公开(公告)号：US08360962B2

公开(公告)日：2013-01-29

申请号：US12735319

申请日：2008-12-08

申请人： Dirk Diehl ,  Ralph Oppelt ,  Johannes Reinschke

发明人： Dirk Diehl ,  Ralph Oppelt ,  Johannes Reinschke

IPC分类号： A61B1/00 ,  A61B5/05

CPC分类号： A61B5/073 ,  A61B1/00016 ,  A61B1/00158 ,  A61B1/041 ,  A61B1/273 ,  A61B5/062 ,  A61B5/07 ,  A61B34/73 ,  A61B2034/2051 ,  A61B2034/732 ,  A61B2090/3975

摘要： A system measures a change in position of a medical appliance, such as an endoscopy capsule. A device uses this measurement in order to influence the position of the medical appliance. The medical appliance sends a signal that is received by a multiplicity of spatially separate receiving devices. The time profile of the phase differences between the received signals and a reference signal provides an indication of whether the medical appliance has moved. In the event of a movement being detected, a maneuvering device can be regulated by a regulating means in such a way that the maneuvering device generates forces and/or torques and applies them to the medical appliance to counteract the detected movement.

摘要翻译： 系统测量诸如内窥镜胶囊的医疗器具的位置变化。 设备使用该测量来影响医疗器具的位置。 医疗器械发送由多个空间分开的接收装置接收的信号。 接收信号与参考信号之间的相位差的时间曲线提供了医疗设备是否已经移动的指示。 在检测到移动的情况下，操纵装置可以由调节装置调节，使得操纵装置产生力和/或扭矩，并将其施加到医疗器具以抵消检测到的运动。

公开(公告)号：US20120071117A1

公开(公告)日：2012-03-22

申请号：US13069272

申请日：2011-03-22

申请人： STEPHAN BIBER ,  Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

发明人： STEPHAN BIBER ,  Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

IPC分类号： H04B1/04

CPC分类号： G01R33/36 ,  G01R33/3621

摘要： Front bandpass filters that are essentially transmissive only between a minimum frequency and a maximum frequency filter the magnetic resonance signals. Front frequency mixers mix output signals of each of the bandpass filters with a front LO frequency that is standard for all the magnetic resonance signals. Rear bandpass filters that are essentially transmissive only around a front intermediate frequency filter the output signals of the front frequency mixers. Rear frequency mixers mix output signals of each of the rear bandpass filters with a respective constant rear LO frequency. Frequency filters that are transmissive for frequencies in the range of the difference of the rear LO frequency that is supplied to the rear frequency mixer arranged upstream thereof and the front intermediate frequency filter the output signals of the rear frequency mixers. Output signals of the frequency filters are combined into a common signal, which is transmitted onward.

摘要翻译： 仅在最小频率和最大频率之间基本上透射的前带通滤波器对磁共振信号进行滤波。 前置频率混频器将每个带通滤波器的输出信号与前置LO频率混合，这是所有磁共振信号的标准。 后置带通滤波器，其基本上仅在前置中频上滤波前频率混频器的输出信号。 后混频器将每个后带通滤波器的输出信号与相应的恒定后置LO频率混合。 频率滤波器对于提供给布置在其上游的后部混频器的后部LO频率的差异范围内的频率以及前部中频滤波器的后部混频器的输出信号的频率进行透射。 频率滤波器的输出信号被组合成公共信号，该公共信号向前发送。

公开(公告)号：US20100274086A1

公开(公告)日：2010-10-28

申请号：US12735319

申请日：2008-12-08

申请人： Dirk Diehl ,  Ralph Oppelt ,  Johannes Reinschke

发明人： Dirk Diehl ,  Ralph Oppelt ,  Johannes Reinschke

IPC分类号： A61B1/00

CPC分类号： A61B5/073 ,  A61B1/00016 ,  A61B1/00158 ,  A61B1/041 ,  A61B1/273 ,  A61B5/062 ,  A61B5/07 ,  A61B34/73 ,  A61B2034/2051 ,  A61B2034/732 ,  A61B2090/3975

摘要： A system measures a change in position of a medical appliance, such as an endoscopy capsule. A device uses this measurement in order to influence the position of the medical appliance. The medical appliance sends a signal that is received by a multiplicity of spatially separate receiving devices. The time profile of the phase differences between the received signals and a reference signal provides an indication of whether the medical appliance has moved. In the event of a movement being detected, a maneuvering device can be regulated by a regulating means in such a way that the maneuvering device generates forces and/or torques and applies them to the medical appliance to counteract the detected movement.

摘要翻译： 系统测量诸如内窥镜胶囊的医疗器具的位置变化。 设备使用该测量来影响医疗器具的位置。 医疗器械发送由多个空间分开的接收装置接收的信号。 接收信号与参考信号之间的相位差的时间曲线提供了医疗设备是否已经移动的指示。 在检测到移动的情况下，操纵装置可以由调节装置调节，使得操纵装置产生力和/或扭矩，并将其施加到医疗器具以抵消检测到的运动。

公开(公告)号：US20090201022A1

公开(公告)日：2009-08-13

申请号：US12369041

申请日：2009-02-11

申请人： Ralph Oppelt ,  Wolfgang Renz ,  Wilfried Schnell

发明人： Ralph Oppelt ,  Wolfgang Renz ,  Wilfried Schnell

IPC分类号： G01R33/20

CPC分类号： G01R33/3415 ,  G01R33/3403 ,  G01R33/34046 ,  G01R33/34076 ,  G01R33/3614 ,  G01R33/5659

摘要： An apparatus to control an antenna arrangement in a magnetic resonance apparatus has an amplifier with an input connected to a radio-frequency transmission signal to be amplified. The antenna arrangement has at least one antenna element for emission of the amplified transmission signal. The antenna element has an infeed point with two terminals, wherein the amplified transmission signal is connected at the terminals. The amplifier is connected on the output side with two terminals of the infeed point. The antenna element has at the infeed point, a mounting surface to accommodate the amplifier.

摘要翻译： 用于控制磁共振装置中的天线布置的装置具有放大器，其输入端连接到要放大的射频传输信号。 天线装置具有用于发射放大的发射信号的至少一个天线元件。 天线元件具有两个端子的馈电点，其中放大的发送信号在端子处连接。 放大器在输出侧连接有两个馈电点的端子。 天线元件在馈电点处具有用于容纳放大器的安装表面。

公开(公告)号：US07239144B2

公开(公告)日：2007-07-03

申请号：US11139069

申请日：2005-05-27

申请人： Ralph Oppelt ,  Markus Vester

发明人： Ralph Oppelt ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/3614

摘要： An antenna amplifier, in particular for a magnetic resonance antenna, has a sheath wave barrier integrated into the signal path of the antenna amplifier in the form of a component designed exclusively for transfer of a differential signal.

摘要翻译： 天线放大器，特别是用于磁共振天线的天线放大器具有集成到天线放大器的信号路径中的鞘波屏障，其以专门用于传送差分信号的部件的形式。

公开(公告)号：US07221162B2

公开(公告)日：2007-05-22

申请号：US10993644

申请日：2004-11-19

申请人： Thorsten Feiweier ,  Ralph Oppelt ,  Wolfgang Renz ,  Markus Vester

发明人： Thorsten Feiweier ,  Ralph Oppelt ,  Wolfgang Renz ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/5659 ,  G01R33/246 ,  G01R33/34046 ,  G01R33/34061 ,  G01R33/3415 ,  G01R33/3607 ,  G01R33/5612

摘要： A radio frequency transmitter arrangement for a magnetic resonance apparatus has a distribution unit and an antenna unit, wherein the antenna unit, to generate radio frequency fields, is fashioned in at least two orthogonal modes, and the distribution unit is fashioned for the division of an RF transmission signal into at least two mode feed signals. At least one adjustment unit is provided to adjust the amplitude and/or phase of one of the mode feed signals and is connected with the antenna unit such that each of the mode feed signals generates a radio frequency field in one of the modes. A multiple transmitter arrangement has at least two radio frequency transmitter arrangements and at least two 180° hybrids. A method is provided to determine at least one setting parameter of the adjustment unit.

摘要翻译： 用于磁共振装置的射频发射器装置具有分配单元和天线单元，其中生成射频场的天线单元以至少两个正交模式形成，并且分配单元被形成用于划分 RF传输信号转换成至少两个模式馈送信号。 提供至少一个调整单元以调整模式馈送信号之一的幅度和/或相位，并且与天线单元连接，使得每个模式馈送信号在其中一种模式中产生射频场。 多发射机布置具有至少两个射频发射机布置和至少两个180°混合。 提供了一种确定调节单元的至少一个设定参数的方法。

公开(公告)号：US07218113B2

公开(公告)日：2007-05-15

申请号：US11036727

申请日：2005-01-14

申请人： Thorsten Feiweier ,  Ralf Ladebeck ,  Ralph Oppelt ,  Wolfgang Renz ,  Markus Vester

发明人： Thorsten Feiweier ,  Ralf Ladebeck ,  Ralph Oppelt ,  Wolfgang Renz ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/5612 ,  G01R33/246 ,  G01R33/543 ,  G01R33/5659

摘要： In a magnetic resonance system and an operating method therefor, a B1 field distribution of a radio-frequency antenna is measured in at least one part of a examination volume of the magnetic resonance system, and then the RF pulses emitted by the radio-frequency antenna are optimized, based on the determined B1 field distribution, for homogenization in a specific volume. An effective volume within the examination volume is determined beforehand for each applied RF pulse and, based on the determined B1 field distribution, the appertaining RF pulse is individually adjusted such that the B1 field is homogenized within the effective volume of the RF pulse.

摘要翻译： 在磁共振系统及其操作方法中，在磁共振系统的检查体积的至少一部分中测量射频天线的B 1场分布，然后RF 基于确定的B SUB场分布来优化由射频天线发射的脉冲用于在特定体积中的均匀化。 对于每个施加的RF脉冲，预先确定检查体积内的有效体积，并且基于所确定的B SUB场分布，分别调整相应的RF脉冲，使得B <1> SUB>场在RF脉冲的有效体积内均匀化。

公开(公告)号：US20060250133A1

公开(公告)日：2006-11-09

申请号：US11395251

申请日：2006-04-03

申请人： Robert Krieg ,  Rainer Kuth ,  Ralf Ladebeck ,  Ralph Oppelt ,  Wolfgang Renz ,  Sebastian Schmidt ,  Markus Vester

发明人： Robert Krieg ,  Rainer Kuth ,  Ralf Ladebeck ,  Ralph Oppelt ,  Wolfgang Renz ,  Sebastian Schmidt ,  Markus Vester

IPC分类号： G06K9/00

CPC分类号： G01R33/481 ,  G01T1/1603

摘要： A positron emission tomography unit (PET), having a unit part assigned to an examination space and a first evaluation unit, is combined with a magnetic resonance tomography unit (MRT). The unit part of the PRT includes at least two gamma ray detector units with in each case an assigned electronics unit. The MRT includes a second evaluation unit, a gradient coil system and a high frequency antenna device formed as a stripline antenna device having at least two conductors. The high frequency antenna device is arranged nearer to the examination space than the gradient coil system with a high frequency shield between the gradient coil system and the high frequency antenna device. Each conductor of the stripline antenna device respectively includes a gamma ray detector unit with an assigned electronics unit. The conductors of the stripline antenna device are configured for the respective gamma ray detector units and their assigned electronics units as shielding covers that are caused by the high frequency antenna device and are opaque to high frequency radiation. An examination object in the examination space can be imaged by the combined positron emission tomography and magnetic resonance tomography unit.

摘要翻译： 将具有分配给检查空间的单位部分和第一评估单元的正电子发射断层摄影单元（PET）与磁共振断层摄影单元（MRT）组合。 PRT的单位部分包括至少两个伽马射线检测器单元，在每种情况下都是分配的电子单元。 MRT包括第二评估单元，梯度线圈系统和形成为具有至少两个导体的带状线天线装置的高频天线装置。 高频天线装置布置成比梯度线圈系统和高频天线装置之间具有高频屏蔽的梯度线圈系统更靠近检查空间。 带状线天线装置的每个导体分别包括具有分配的电子单元的伽马射线检测器单元。 带状线天线装置的导体被配置用于相应的伽马射线检测器单元及其分配的电子单元作为由高频天线装置引起并且对高频辐射不透明的屏蔽盖。 检查空间中的检查对象可以通过组合的正电子发射断层摄影和磁共振断层摄影单元成像。

公开(公告)号：US20060038568A1

公开(公告)日：2006-02-23

申请号：US11200815

申请日：2005-08-10

申请人： Ralph Oppelt

发明人： Ralph Oppelt

IPC分类号： G01V3/00

CPC分类号： G01R33/3657 ,  G01R33/341

摘要： A reception unit for a magnetic resonance tomography apparatus has an RF preamplifier connected at its signal input to a local coil with a PIN diode connected in parallel with the signal input and a supply voltage connection of the RF preamplifier being connected to a direct voltage source. The reception unit has a supply node that is connected with the supply voltage connection, the PIN diode and a cross-over switch for alternating connection of the supply node to the direct voltage source or a direct current source.

公开(公告)号：US06982598B2

公开(公告)日：2006-01-03

申请号：US10702035

申请日：2003-11-06

申请人： Ralph Oppelt

发明人： Ralph Oppelt

IPC分类号： H03F3/45

CPC分类号： H03F1/30 ,  H03F3/45098 ,  H03F2203/45496 ,  H03F2203/45702

摘要： Two amplifier transistors are arranged in parallel and a current source is connected to a common emitter line of the amplifier transistors and produces a temperature-independent quiescent current. In order for both the small-signal gain and the large-signal response to be independent of temperature, the emitters of the two amplifier transistors are connected to one another by a compensation resistor which has a negative temperature coefficient.

摘要翻译： 两个放大器晶体管并联布置，并且电流源连接到放大器晶体管的公共发射极线，并产生不依赖于温度的静态电流。 为了使小信号增益和大信号响应都与温度无关，两个放大器晶体管的发射极通过具有负温度系数的补偿电阻相互连接。