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1. 发明授权

US10145918B2 Emission of high frequency pulses in a magnetic resonance tomography system 有权
公开(公告)号：US10145918B2
公开(公告)日：2018-12-04
申请号：US13784797
申请日：2013-03-04
申请人： Nikolaus Demharter , Klaus Huber , Claus Seisenberger , Thorsten Speckner , Markus Vester , Christian Wünsch
发明人： Nikolaus Demharter , Klaus Huber , Claus Seisenberger , Thorsten Speckner , Markus Vester , Christian Wünsch
IPC分类号： G01R33/54 , G01R33/36
摘要： A method for emitting a sequence of high frequency pulses that may have different envelopes in a magnetic resonance tomography system is provided. A digital instruction signal that specifies the envelope for the high frequency pulses that are to be emitted is received. A digital control signal is transmitted to a high frequency unit for generating high frequency pulses, depending on the instruction signal. A test signal that allows notification of a current overload situation is received. The current control signal is reduced if the test signal indicates an overload situation.

2. 发明申请

US20130229180A1 Emission of High Frequency Pulses in a Magnetic Resonance Tomography System 审中-公开
标题翻译：磁共振层析成像系统中高频脉冲的发射
公开(公告)号：US20130229180A1
公开(公告)日：2013-09-05
申请号：US13784797
申请日：2013-03-04
申请人： Nikolaus Demharter , Klaus Huber , Claus Seisenberger , Thorsten Speckner , Markus Vester , Christian Wünsch
发明人： Nikolaus Demharter , Klaus Huber , Claus Seisenberger , Thorsten Speckner , Markus Vester , Christian Wünsch
IPC分类号： G01R33/54
CPC分类号： G01R33/543 , G01R33/3614
摘要： A method for emitting a sequence of high frequency pulses that may have different envelopes in a magnetic resonance tomography system is provided. A digital instruction signal that specifies the envelope for the high frequency pulses that are to be emitted is received. A digital control signal is transmitted to a high frequency unit for generating high frequency pulses, depending on the instruction signal. A test signal that allows notification of a current overload situation is received. The current control signal is reduced if the test signal indicates an overload situation.
摘要翻译：提供了一种在磁共振断层摄影系统中发射可能具有不同包络的高频脉冲序列的方法。接收指定要发射的高频脉冲的包络的数字指令信号。根据指示信号，数字控制信号被发送到用于产生高频脉冲的高频单元。接收允许通知当前过载情况的测试信号。如果测试信号表示过载情况，则电流控制信号减小。

3. 发明申请

US20130221965A1 B1 Field-Based Regulation Within a Sequence for NMR 有权
标题翻译：在NMR序列内的B1场调控
公开(公告)号：US20130221965A1
公开(公告)日：2013-08-29
申请号：US13781199
申请日：2013-02-28
申请人： Jürgen Nistler , David Andrew Porter , Thorsten Speckner , Christian Wünsch
发明人： Jürgen Nistler , David Andrew Porter , Thorsten Speckner , Christian Wünsch
IPC分类号： G01R33/58
CPC分类号： G01R33/586 , G01R33/36 , G01R33/5659
摘要： A B1 magnetic field may be regulated during a magnetic resonance tomography (MRT) imaging sequence.
摘要翻译：可以在磁共振断层摄影（MRT）成像序列期间调节B1磁场。

4. 发明授权

US09989617B2 B1 field-based regulation within a sequence for NMR 有权
公开(公告)号：US09989617B2
公开(公告)日：2018-06-05
申请号：US13781199
申请日：2013-02-28
申请人： Jürgen Nistler , David Andrew Porter , Thorsten Speckner , Christian Wünsch
发明人： Jürgen Nistler , David Andrew Porter , Thorsten Speckner , Christian Wünsch
IPC分类号： G01R33/58 , G01R33/565 , G01R33/36
CPC分类号： G01R33/586 , G01R33/36 , G01R33/5659
摘要： A B1 magnetic field may be regulated during a magnetic resonance tomography (MRT) imaging sequence.

5. 发明申请

US20170205483A1 METHODS FOR SETTING A MRI SEQUENCE 有权
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.

6. 发明授权

US09194926B2 Method for operating a coil and a monitoring module 有权
标题翻译：操作线圈和监控模块的方法
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。

7. 发明申请

US20130320977A1 METHOD AND APPARATUS TO DETERMINE A SUBJECT-SPECIFIC B1 DISTRIBUTION OF AN EXAMINATION SUBJECT IN A MEASUREMENT VOLUME OF A MAGNETIC RESONANCE APPARATUS 有权
标题翻译：用于确定磁共振装置的测量体积中的检查对象的主要特定B1分布的方法和装置
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。

8. 发明申请

US20130082705A1 MAGNETIC RESONANCE SYSTEM AND METHOD FOR TIME SYNCHRONIZATION OF DIFFERENT COMPONENTS OF A MAGNETIC RESONANCE SYSTEM 有权
标题翻译：磁共振系统和磁共振系统的不同组件的时间同步化的磁共振系统和方法
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。

9. 发明申请

US20110187367A1 METHOD AND MAGNETIC RESONANCE SYSTEM TO REDUCE DISTORTIONS IN DIFFUSION IMAGING 有权
标题翻译：方法和磁共振系统减少扩散成像中的失真
公开(公告)号：US20110187367A1
公开(公告)日：2011-08-04
申请号：US13020302
申请日：2011-02-03
申请人： Thorsten Feiweier , Stefan Huwer , Tony Hyun Kim , David Andrew Porter , Thorsten Speckner
发明人： Thorsten Feiweier , Stefan Huwer , Tony Hyun Kim , David Andrew Porter , Thorsten Speckner
IPC分类号： G01R33/44
CPC分类号： G01R33/44
摘要： In a method and magnetic resonance apparatus to reduce distortions in magnetic resonance diffusion imaging, a magnetic resonance data acquisition system is operated to acquire magnetic resonance data in a first measurement with a first diffusion weighting, and to acquire magnetic resonance data in a second measurement with a second, different diffusion weighting. A non-linear, system-specific distortion-correcting function is determined on the basis of system-specific information that is specific to said magnetic resonance data acquisition system. Correction parameters are calculated to correct distortions in subsequently-acquired diffusion-weighted magnetic resonance images, based on the data acquired in the first and second measurements with the system-specific distortion-correcting function applied thereto. The subsequently-acquired diffusion-weighted magnetic resonance images are corrected using the correction parameters to at least reduce distortions therein.
摘要翻译：在减小磁共振扩散成像中的失真的方法和磁共振装置中，磁共振数据采集系统被操作以在具有第一扩散加权的第一测量中采集磁共振数据，并且在第二测量中采集磁共振数据，第二个不同的扩散加权。基于特定于所述磁共振数据采集系统的系统特定信息来确定非线性系统特定的失真校正功能。基于在第一和第二测量中采集的数据与应用于其的系统特定的失真校正功能，计算校正参数以校正随后获取的扩散加权磁共振图像中的失真。使用校正参数来校正后续获取的扩散加权磁共振图像，以至少减少其中的失真。

10. 发明申请

US20090146657A1 Method for processing a distortion-corrected 2d or 3d reconstruction image recorded by a magnetic resonance device 有权
标题翻译：用于处理由磁共振装置记录的失真校正的2d或3d重建图像的方法
公开(公告)号：US20090146657A1
公开(公告)日：2009-06-11
申请号：US11989243
申请日：2006-07-13
申请人： Franz Hebrank , Thorsten Speckner , Axel vom Endt
发明人： Franz Hebrank , Thorsten Speckner , Axel vom Endt
IPC分类号： G01R33/565 , G06K9/40
CPC分类号： G01R33/56518
摘要： In one embodiment of the present invention, a method for processing a 2D or 3D reconstruction image is disclosed which is recorded by a magnetic resonance device, including a gradient coil that generates a gradient field, and is distortion—corrected with regard to a given non-linearity—leading to an image distortion—of the gradient field using an algorithm that processes the measurement signals at different measurement points lying in the imaging volume, which algorithm, with respect to each signal processed by it, processes the first input value describing the real gradient field given at the real measurement point of the signal, in which method, for inverse transformation of the distortion-corrected reconstruction image into a distortion-uncorrected reconstruction image, use is made of the first algorithm or a second algorithm corresponding to the first algorithm, which, with respect to each signal processed by it, is given as second input value such a value which describes a fictitious gradient field at the respective distorted measurement point at which the processed signal appears, which is increased or decreased by the non-linear field component of the real gradient field compared with the linear ideal gradient field.
摘要翻译：在本发明的一个实施例中，公开了一种用于处理2D或3D重建图像的方法，其由磁共振装置记录，所述磁共振装置包括产生梯度场的梯度线圈，并且对于给定非对称 - 使用处理在成像体积中的不同测量点处的测量信号的算法，导致梯度场的图像失真，该算法相对于由其处理的每个信号处理描述第一输入值的第一输入值在该信号的实际测量点处给出的实际梯度场，其中用于将失真校正的重建图像逆变换为失真未校正的重建图像，使用第一算法或对应于第一算法的第二算法算法，其对于由其处理的每个信号，被给予为第二输入值，例如描述虚构的值在经过处理的信号出现的相应变形的测量点处，与线性理想梯度场相比，实际梯度场的非线性场分量增加或减小。

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