专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07622921B2 Method and device for monitoring radio-frequency exposure in a magnetic resonance measurement 有权
标题翻译：用于监测磁共振测量中射频暴露的方法和装置
公开(公告)号：US07622921B2
公开(公告)日：2009-11-24
申请号：US11965809
申请日：2007-12-28
申请人： Joerg Ulrich Fontius , Juergen Nistler , Wolfgang Renz , Franz Schmitt , Karsten Wicklow
发明人： Joerg Ulrich Fontius , Juergen Nistler , Wolfgang Renz , Franz Schmitt , Karsten Wicklow
IPC分类号： G01V3/00
CPC分类号： G01R33/3415 , G01R33/288 , G01R33/5612
摘要： In a method and device for monitoring the physiologically effective radio-frequency exposure in at least one specific volume region of an examination subject in a magnetic resonance data acquisition scan in a magnetic resonance system, amplitude values are acquired that respectively represent, at specific acquisition points in time, a signal amplitude of the radio-frequency signals emitted or to be emitted via the radio-frequency signal channels. Also, phase values are acquired that represent the phases of the appertaining radio-frequency signals at these points in time. Local exposure values are then determined on the basis of the amplitude values and phase values, respectively representing a physiological exposure that the radio-frequency pulses cause at the examination subject at a specific location at a specific time. Based on this, exposure control values are determined that are compared with predetermined exposure limit values. When an exposure limit values is reached or exceeded, a control signal is output.
摘要翻译：在用于在磁共振系统的磁共振数据采集扫描中监测检查对象的至少一个特定体积区域中的生理上有效的射频暴露的方法和装置中，获取分别表示在特定采集点在时间上，经由射频信号信道发射或将要发射的射频信号的信号幅度。此外，获取代表在这些时间点处的无线电频率信号的相位的相位值。然后根据振幅值和相位值来确定本地曝光值，分别表示在特定时间在特定位置处的检查对象发生的射频脉冲引起的生理暴露。基于此，确定与预定曝光极限值进行比较的曝光控制值。当达到或超过曝光限制值时，输出控制信号。

2. 发明申请

US20080157765A1 METHOD AND DEVICE FOR MONITORING RADIO-FREQUENCY EXPOSURE IN A MAGNETIC RESONANCE MEASUREMENT 有权
标题翻译：用于监测磁共振测量中的无线电频率接触的方法和装置
公开(公告)号：US20080157765A1
公开(公告)日：2008-07-03
申请号：US11965809
申请日：2007-12-28
申请人： Joerg Ulrich Fontius , Juergen Nistler , Wolfgang Renz , Franz Schmitt , Karsten Wicklow
发明人： Joerg Ulrich Fontius , Juergen Nistler , Wolfgang Renz , Franz Schmitt , Karsten Wicklow
IPC分类号： G01R33/483
CPC分类号： G01R33/3415 , G01R33/288 , G01R33/5612
摘要： In a method and device for monitoring the physiologically effective radio-frequency exposure in at least one specific volume region of an examination subject in a magnetic resonance data acquisition scan in a magnetic resonance system, the magnetic resonance system having a radio-frequency antenna structure with a number of individually controllable radio-frequency signal channels for generation of radio-frequency field distributions in an examination volume including the examination subject, amplitude values are acquired that respectively represent, at specific acquisition points in time, a signal amplitude of the radio-frequency signals emitted or to be emitted via the radio-frequency signal channels in the course of the magnetic resonance measurement. Also, phase values are acquired that represent the phases of the appertaining radio-frequency signals at these points in time. Local exposure values are then determined on the basis of the amplitude values and phase values, these local exposure values respectively representing a physiological exposure that the radio-frequency pulses cause at the examination subject at a specific location at a specific time. Based on this, exposure control values are determined that are compared with predetermined exposure limit values. When an exposure limit values is reached or exceeded, a control signal is output.
摘要翻译：在用于在磁共振系统的磁共振数据采集扫描中监测检查对象的至少一个特定体积区域中的生理上有效的射频暴露的方法和装置中，所述磁共振系统具有射频天线结构，在包括检查对象的检查体积中产生用于产生射频场分布的多个独立控制的射频信号通道，获取分别在特定采集时间点表示射频信号幅度的振幅值在磁共振测量过程中通过射频信号通道发射或发射的信号。此外，获取代表在这些时间点处的无线电频率信号的相位的相位值。然后基于振幅值和相位值来确定局部曝光值，这些局部曝光值分别表示在特定时间的特定位置的射频脉冲在检查对象下引起的生理暴露。基于此，确定与预定曝光极限值进行比较的曝光控制值。当达到或超过曝光限制值时，输出控制信号。

3. 发明授权

US07902822B2 Method for adjustment of a B1 field of a magnetic resonance apparatus 有权
标题翻译：用于调整磁共振装置的B1场的方法
公开(公告)号：US07902822B2
公开(公告)日：2011-03-08
申请号：US12051127
申请日：2008-03-19
申请人： Joerg Ulrich Fontius , Franz Schmitt , Karsten Wicklow
发明人： Joerg Ulrich Fontius , Franz Schmitt , Karsten Wicklow
IPC分类号： G01V3/00
CPC分类号： G01R33/583 , G01R33/288 , G01R33/36 , G01R33/5608 , G01R33/5612 , G01R33/5659
摘要： In a method for adjustment of a B1 field in a magnetic resonance apparatus, the position of the measurement subject relative to a coordinate system is determined from a plurality of measurement subjects with a morphological magnetic resonance measurement. Respective tissue types of the measurement subject are determined using three-dimensional measurement subject data and a segmentation of the measurement subject into regions is effected using the tissue types having known dielectric properties. The segmentation and the association for all positions of the measurement subject are recorded for all subjects in respective entries of a database. A radio-frequency simulation for transmission coils is implemented with the entries of the database wherein electrical field distributions and/or B1 field distributions related to spatial elements are determined and are entered as results into the database, that is then used further magnetic resonance examinations.
摘要翻译：在用于调整磁共振装置中的B1场的方法中，从具有形态磁共振测量的多个测量对象确定测量对象相对于坐标系的位置。使用三维测量对象数据确定测量对象的各种组织类型，并且使用具有已知介电特性的组织类型将测量对象分割成区域。为数据库的各个条目中的所有科目记录测量对象的所有位置的分割和关联。用数据库条目实现传输线圈的射频仿真，其中确定与空间元素相关的电场分布和/或B1场分布，并作为结果输入到数据库中，然后使用进一步的磁共振检查。

4. 发明申请

US20080231270A1 METHOD FOR ADJUSTMENT OF A B1 FIELD OF A MAGNETIC RESONANCE APPARATUS 有权
标题翻译：用于调整B1磁场谐振装置的方法
公开(公告)号：US20080231270A1
公开(公告)日：2008-09-25
申请号：US12051127
申请日：2008-03-19
申请人： Joerg Ulrich Fontius , Franz Schmitt , Karsten Wicklow
发明人： Joerg Ulrich Fontius , Franz Schmitt , Karsten Wicklow
IPC分类号： G01R33/48
CPC分类号： G01R33/583 , G01R33/288 , G01R33/36 , G01R33/5608 , G01R33/5612 , G01R33/5659
摘要： In a method for adjustment of a B1 field in a magnetic resonance apparatus, the position of the measurement subject relative to a coordinate system is determined from a plurality of measurement subjects with a morphological magnetic resonance measurement. Three-dimensionally associable measurement subject data are determined from the measurement subject. Respective tissue types of the measurement subject are determined using the three-dimensional measurement subject data and a segmentation of the measurement subject into regions is effected using the tissue types. Known dielectric properties are respectively associated with the tissue types. The segmentation and the association for all positions of the measurement subject are recorded in respective entries of a database, such that the database contains all entries of the measurement subjects. A radio-frequency simulation for an transmission coils is implemented with the entries of the database, with which electrical field distributions and/or B1 field distributions related to spatial elements are determined as a simulation result and are entered as results into the database. For further magnetic resonance examinations, the entries of the database are used for determination of an optimized current distribution for elements of a transmission coil with which the B1 field is ultimately adjusted.
摘要翻译：在用于调整磁共振装置中的B1场的方法中，从具有形态磁共振测量的多个测量对象确定测量对象相对于坐标系的位置。从测量对象确定三维可关联的测量对象数据。使用三维测量对象数据确定测量对象的各种组织类型，并且使用组织类型对测量对象进入区域进行分割。已知的介电性质分别与组织类型相关。将测量对象的所有位置的分割和关联记录在数据库的相应条目中，使得数据库包含测量对象的所有条目。用数据库的条目实现传输线圈的射频仿真，将与空间元素相关的电场分布和/或B1场分布确定为模拟结果并作为结果输入到数据库中。对于进一步的磁共振检查，数据库的条目用于确定最终调整B1场的传输线圈元件的优化电流分布。

5. 发明授权

US08653821B2 HF attenuation 有权
标题翻译： HF衰减
公开(公告)号：US08653821B2
公开(公告)日：2014-02-18
申请号：US13172803
申请日：2011-06-29
申请人： Wolfgang Renz , Karsten Wicklow
发明人： Wolfgang Renz , Karsten Wicklow
IPC分类号： G01V3/00
CPC分类号： G01R33/422 , G01R33/4802
摘要： The present embodiments relate to a device and a method for attenuating a high-frequency field of a magnetic resonance tomography system, where at least one attenuation element attenuating high-frequency fields is provided outside a magnetic resonance tomography field of view.
摘要翻译：本实施例涉及用于衰减磁共振断层摄影系统的高频场的装置和方法，其中至少一个衰减高频场的衰减元件设置在磁共振断层摄影视野外。

6. 发明授权

US08436615B2 Detunable waveguide antenna assembly 失效
标题翻译：无路波导天线组件
公开(公告)号：US08436615B2
公开(公告)日：2013-05-07
申请号：US12832267
申请日：2010-07-08
申请人： Wolfgang Renz , Karsten Wicklow
发明人： Wolfgang Renz , Karsten Wicklow
IPC分类号： G01R33/00 , A61B5/055
CPC分类号： G01R33/345 , G01R33/3453 , G01R33/365 , G01R33/3657 , G01R33/3685
摘要： A waveguide antenna assembly for a magnetic resonance tomography apparatus, particularly a waveguide antenna assembly that can be detuned for an operation with local coils, is composed of multiple metal surfaces connected by diodes respectively located between the metal surfaces. Only when the diodes are through-connected between these metal surfaces are the surfaces connected with one another in terms of RF signals via these diodes, so the assembly operates as a waveguide antenna. When the diodes are disabled between these metal surfaces, the surfaces are unconnected with one another for RF signals.
摘要翻译：用于磁共振断层摄影装置的波导天线组件，特别是能够与本地线圈进行操作而失谐的波导天线组件，由分别位于金属表面之间的二极管连接的多个金属表面组成。只有当二极管连接在这些金属表面之间时，这些表面是通过这些二极管以RF信号相互连接的表面，因此组件作为波导天线工作。当在这些金属表面之间禁用二极管时，表面彼此不连接用于RF信号。

7. 发明申请

US20160146913A1 PHASE MONITORING FOR MULTICHANNEL MR TRANSMISSION SYSTEMS 审中-公开
标题翻译：多通道MR传输系统的相位监测
公开(公告)号：US20160146913A1
公开(公告)日：2016-05-26
申请号：US14935564
申请日：2015-11-09
申请人： Wolfgang Renz , Karsten Wicklow
发明人： Wolfgang Renz , Karsten Wicklow
IPC分类号： G01R33/483 , G01R33/54 , G01R33/36
摘要： A magnetic resonance tomography system is provided having a multichannel transmission system for generating signals to be transmitted for multiple transmit channels. The system includes devices for decoupling signals of different transmit channels from a transmit chain and applying signals decoupled from the transmit chain at inputs of a Butler matrix. The system includes a Butler matrix configured such that a combination of signals of different transmit channels applied at its inputs occurs such that the amplitude of Butler matrix output signals at outputs of the Butler matrix is a function of the relative phases that the phases of signals of different transmit channels have relative to each other at inputs of the Butler matrix. The Butler matrix output signals are applied at inputs of a monitoring unit configured to determine the relative phases of the signals on a basis of amplitudes of the Butler matrix output signals.
摘要翻译：提供了一种磁共振断层摄影系统，其具有用于产生要发射用于多个发射信道的信号的多信道传输系统。该系统包括用于从发射链中去耦合不同发射信道的信号并且在Butler矩阵的输入处应用从发射链解耦的信号的装置。该系统包括配置为使得在其输入处施加的不同发射信道的信号的组合发生的Butler矩阵，使得Butler矩阵的输出处的Butler矩阵输出信号的幅度是相关相位的函数，在Butler矩阵的输入处，不同的发送信道彼此相对。巴特勒矩阵输出信号被施加在监视单元的输入处，该监视单元被配置为基于巴特勒矩阵输出信号的幅度确定信号的相对相位。

8. 发明申请

US20120161763A1 HF ATTENUATION 有权
标题翻译：高频衰减
公开(公告)号：US20120161763A1
公开(公告)日：2012-06-28
申请号：US13172803
申请日：2011-06-29
申请人： Wolfgang Renz , Karsten Wicklow
发明人： Wolfgang Renz , Karsten Wicklow
IPC分类号： G01R33/48 , G01R33/34
CPC分类号： G01R33/422 , G01R33/4802
摘要： The present embodiments relate to a device and a method for attenuating a high-frequency field of a magnetic resonance tomography system, where at least one attenuation element attenuating high-frequency fields is provided outside a magnetic resonance tomography field of view.
摘要翻译：本实施例涉及用于衰减磁共振断层摄影系统的高频场的装置和方法，其中至少一个衰减高频场的衰减元件设置在磁共振断层摄影视野外。

9. 发明申请

US20110012810A1 DETUNABLE WAVEGUIDE ANTENNA ASSEMBLY 失效
标题翻译：可拆卸波导天线装配
公开(公告)号：US20110012810A1
公开(公告)日：2011-01-20
申请号：US12832267
申请日：2010-07-08
申请人： Wolfgang Renz , Karsten Wicklow
发明人： Wolfgang Renz , Karsten Wicklow
IPC分类号： H01Q15/02
CPC分类号： G01R33/345 , G01R33/3453 , G01R33/365 , G01R33/3657 , G01R33/3685
摘要： A waveguide antenna assembly for a magnetic resonance tomography apparatus, particularly a waveguide antenna assembly that can be detuned for an operation with local coils, is composed of multiple metal surfaces connected by diodes respectively located between the metal surfaces. Only when the diodes are through-connected between these metal surfaces are the surfaces connected with one another in terms of RF signals via these diodes, so the assembly operates as a waveguide antenna. When the diodes are disabled between these metal surfaces, the surfaces are unconnected with one another for RF signals.
摘要翻译：用于磁共振断层摄影装置的波导天线组件，特别是能够与本地线圈进行操作而失谐的波导天线组件，由分别位于金属表面之间的二极管连接的多个金属表面组成。只有当二极管连接在这些金属表面之间时，这些表面是通过这些二极管以RF信号相互连接的表面，因此组件作为波导天线工作。当在这些金属表面之间禁用二极管时，表面彼此不连接用于RF信号。

10. 发明授权

US07707043B2 Method to input and store data for a clinical study 失效
标题翻译：输入和存储临床研究数据的方法
公开(公告)号：US07707043B2
公开(公告)日：2010-04-27
申请号：US10780211
申请日：2004-02-17
申请人： Rainer Kuth , Karsten Wicklow
发明人： Rainer Kuth , Karsten Wicklow
IPC分类号： G06Q10/00 , G06Q50/00 , A61B5/00 , G06F19/00
CPC分类号： G06Q50/24 , G06F19/00 , G06Q50/22 , G16H10/20 , G16H10/60
摘要： A method provides for inputting and storing data for a clinical study in a uniform manner by different study locations. Accordingly, the method comprises generation of an input platform program for an input of data of a clinical study, distribution of the input platform to input locations, calling up and activating the input platform program dependent on a participant characteristic linked with a study participant in the clinical study, inputting the data at an input location via an input platform generated by the input platform program, and storing the input data.
摘要翻译：一种方法可以通过不同的学习地点以统一的方式输入和存储临床研究的数据。因此，该方法包括生成用于临床研究的数据输入的输入平台程序，输入平台分配到输入位置，根据参与者特征与调查参与者的联系来调用和激活输入平台程序临床研究，通过输入平台程序生成的输入平台在输入位置输入数据，并存储输入数据。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式