公开(公告)号：US20090192382A1

公开(公告)日：2009-07-30

申请号：US12358378

申请日：2009-01-23

申请人： Juergen Nistler ,  Wolfgang Renz ,  Thorsten Speckner

发明人： Juergen Nistler ,  Wolfgang Renz ,  Thorsten Speckner

IPC分类号： A61B5/055 ,  G01V3/00 ,  H01P11/00

CPC分类号： G01R33/34046 ,  G01R33/3415 ,  G01R33/3678 ,  G01R33/5659 ,  Y10T29/49016

摘要： A magnetic resonance system obtaining magnetic resonance exposures of an examination subject, has an examination tunnel, a whole-body antenna with two connection terminals. The whole-body antenna cylindrically extends around the examination tunnel along a longitudinal axis. The system has a radio-frequency supply device in order to respectively supply the whole-body antenna with radio-frequency signals for emission of a radio-frequency field in the examination tunnel. The radio-frequency supply device has a radio-frequency generator for generation of a radio-frequency signal, a signal splitter that divides a radio-frequency signal coming from the radio-frequency generator into two partial signals that are phase-shifted by 90° relative to one another. Two radio-frequency feed lines are connected with the two connection terminals of the whole-body antenna. Via these radio-frequency feed lines, the two partial signals are fed into the whole-body antenna. The whole-body antenna has an intrinsic transmission characteristic such that a radio-frequency field is emitted that is elliptically polarized in a defined manner in a plane lying perpendicular to the longitudinal axis (at least in the unloaded state of the examination tunnel).

摘要翻译： 获得检查对象的磁共振曝光的磁共振系统具有检查隧道，具有两个连接端子的全身天线。 全身天线沿着纵向轴线围绕检查隧道圆周延伸。 该系统具有射频供给装置，以分别向全身天线提供用于在检查隧道中发射射频场的射频信号。 射频供给装置具有用于产生射频信号的射频发生器，将来自射频发生器的射频信号分割为相移90°的两个部分信号的信号分离器 相对于彼此。 两根射频馈线与全身天线的两个连接端子连接。 通过这些射频馈线，两个部分信号被馈送到全身天线。 全身天线具有固有的传输特性，使得在垂直于纵向轴线的平面中（至少在检查隧道的无负载状态）中以限定的方式发射出被椭圆偏振的射频场。

公开(公告)号：US08362775B2

公开(公告)日：2013-01-29

申请号：US12358378

申请日：2009-01-23

申请人： Juergen Nistler ,  Wolfgang Renz ,  Thorsten Speckner

发明人： Juergen Nistler ,  Wolfgang Renz ,  Thorsten Speckner

IPC分类号： G01V3/00 ,  A61B5/055

CPC分类号： G01R33/34046 ,  G01R33/3415 ,  G01R33/3678 ,  G01R33/5659 ,  Y10T29/49016

摘要： A magnetic resonance system obtaining magnetic resonance exposures of an examination subject, has an examination tunnel, a whole-body antenna with two connection terminals. The whole-body antenna cylindrically extends around the examination tunnel along a longitudinal axis. The system has a radio-frequency supply device in order to respectively supply the whole-body antenna with radio-frequency signals for emission of a radio-frequency field in the examination tunnel. The radio-frequency supply device has a radio-frequency generator for generation of a radio-frequency signal, a signal splitter that divides a radio-frequency signal coming from the radio-frequency generator into two partial signals that are phase-shifted by 90° relative to one another. Two radio-frequency feed lines are connected with the two connection terminals of the whole-body antenna. Via these radio-frequency feed lines, the two partial signals are fed into the whole-body antenna. The whole-body antenna has an intrinsic transmission characteristic such that a radio-frequency field is emitted that is elliptically polarized in a defined manner in a plane lying perpendicular to the longitudinal axis (at least in the unloaded state of the examination tunnel).

摘要翻译： 获得检查对象的磁共振曝光的磁共振系统具有检查隧道，具有两个连接端子的全身天线。 全身天线沿着纵向轴线围绕检查隧道圆周延伸。 该系统具有射频供给装置，以分别向全身天线提供用于在检查隧道中发射射频场的射频信号。 射频供给装置具有用于产生射频信号的射频发生器，将来自射频发生器的射频信号分割为相移90°的两个部分信号的信号分离器 相对于彼此。 两根射频馈线与全身天线的两个连接端子连接。 通过这些射频馈线，两个部分信号被馈送到全身天线。 全身天线具有固有的传输特性，使得在垂直于纵向轴线的平面中（至少在检查隧道的无负载状态）中以限定的方式发射出被椭圆偏振的射频场。

公开(公告)号：US09547064B2

公开(公告)日：2017-01-17

申请号：US13645093

申请日：2012-10-04

申请人： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

发明人： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

IPC分类号： G01R33/54 ,  G01R33/341 ,  G01R33/58

CPC分类号： G01R33/583 ,  G01R33/341

摘要： A method for the control of a magnetic resonance system is provided. In a test phase before a magnetic resonance measurement, a test high-frequency pulse with several parallel individual high-frequency pulses is transmitted with a transmitter antenna arrangement over various different high-frequency transmitter channels. At lower transmitter power, the test high-frequency pulse generates essentially the same field distribution as an excitation high-frequency pulse to be transmitted during a subsequent magnetic resonance measurement. A high-frequency field generated by this test high-frequency pulse is measured in at least one area of a local pulse arrangement, and on the basis of the high-frequency field measured, a high-frequency field value that is to be anticipated at the local coil arrangement during the subsequent magnetic resonance measurement is determined. The control of the magnetic resonance system during a later magnetic resonance measurement includes taking the high-frequency field value into account.

摘要翻译： 提供了一种用于控制磁共振系统的方法。 在磁共振测量之前的测试阶段，具有几个并联的单个高频脉冲的测试高频脉冲通过各种不同的高频发射机通道上的发射机天线布置发射。 在较低的发射机功率下，测试高频脉冲产生与随后的磁共振测量期间传输的激发高频脉冲基本相同的场分布。 由本测试高频脉冲产生的高频场是在局部脉冲布置的至少一个区域中测量的，并且基于所测量的高频场，测量在高频场中预期的高频场值 在随后的磁共振测量期间确定局部线圈布置。 在后来的磁共振测量中，磁共振系统的控制包括考虑高频场值。

公开(公告)号：US20130082707A1

公开(公告)日：2013-04-04

申请号：US13645093

申请日：2012-10-04

申请人： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

发明人： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

IPC分类号： G01R33/54 ,  G01R33/341

CPC分类号： G01R33/583 ,  G01R33/341

摘要： A method for the control of a magnetic resonance system is provided. In a test phase before a magnetic resonance measurement, a test high-frequency pulse with several parallel individual high-frequency pulses is transmitted with a transmitter antenna arrangement over various different high-frequency transmitter channels. At lower transmitter power, the test high-frequency pulse generates essentially the same field distribution as an excitation high-frequency pulse to be transmitted during a subsequent magnetic resonance measurement. A high-frequency field generated by this test high-frequency pulse is measured in at least one area of a local pulse arrangement, and on the basis of the high-frequency field measured, a high-frequency field value that is to be anticipated at the local coil arrangement during the subsequent magnetic resonance measurement is determined. The control of the magnetic resonance system during a later magnetic resonance measurement includes taking the high-frequency field value into account.

摘要翻译： 提供了一种用于控制磁共振系统的方法。 在磁共振测量之前的测试阶段，具有几个并联的单个高频脉冲的测试高频脉冲通过各种不同的高频发射机通道上的发射机天线布置发射。 在较低的发射机功率下，测试高频脉冲产生与随后的磁共振测量期间传输的激发高频脉冲基本相同的场分布。 由本测试高频脉冲产生的高频场是在局部脉冲布置的至少一个区域中测量的，并且基于所测量的高频场，测量在高频场中预期的高频场值 在随后的磁共振测量期间确定局部线圈布置。 在后来的磁共振测量中，磁共振系统的控制包括考虑高频场值。

公开(公告)号：US07663368B2

公开(公告)日：2010-02-16

申请号：US12018333

申请日：2008-01-23

申请人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

发明人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

IPC分类号： G01V3/00

CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/5659

摘要： An arrangement for radiation of a radio-frequency field into an examination subject has a local coil unit with a housing. An insulating dielectric material is embodied at least at one part of the housing in order to passively compensate an inhomogeneity of the B1 field that occurs in the examination subject. An adjustment arrangement allows for fixed but detachable provision of the insulating dielectric material at the housing part.

摘要翻译： 用于将射频场辐射到检查对象中的布置具有带壳体的局部线圈单元。 绝缘介电材料至少体现在壳体的一部分上，以便被动地补偿在检查对象中发生的B1场的不均匀性。 调节装置允许绝缘电介质材料在壳体部分固定但可拆卸地设置。

公开(公告)号：US20080180102A1

公开(公告)日：2008-07-31

申请号：US12018333

申请日：2008-01-23

申请人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

发明人： Razvan Lazar ,  Wolfgang Renz ,  Thorsten Speckner

IPC分类号： G01R33/34

CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/5659

摘要： An arrangement for radiation of a radio-frequency field into an examination subject has a local coil unit with a housing. An insulating dielectric material is embodied at least at one part of the housing in order to passively compensate an inhomogeneity of the B1 field that occurs in the examination subject. An adjustment arrangement allows for fixed but detachable provision of the insulating dielectric material at the housing part.

摘要翻译： 用于将射频场辐射到检查对象中的布置具有带壳体的局部线圈单元。 绝缘介电材料至少体现在壳体的一部分上，以便被动地补偿在检查对象中发生的B1场的不均匀性。 调节装置允许绝缘电介质材料在壳体部分固定但可拆卸地设置。

公开(公告)号：US20170205483A1

公开(公告)日：2017-07-20

申请号：US15407141

申请日：2017-01-16

申请人： Thorsten Feiweier ,  Andreas Greiser ,  Uvo Hölscher ,  Thorsten Speckner ,  David Grodzki ,  Mathias Nittka ,  Daniel Nico Splitthoff

发明人： Thorsten Feiweier ,  Andreas Greiser ,  Uvo Hölscher ,  Thorsten Speckner ,  David Grodzki ,  Mathias Nittka ,  Daniel Nico Splitthoff

IPC分类号： G01R33/54 ,  G01R33/28

摘要： A method for setting a MRI sequence, a magnetic resonance device, and a computer program product are provided. The method includes providing, by a limitation unit, at least one limitation; providing, by a parameter provision unit, a plurality of parameters of the sequence, wherein at least one parameter of the plurality of parameters is assigned to a default parameter value; selecting, by a selection unit, a parameter of the plurality of parameters; determining, by a simulation unit, at least one sequential pattern based on at least one default parameter value of the default parameter values; determining, by an analysis unit, a permissible range of parameter values of the selected parameter based on at least one sequential pattern and the at least one limitation; and establishing, by an establishment unit, a new parameter value of the selected parameter within the permissible range of the parameter values.

公开(公告)号：US09194926B2

公开(公告)日：2015-11-24

申请号：US13769315

申请日：2013-02-16

申请人： Peter Dietz ,  Georg Pirkl ,  Thorsten Speckner

发明人： Peter Dietz ,  Georg Pirkl ,  Thorsten Speckner

IPC分类号： G01R33/54 ,  G01R33/385

CPC分类号： G01R33/54 ,  G01R33/3854

摘要： A method for operating a coil, through which a varying current flows, is provided. Mechanical resonance responses of the coil are recorded and are modeled by an electrical resonant circuit model. A check is made as to whether a varying current that is to be sent through the coil evokes a resonant response in the electrical resonant circuit model. The current flow through the coil is blocked if the resonant response exceeds a predefined limit value.

摘要翻译： 提供了用于操作流过变流的线圈的方法。 记录线圈的机械共振响应，并通过电谐振电路模型建模。 检查通过线圈发送的变化的电流是否在电谐振电路模型中引起谐振响应。 如果谐振响应超过预定极限值，则流过线圈的电流将被阻塞。

公开(公告)号：US20130320977A1

公开(公告)日：2013-12-05

申请号：US13906649

申请日：2013-05-31

申请人： Michael Koehler ,  Thorsten Speckner

发明人： Michael Koehler ,  Thorsten Speckner

IPC分类号： G01R33/32 ,  G01R33/44

CPC分类号： G01R33/32 ,  G01R33/246 ,  G01R33/44

摘要： In a magnetic resonance method and apparatus to determine a subject-specific B1 distribution of an examination subject in a measurement volume in the magnetic resonance apparatus, a first measurement data set of the examination subject is acquired using a first pulse sequence, a second measurement data set of the examination subject is acquired using a second pulse sequence, and a third measurement data set of the examination subject is acquired using a third pulse sequence. A first phase is determined from the first measurement data set, a second phase from the second measurement data set and a third phase from the third measurement data set. A relevant phase shift is calculated from the first phase, the second phase and the third phase, and the B1 distribution are determined from the calculated relevant phase shift.

摘要翻译： 在用于确定磁共振装置的测量体积中的检查对象的受试者特异性B1分布的磁共振方法和装置中，使用第一脉冲序列，第二测量数据获取检查对象的第一测量数据集 使用第二脉冲序列获取检查对象的集合，并且使用第三脉冲序列获取检查对象的第三测量数据集。 从第一测量数据集，第二测量数据集的第二阶段和第三测量数据集的第三阶段确定第一阶段。 从第一阶段，第二阶段和第三阶段计算相关的相移，并且从计算的相关相移确定B1分布。

公开(公告)号：US20130082705A1

公开(公告)日：2013-04-04

申请号：US13630258

申请日：2012-09-28

申请人： Wilfried Landschuetz ,  Thorsten Speckner

发明人： Wilfried Landschuetz ,  Thorsten Speckner

IPC分类号： G01R33/54 ,  G01R33/341

CPC分类号： G01R33/565 ,  A61B5/055 ,  G01R33/5617

摘要： A method for time synchronization of various components of a magnetic resonance system includes generating a series of amplitude-modulated radio-frequency pulses and associated gradient fields to deflect the magnetization of a slice detecting at least two spin signals, determining a phase difference between two of the spin signals, processing the phase difference in order to determine at least one time shift between two of the following variables that are generated by different components of the magnetic resonance system, an envelope of the amplitude-modulated radio-frequency pulses, a radio-frequency portion of the amplitude-modulated radio-frequency pulses, and one or more gradient fields, and synchronizing the associated components of the magnetic resonance system depending on the at least one time shift.

摘要翻译： 用于磁共振系统的各种部件的时间同步的方法包括产生一系列幅度调制的射频脉冲和相关联的梯度场以偏转检测至少两个自旋信号的切片的磁化，确定两个之间的相位差 自旋信号，处理相位差以便确定由磁共振系统的不同部件产生的以下两个变量之间的至少一个时移，调幅射频脉冲的包络， 幅度调制的射频脉冲的频率部分和一个或多个梯度场，并且根据至少一个时移来同步磁共振系统的相关分量。