Also supplied to the respective controller is an actual current signal that is characteristic of the current flowing in the respective gradient coil. Each of the controllers generates a control signal and accordingly drives a gradient power amplifier assigned to the respective gradient coil. The gradient power amplifiers apply a current to the gradient coils assigned to the gradient power amplifiers in accordance with the generated control signals. Each of the controllers is also supplied with the reference current signal or the actual current signal of at least one other gradient coil or the time derivative of the reference current signal or the actual current signal.

    摘要翻译： 梯度脉冲发生器产生用于磁共振系统的梯度线圈系统的多个梯度线圈的参考电流信号，并将每个参考电流信号提供给分配给一个梯度线圈的控制器。 还提供给相应控制器的是实际电流信号，其是在各个梯度线圈中流动的电流的特征。 每个控制器产生控制信号，并相应地驱动分配给相应梯度线圈的梯度功率放大器。 梯度功率放大器根据所生成的控制信号向分配给梯度功率放大器的梯度线圈施加电流。 每个控制器还提供参考电流信号或至少一个其他梯度线圈的实际电流信号或参考电流信号或实际电流信号的时间导数。

    METHOD AND DEVICE TO DETERMINE DISTORTION CORRECTION DATA
    37.
    发明申请
    METHOD AND DEVICE TO DETERMINE DISTORTION CORRECTION DATA 失效
    确定失真校正数据的方法和装置

    公开(公告)号：US20100172560A1

    公开(公告)日：2010-07-08

    申请号：US12633923

    申请日：2009-12-09

    申请人： Ralph Kimmlingen ,  Sabrina Kreher ,  Andreas Weidemann

    发明人： Ralph Kimmlingen ,  Sabrina Kreher ,  Andreas Weidemann

    IPC分类号： G06K9/00 ,  G01R33/48

    CPC分类号： G01R33/56572 ,  G01R33/243 ,  G01R33/443

    摘要： In a method and device to determine distortion correction data for distortion correction of magnetic resonance images acquired with a magnetic resonance system, a starting spherical function is calculated represents the magnetic field of a gradient coil of the magnetic resonance system on the basis of the conductor geometry of the gradient coil. A three-dimensional parameter map is determined that represents a magnetic field generated by the gradient coil using a defined measurement subject, with a defined gradient strength being set for the appertaining gradient coil. A deviation parameter map is generated on the basis of the parameter map and on the basis of a reference parameter map which was determined with deactivated gradient coil. Spherical function coefficients of the gradient magnetic field are determined by fitting a spherical function representing the magnetic field of the gradient coil to the deviation parameter map using the starting spherical function. The distortion correction data are determined on the basis of the spherical function coefficients of the fitted spherical function.

    摘要翻译： 在确定用磁共振系统获得的磁共振图像的失真校正的失真校正数据的方法和装置中，计算起始球面函数是基于导体几何形状表示磁共振系统的梯度线圈的磁场 的梯度线圈。 确定三维参数图，其表示由使用定义的测量对象的梯度线圈产生的磁场，其中设定用于所述渐变线圈的限定的梯度强度。 基于参数图生成偏差参数图，并基于用去激活梯度线圈确定的参考参数图。 通过使用起始球面函数将表示梯度线圈的磁场的球面函数拟合到偏差参数图来确定梯度磁场的球面函数系数。 基于拟合的球面函数的球面函数系数来确定失真校正数据。

    MAGNETIC RESONANCE APPARATUS WITH SHIM ARRANGEMENT
    38.
    发明申请
    MAGNETIC RESONANCE APPARATUS WITH SHIM ARRANGEMENT 审中-公开
    磁性共振装置与SHIM ARRANGEMENT

    公开(公告)号：US20090085567A1

    公开(公告)日：2009-04-02

    申请号：US12243044

    申请日：2008-10-01

    申请人： Ralph Kimmlingen ,  David Melotte ,  Wolfgang Renz ,  Ian Wilkinson

    发明人： Ralph Kimmlingen ,  David Melotte ,  Wolfgang Renz ,  Ian Wilkinson

    IPC分类号： G01R33/32 ,  A61B5/055

    CPC分类号： G01R33/3873 ,  A61B5/055 ,  G01R33/34076 ,  G01R33/3875 ,  G01R33/422

    摘要： A magnetic resonance apparatus has an examination region to accommodate a patient to be examined, and a body coil that circumferentially encompasses the examination region and is designed for magnetic resonance examination of the patient. A gradient coil circumferentially encompasses the examination region and the body coil and is designed to detect the position of magnetic resonance measurement values. A basic field magnet is designed to form a basic magnetic field in the examination region for a patient examination to be conducted. The basic field magnet at least partially encompasses the examination region, the body coil and the gradient coil. A shim device is used that is designed to influence the basic magnetic field. Components of the shim device and components of the body coil are associated to exhibit a common distance relative to the longitudinal axis of symmetry of the examination region and thus encompass the examination region.

    摘要翻译： 磁共振装置具有容纳被检查患者的检查区域和周向包围检查区域并被设计用于患者的磁共振检查的体线圈。 梯度线圈周向地包围检查区域和体线圈，并被设计成检测磁共振测量值的位置。 基本场磁体被设计成在检查区域中形成用于进行患者检查的基本磁场。 基本场磁体至少部分地包围检查区域，身体线圈和梯度线圈。 使用设计用于影响基本磁场的垫片装置。 垫片装置的组件和身体线圈的部件相关联，以显示相对于检查区域的纵向对称轴线的公共距离，并且因此包含检查区域。

    Magnetic resonance apparatus with an RF antenna unit and a gradient coil unit
    39.
    发明授权
    Magnetic resonance apparatus with an RF antenna unit and a gradient coil unit 有权
    具有RF天线单元和梯度线圈单元的磁共振设备

    公开(公告)号：US07230427B2

    公开(公告)日：2007-06-12

    申请号：US11208185

    申请日：2005-08-18

    申请人： Ralph Kimmlingen ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Markus Vester

    发明人： Ralph Kimmlingen ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Markus Vester

    IPC分类号： G01V3/00

    CPC分类号： G01R33/34046 ,  G01R33/385 ,  G01R33/422

    摘要： A magnetic resonance apparatus has an RF antenna unit, a gradient coil unit and an RF shield, the conductor structures of which are independent of one another. The RF shield is arranged between the RF antenna unit and the gradient coil unit, a first RF field return volume is arranged between RF the antenna unit (1, 29, 55A, and the gradient coil unit, the RF field return volume closes RF magnetic field lines of the RF antenna unit and is bordered by the RF shield on the side of the gradient coil unit. The conductor structure of the gradient coil unit occupies a first region. A second conductor-free region is within the first region, on the side facing the RF antenna unit, between a primary gradient coil unit and a secondary shim gradient coil unit of the gradient coil unit. The second conductor-free region is at least partially surrounded by the conductor structure of the gradient coil unit and is fashioned as a second RF field return volume in connection with the first RF field return volume. The RF shield proceeds between the RF field return volumes and the conductor structure of the gradient coil unit. The RF antenna unit is closer to the data acquisition region of the magnetic resonance apparatus than the gradient coil unit.

    摘要翻译： 磁共振装置具有RF天线单元，梯度线圈单元和RF屏蔽，其导体结构彼此独立。 RF屏蔽设置在RF天线单元和梯度线圈单元之间，RF天线单元（1,29,55A和梯度线圈单元之间）之间布置第一RF场返回音量，RF场返回音量关闭RF RF天线单元的磁场线，并且由梯形线圈单元侧的RF屏蔽界定，梯度线圈单元的导体结构占据第一区域，第二无导体区域在第一区域内，在 面向RF天线单元的一侧，梯度线圈单元的主梯度线圈单元和次级斜面梯形线圈单元之间，第二无导体区域至少部分地被梯度线圈单元的导体结构包围，并被形成 作为与第一RF场返回体积相关的第二RF场返回体积，RF屏蔽在RF场返回体积和梯度线圈单元的导体结构之间进行，RF天线单元更靠近 e数据采集区域比梯形线圈单元。