公开(公告)号：US20060055409A1

公开(公告)日：2006-03-16

申请号：US11224831

申请日：2005-09-13

申请人： Helmut Kess

发明人： Helmut Kess

IPC分类号： G01V3/00

CPC分类号： G01R33/3685 ,  G01R33/341

摘要： A circuit arrangement for connection of at least two local coils of a magnetic resonance apparatus with at least two evaluation units has at least two sheath wave barriers arranged so that magnetic fields caused by them substantially cancel one another.

摘要翻译： 用于将磁共振装置的至少两个局部线圈与至少两个评估单元连接的电路装置具有布置成使得由它们引起的磁场基本相互抵消的至少两个鞘波屏障。

公开(公告)号：US20080309342A1

公开(公告)日：2008-12-18

申请号：US12137723

申请日：2008-06-12

申请人： Helmut Kess

发明人： Helmut Kess

IPC分类号： G01R33/32

CPC分类号： G01R33/3692 ,  G01R33/288 ,  G01R33/341 ,  G01R33/3657

摘要： A local coil arrangement for magnetic resonance applications has an acquisition coil for acquisition of a magnetic resonance signal excited in an examination subject by means of a transmission coil; and a transponder. The transponder is coupled to the acquisition coil such that it can be fed with electrical energy via the acquisition coil The transponder is fashioned to send a transponder signal on a transponder frequency when and as soon as an excitation signal induced in the acquisition coil by means of the transmission coil exceeds a threshold. When the control device receives the transponder signal, it adjusts the further operation of the transmission antenna or operates it only with reduced power.

摘要翻译： 用于磁共振应用的本地线圈装置具有采集线圈，用于通过传输线圈获取在检查对象中激发的磁共振信号; 和转发器。 应答器耦合到采集线圈，使得其可以经由采集线圈馈送电能。应答器被设计成当应答器频率发生时，并且一旦在采集线圈中感应的激励信号通过 传输线圈超过阈值。 当控制装置接收到应答器信号时，它调整发射天线的进一步操作或仅以降低的功率进行操作。

公开(公告)号：US20060028292A1

公开(公告)日：2006-02-09

申请号：US11191307

申请日：2005-07-28

申请人： Helmut Kess

发明人： Helmut Kess

IPC分类号： H01P1/10

CPC分类号： H03K17/76

摘要： In a circuit for connection of at least two signal sources with at least one signal output, the signal sources are connected with a control unit. The control unit activates or deactivates the signal sources by transmission of control signals. Each signal source is connected with a blocking unit. Each blocking unit is connected with the control unit. The blocking unit can block or enable a connection between the signal source and the signal output, with the connection being automatically enabled when the signal source is activated.

摘要翻译： 在用于将至少两个信号源与至少一个信号输出连接的电路中，信号源与控制单元连接。 控制单元通过传输控制信号激活或禁用信号源。 每个信号源与阻塞单元相连。 每个阻塞单元与控制单元相连。 阻塞单元可以阻止或启用信号源和信号输出之间的连接，当信号源被激活时，连接将自动启用。

公开(公告)号：US09588199B2

公开(公告)日：2017-03-07

申请号：US13858425

申请日：2013-04-08

申请人： Helmut Kess

发明人： Helmut Kess

IPC分类号： G01R33/36 ,  G01R33/28

CPC分类号： G01R33/36 ,  G01R33/288 ,  G01R33/3692

摘要： The present embodiments relate to apparatuses and methods for detecting unplugged local coils in a magnetic resonance tomography (MRT) device. The MRT device includes a local coil that has a RFID tag configured to detect transmitted RFID signals. When at least one transmitted RFID signal is detected, at least one unplugged local coil is detected in the MRT device.

摘要翻译： 本实施例涉及在磁共振断层摄影（MRT）装置中检测未插拔的本地线圈的装置和方法。 MRT装置包括具有RFID标签的局部线圈，其被配置为检测所发送的RFID信号。 当检测到至少一个发送的RFID信号时，在MRT设备中检测到至少一个未插拔的本地线圈。

公开(公告)号：US07696754B2

公开(公告)日：2010-04-13

申请号：US12137723

申请日：2008-06-12

申请人： Helmut Kess

发明人： Helmut Kess

IPC分类号： G01V3/00

CPC分类号： G01R33/3692 ,  G01R33/288 ,  G01R33/341 ,  G01R33/3657

摘要： A local coil arrangement for magnetic resonance applications has an acquisition coil for acquisition of a magnetic resonance signal excited in an examination subject by means of a transmission coil; and a transponder. The transponder is coupled to the acquisition coil such that it can be fed with electrical energy via the acquisition coil The transponder is fashioned to send a transponder signal on a transponder frequency when and as soon as an excitation signal induced in the acquisition coil by means of the transmission coil exceeds a threshold. When the control device receives the transponder signal, it adjusts the further operation of the transmission antenna or operates it only with reduced power.

摘要翻译： 用于磁共振应用的本地线圈装置具有采集线圈，用于通过传输线圈获取在检查对象中激发的磁共振信号; 和转发器。 应答器耦合到采集线圈，使得其可以经由采集线圈馈送电能。应答器被设计成当应答器频率发生时，并且一旦在采集线圈中感应的激励信号通过 传输线圈超过阈值。 当控制装置接收到应答器信号时，它调整发射天线的进一步操作或仅以降低的功率进行操作。

公开(公告)号：US4801885A

公开(公告)日：1989-01-31

申请号：US97138

申请日：1987-09-16

申请人： Ralph Meissner ,  Helmut Kess

发明人： Ralph Meissner ,  Helmut Kess

IPC分类号： G01R33/36 ,  G01R33/20

CPC分类号： G01R33/3657 ,  G01R33/3628

摘要： A nuclear magnetic resonance apparatus which is capable of identifying either spectra or images of an examination subject uses a body resonator, such as a whole-body antenna, for transmitting radio frequency signals at a wave length .lambda. to induce nuclear magnetic resonance phenomena in the examination subject, and a surface coil for receiving the resulting nuclear magnetic resonance signals. For decoupling the body resonator from the surface coil, a .lambda./4 line is connected to the surface coil. A terminating end of the .lambda./4 line is short-circuited during emission of radio frequency pulses by the body resonator, and is opened during reception of nuclear magnetic resonance signals using the surface coil. An effective detuning of the body resonator is thus achieved during the reception event, and at the same time the transmission event is minimally influenced.

摘要翻译： 能够识别检查对象的光谱或图像的核磁共振装置使用身体谐振器，例如全身天线，用于以波长λ传输射频信号，以在检查中引起核磁共振现象 主体和用于接收所得到的核磁共振信号的表面线圈。 为了将体谐振器与表面线圈分离，将λ/ 4线连接到表面线圈。 在通过身体谐振器发射射频脉冲期间，λ/ 4线的终端短路，并且在使用表面线圈接收核磁共振信号期间打开。 因此，在接收事件期间实现了体谐振器的有效失谐，同时传输事件受到最小的影响。

公开(公告)号：US4701710A

公开(公告)日：1987-10-20

申请号：US736768

申请日：1985-05-22

申请人： Ludger Freisen ,  Helmut Kess ,  Norbert Krause ,  Ralph Meissner

发明人： Ludger Freisen ,  Helmut Kess ,  Norbert Krause ,  Ralph Meissner

IPC分类号： A61B10/00 ,  A61B5/055 ,  G01R33/32 ,  G01R33/34 ,  G01R33/36 ,  G01R33/44 ,  G01R33/20

CPC分类号： G01R33/3635 ,  G01R33/34046

摘要： For the representation of images of regions selected from the interior of an examination subject, coils are provided for the application of a primary magnetic field and of magnetic gradient fields to the examination subject. An electrical conductor configuration detects the deflection of the atomic nuclei of the examination subject from their position of equilibrium as a result of high frequency magnetic excitation pulses. The configuration is formed by two interspersed individual conductor configurations adapted for respective different measurement frequencies. Each configuration comprises parallel conductors connected at their ends and arranged in spaced relation to an electrically grounded surface to form a transmission line configuration resonant at a respective one of the measurement frequencies.

摘要翻译： 对于从检查对象的内部选择的区域的图像的表示，提供用于向检查对象施加一次磁场和磁梯度场的线圈。 电导体结构由高频磁激励脉冲的结果检测检查对象的原子核从其平衡位置的偏移。 该配置由适合于各个不同测量频率的两个散置的单个导体配置形成。 每个配置包括在其端部连接并且与电接地表面间隔开地布置的并联导体，以形成在相应的一个测量频率下谐振的传输线配置。

公开(公告)号：US20150028868A1

公开(公告)日：2015-01-29

申请号：US14339099

申请日：2014-07-23

申请人： Yvonne Candidus ,  Karsten Jahns ,  Helmut Kess ,  Wolfgang Kraus ,  Jörg Rothard

发明人： Yvonne Candidus ,  Karsten Jahns ,  Helmut Kess ,  Wolfgang Kraus ,  Jörg Rothard

IPC分类号： G01R33/34

CPC分类号： G01R33/3403 ,  G01R33/34092 ,  G01R33/341

摘要： A local coil for a coil system of a magnetic resonance imaging (MRI) system having a hot spot formed during operation of the magnetic resonance imaging system provides an MRI examination that is as pleasant as possible for a patient with a magnetic field strength that is as strong as possible. The local coil includes a heat dissipation plate arranged in a region of the hot spot.

摘要翻译： 用于在磁共振成像系统操作期间形成的热点的磁共振成像（MRI）系统的线圈系统的局部线圈提供对于具有磁场强度的患者尽可能愉快的MRI检查， 尽可能强。 局部线圈包括布置在热点区域中的散热板。

公开(公告)号：US20100060426A1

公开(公告)日：2010-03-11

申请号：US12513427

申请日：2008-04-17

申请人： Helmut Kess

发明人： Helmut Kess

IPC分类号： H04Q5/22

CPC分类号： H03K17/18 ,  H03K17/74

摘要： An arrangement for monitoring the switching state of a switch has a monitoring circuit that monitors a circuit containing a first switch. The monitoring circuit has RFID electronics and a second switch. An outlet of the RFID electronics is connected in series with an RFID antenna, and the second switch is connected to an input of the RFID electronics, such that the second switch opens or closes the monitoring circuit dependent on the switching state thereof. The first and second switches are coupled to each other so that the switching state of the second switch is controlled as a function of the switching state of the first switch, so the switching state of the second switch represents the switching state of the first switch. An RFID reading device is within range of the RFID antenna, and feeds a query signal via the RFID antenna into the monitoring circuit to determine the representative switching state of the first switch via the switching state of the second switch.

摘要翻译： 用于监视开关的开关状态的装置具有监视包含第一开关的电路的监视电路。 监控电路具有RFID电子设备和第二开关。 RFID电子设备的出口与RFID天线串联连接，第二开关连接到RFID电子设备的输入端，使得第二开关根据其开关状态来打开或关闭监视电路。 第一和第二开关彼此耦合，使得第二开关的开关状态作为第一开关的开关状态的函数被控制，因此第二开关的开关状态表示第一开关的开关状态。 RFID读取装置在RFID天线的范围内，并且经由RFID天线将查询信号馈送到监视电路中，以通过第二开关的切换状态确定第一开关的代表性切换状态。

公开(公告)号：US20090091326A1

公开(公告)日：2009-04-09

申请号：US12238871

申请日：2008-09-26

申请人： Hubertus Fischer ,  Helmut Kess ,  Georg Rauh ,  Wilfried Schnell

发明人： Hubertus Fischer ,  Helmut Kess ,  Georg Rauh ,  Wilfried Schnell

IPC分类号： G01R33/32

CPC分类号： G01R33/3664 ,  G01R33/3642 ,  G01R33/4833 ,  G01R33/56366

摘要： A radio-frequency transmission device for a magnetic resonance system to generate magnetic resonance exposures of an examination region of an examination subject, has: a first radio-frequency transmission antenna that emits radio-frequency signals in the examination region, a radio-frequency amplifier that supplies the first radio-frequency transmission antenna, with radio-frequency signals with a predetermined radio-frequency transmission power, and a second radio-frequency transmission antenna fashioned to label a medium flowing in the examination region and/or examination regions via emission of labeling radio-frequency signals, such that the medium can be identified in the generated magnetic resonance exposures of the examination region. The second radio-frequency transmission antenna is coupled with the radio-frequency amplifier to supply the first radio-frequency transmission antenna, such that it likewise supplies the second radio-frequency transmission antenna with radio-frequency signals with a predetermined radio-frequency transmission power for the emission of radio-frequency labeling signals.

摘要翻译： 一种用于产生检查对象的检查区域的磁共振曝光的磁共振系统的射频传输装置，具有：在检查区域中发射射频信号的第一射频发射天线，射频放大器 其提供具有预定的射频发射功率的射频信号的第一射频发射天线，以及第二射频发射天线，其通过发射检测区域和/或检查区域中标记流经检查区域和/或检查区域的介质 标记射频信号，使得可以在产生的检查区域的磁共振暴露中识别介质。 第二射频发射天线与射频放大器耦合以提供第一射频发射天线，使得它同样向第二射频发射天线提供具有预定射频发射功率的射频信号 用于发射射频标签信号。