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1. 发明授权

US10345399B2 Method and local coil system for producing a magnetic resonance radio frequency field 有权
公开(公告)号：US10345399B2
公开(公告)日：2019-07-09
申请号：US14245181
申请日：2014-04-04
申请人： Hans-Peter Fautz , Wolfgang Renz , Franz Schmitt
发明人： Hans-Peter Fautz , Wolfgang Renz , Franz Schmitt
IPC分类号： G01R33/28 , G01R33/34 , G01R33/36 , G01R33/3415
摘要： A magnetic resonance RF field is produced in a magnetic resonance imaging system that includes a main magnetic field apparatus and an object-bearing table movable relative to the main magnetic field apparatus and on which a local coil system is arranged. The local coil system includes a plurality of transmission elements. A current location of the object-bearing table relative to the main magnetic field apparatus is established. The transmission elements are automatically connected based on the current location of the object-bearing table.

2. 发明申请

US20150077108A1 Measurement of Radio Frequency Excitation Pulses 有权
标题翻译：射频激励脉冲的测量
公开(公告)号：US20150077108A1
公开(公告)日：2015-03-19
申请号：US14481596
申请日：2014-09-09
申请人： Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius , Rene Gumbrecht , Franz Schmitt
发明人： Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius , Rene Gumbrecht , Franz Schmitt
IPC分类号： G01R33/54 , G01R33/36
CPC分类号： G01R33/543 , G01R33/36 , G01R33/5659
摘要： The embodiments relate to methods for measurement of RF excitation pulses by a magnetic resonance device including the following acts: (1) sending of an RF excitation pulse by a radio-frequency system of the magnetic resonance device, (2) triggering of a receive event for capturing the RF excitation pulse by the control device of the magnetic resonance device, and (3) capturing of the sent RF excitation pulse in the form of excitation data by the radio frequency system. In certain embodiments, the excitation data is used for checking process execution sequences.
摘要翻译：实施例涉及通过磁共振装置测量RF激励脉冲的方法，包括以下动作：（1）通过磁共振装置的射频系统发送RF激励脉冲，（2）触发接收事件用于通过磁共振装置的控制装置捕获RF激励脉冲，以及（3）通过射频系统以激励数据的形式捕获发送的RF激励脉冲。在某些实施例中，激励数据用于检查过程执行序列。

3. 发明申请

US20140300355A1 Method and Local Coil System for Producing a Magnetic Resonance Radio Frequency Field 审中-公开
标题翻译：用于产生磁共振射频场的方法和局部线圈系统
公开(公告)号：US20140300355A1
公开(公告)日：2014-10-09
申请号：US14245181
申请日：2014-04-04
申请人： Hans-Peter Fautz , Wolfgang Renz , Franz Schmitt
发明人： Hans-Peter Fautz , Wolfgang Renz , Franz Schmitt
IPC分类号： G01R33/28
CPC分类号： G01R33/28 , G01R33/34046 , G01R33/3415 , G01R33/3664
摘要： A magnetic resonance RF field is produced in a magnetic resonance imaging system that includes a main magnetic field apparatus and an object-bearing table movable relative to the main magnetic field apparatus and on which a local coil system is arranged. The local coil system includes a plurality of transmission elements. A current location of the object-bearing table relative to the main magnetic field apparatus is established. The transmission elements are automatically connected based on the current location of the object-bearing table.
摘要翻译：在包括主磁场装置和可相对于主磁场装置移动的对象支承台的磁共振成像系统中产生磁共振RF场，并且配置有局部线圈系统。局部线圈系统包括多个传输元件。建立了对象承载台相对于主磁场装置的当前位置。传输元件根据对象承载台的当前位置自动连接。

4. 发明授权

US08427157B2 Method to determine a predetermined signal amplitude in MR measurements 有权
标题翻译：确定MR测量中预定信号幅度的方法
公开(公告)号：US08427157B2
公开(公告)日：2013-04-23
申请号：US12635165
申请日：2009-12-10
申请人： Hans-Peter Fautz , Franz Schmitt
发明人： Hans-Peter Fautz , Franz Schmitt
IPC分类号： G01V3/00 , A61B5/055
CPC分类号： G01R33/583 , G01R33/246 , G01R33/543
摘要： In a method and apparatus to determine a predetermined signal amplitude of an examination subject in an MR measurement in which multiple RF pulses are radiated into the examination subject in a pulse sequence in a pulse series with a repetition time TR that is smaller than the T2 times of the examination subject, a target magnetization is established for a predetermined point in time after radiation of the respective RF pulse for essentially all RF pulses from the pulse series, a target flip angle and a target phase are determined for different regions of the examination subject for essentially all RF pulses depending on the respective target magnetization, a respective amplitude and phase response is determined for essentially all RF pulses to generate the respective target magnetization after radiation of the respective RF pulse, and the RF pulses with the respective determined amplitude and phase response are radiated into the examination subject.
摘要翻译：在MR测量中确定检查对象的预定信号幅度的方法和装置中，其中多个RF脉冲以脉冲序列以脉冲序列辐射到检查对象中，其中重复时间TR小于T2次对于检查对象的不同区域，针对基本上所有来自脉冲序列的所有RF脉冲的辐射之后的预定时间点建立目标磁化，针对检查对象的不同区域确定目标翻转角和目标相位对于基本上所有的RF脉冲取决于相应的目标磁化，对于基本上所有的RF脉冲确定相应的幅度和相位响应，以在相应RF脉冲的辐射之后产生相应的目标磁化，并且具有相应确定的幅度和相位的RF脉冲回应被辐射到考试科目。

5. 发明申请

US20110172515A1 DYNAMIC CORRECTION OF HIGH FREQUENCY ADJUSTMENT DURING PARALLEL TRANSMISSION 审中-公开
标题翻译：并行传输期间高频调整的动态校正
公开(公告)号：US20110172515A1
公开(公告)日：2011-07-14
申请号：US12986828
申请日：2011-01-07
申请人： Hans-Peter Fautz , Franz Schmitt
发明人： Hans-Peter Fautz , Franz Schmitt
IPC分类号： A61B5/055
CPC分类号： G01R33/56 , G01R33/4833 , G01R33/5612 , G01R33/5659
摘要： The present embodiments relate to a system and a method for operating an imaging system, where a plurality of subvolumes of an examination volume of an examination object to be examined with the system is examined. The examination volume is assembled from the plurality of subvolumes, where to examine the subvolumes, at least one HF pulse is transmitted in each case. The at least one HF pulse is optimized for the subvolume that is to be examined therewith respect to specifications and basic conditions applicable for the subvolume.
摘要翻译：本实施例涉及一种用于操作成像系统的系统和方法，其中检查与该系统一起检查的检查对象的检查卷的多个子体积。检查体积从多个子体积组装，在哪里检查子体积，在每种情况下传输至少一个HF脉冲。对于要被检查的子体积，对于适用于子体积的规格和基本条件，至少一个HF脉冲进行了优化。

6. 发明申请

US20100141252A1 METHOD TO DETERMINE A PREDETERMINED SIGNAL AMPLITUDE IN MR MEASUREMENTS 有权
标题翻译：确定MR测量中预测信号振幅的方法
公开(公告)号：US20100141252A1
公开(公告)日：2010-06-10
申请号：US12635165
申请日：2009-12-10
申请人： Hans-Peter Fautz , Franz Schmitt
发明人： Hans-Peter Fautz , Franz Schmitt
IPC分类号： G01R33/44
CPC分类号： G01R33/583 , G01R33/246 , G01R33/543
摘要： In a method and apparatus to determine a predetermined signal amplitude of an examination subject in an MR measurement in which multiple RF pulses are radiated into the examination subject in a pulse sequence in a pulse series with a repetition time TR that is smaller than the T2 times of the examination subject, a target magnetization is established for a predetermined point in time after radiation of the respective RF pulse for essentially all RF pulses from the pulse series, a target flip angle and a target phase are determined for different regions of the examination subject for essentially all RF pulses depending on the respective target magnetization, a respective amplitude and phase response is determined for essentially all RF pulses to generate the respective target magnetization after radiation of the respective RF pulse, and the RF pulses with the respective determined amplitude and phase response are radiated into the examination subject.
摘要翻译：在MR测量中确定检查对象的预定信号幅度的方法和装置中，其中多个RF脉冲以脉冲序列以脉冲序列辐射到检查对象中，其中重复时间TR小于T2次对于检查对象的不同区域，针对基本上所有来自脉冲序列的所有RF脉冲的辐射之后的预定时间点建立目标磁化，针对检查对象的不同区域确定目标翻转角和目标相位对于基本上所有的RF脉冲取决于相应的目标磁化，对于基本上所有的RF脉冲确定相应的幅度和相位响应，以在相应RF脉冲的辐射之后产生相应的目标磁化，并且具有相应确定的幅度和相位的RF脉冲回应被辐射到考试科目。

7. 发明申请

US20140306708A1 Magnetic Resonance Apparatus with Group-by-Group Actuation of Transmission Antennas 审中-公开
标题翻译：传输天线群组驱动的磁共振装置
公开(公告)号：US20140306708A1
公开(公告)日：2014-10-16
申请号：US14250140
申请日：2014-04-10
申请人： Hans-Peter Fautz , Matthias Gebhardt , Franz Schmitt
发明人： Hans-Peter Fautz , Matthias Gebhardt , Franz Schmitt
IPC分类号： G01R33/36
CPC分类号： G01R33/36 , G01R33/288 , G01R33/34092
摘要： A magnetic resonance apparatus including transmission antennas that may be actuated in parallel by a control device of the magnetic resonance apparatus may be operated in a group mode. In the group mode, the transmission antennas are grouped into groups of transmission antennas. The actuation signals of transmission antennas within the respective group are in a respectively predefined relationship relative to one another. A respective group actuation signal for each of the groups of transmission antennas is prescribed for the control device by an operator. The control device carries out checks as to whether a group exposure value established based on the group actuation signals lies below a maximum admissible group exposure limit. If this is the case, the control device establishes the actuation signals for the individual transmission antennas based on the group actuation signals. If this is not the case, the control device carries out another measure.
摘要翻译：包括可由磁共振装置的控制装置并行致动的发送天线的磁共振装置可以以组模式操作。在组模式中，发送天线被分组成发送天线组。相应组内的发射天线的致动信号相对于彼此分别是预定义的关系。用于操作者的控制装置规定了用于发送天线组中的每一组的相应组致动信号。控制装置执行基于组致动信号建立的组曝光值是否在最大允许组暴露极限以下的检查。如果是这种情况，则控制装置基于组致动信号建立各个发送天线的致动信号。如果不是这样，则控制装置执行另一个测量。

8. 发明授权

US09864035B2 Measurement of radio frequency excitation pulses 有权
公开(公告)号：US09864035B2
公开(公告)日：2018-01-09
申请号：US14481596
申请日：2014-09-09
申请人： Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius , Rene Gumbrecht , Franz Schmitt
发明人： Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius , Rene Gumbrecht , Franz Schmitt
IPC分类号： G01V3/00 , G01R33/54 , G01R33/36 , G01R33/565
CPC分类号： G01R33/543 , G01R33/36 , G01R33/5659
摘要： Methods are provided for measurement of RF excitation pulses by a magnetic resonance device. The methods include the following acts: (1) sending of an RF excitation pulse by a radio-frequency system of the magnetic resonance device, (2) triggering of a receive event for capturing the RF excitation pulse by the control device of the magnetic resonance device, and (3) capturing of the sent RF excitation pulse in the form of excitation data by the radio frequency system. The excitation data may be used for checking process execution sequences.

9. 发明授权

US10135549B2 Operation of a transmission device of a magnetic resonance device 有权
公开(公告)号：US10135549B2
公开(公告)日：2018-11-20
申请号：US14251595
申请日：2014-04-12
申请人： Holger Adolf , Thomas Benner , Hans-Peter Fautz , Joerg Ulrich Fontius , Rene Gumbrecht
发明人： Holger Adolf , Thomas Benner , Hans-Peter Fautz , Joerg Ulrich Fontius , Rene Gumbrecht
IPC分类号： H04B17/00 , G01R33/36 , H04B17/12 , G01R33/561 , G01R33/58
摘要： A method for operating a transmission device of a magnetic resonance device is provided. In order to actuate coil elements of a radiofrequency coil with different phases, phase differences in a reference plane are taken into consideration. In a first calibration measurement to be performed once for each transmission path, a first phase of a transmitted radiofrequency signal is measured by an internal measuring device installed permanently in the transmission device spaced apart from the reference plane. A second phase of the transmitted radiofrequency signal is measured by a second, external measuring device to be connected to the reference plane for the first calibration measurement. At least one phase of the first phase and the second phase is taken into consideration in the phase-accurate actuating of the coil elements and/or for correcting further measurements with the internal measuring device.

10. 发明授权

US09709643B2 Method and apparatus for SAR reduction using B0 specific RF excitation 有权
公开(公告)号：US09709643B2
公开(公告)日：2017-07-18
申请号：US14076017
申请日：2013-11-08
申请人： Hans-Peter Fautz , Rene Gumbrecht
发明人： Hans-Peter Fautz , Rene Gumbrecht
IPC分类号： G01V3/00 , G01R33/28 , G01R33/483
CPC分类号： G01R33/288 , G01R33/4833
摘要： A method for generation of a radio-frequency (RF) pulse for excitation of nuclear spins in a predetermined layer of a specimen for magnetic resonance imaging and a magnetic resonance imaging device for performing the method are provided. The method includes determining a variation of a magnetic field in a measuring volume, and defining a spectral frequency distribution of the RF pulse. The RF pulse with the spectral frequency distribution is configured to excite nuclear spins in the specimen. The nuclear spins are polarized by the magnetic field at a predetermined flip angle in the measuring volume under a boundary condition of a substantially minimum energy content. The method also includes generating the RF pulse with the defined spectral frequency distribution.

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