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11. 发明授权

US10416258B2 Controlling magnetic resonance systems 有权
公开(公告)号：US10416258B2
公开(公告)日：2019-09-17
申请号：US13856231
申请日：2013-04-03
申请人： Hans Peter Fautz , Rene Gumbrecht
发明人： Hans Peter Fautz , Rene Gumbrecht
IPC分类号： G01R33/54 , G01R33/483 , G01R33/565 , G01R33/3415
摘要： A method for controlling a magnetic resonance system outputs a pulse sequence including a first slice-selective excitation pulse that excites a first slice with a first magnetization. The pulse sequence includes a second slice-selective excitation pulse that excites a second slice with the first magnetization and a third slice-selective excitation pulse that excites the first slice with a second magnetization that cancels the first magnetization. The pulse sequence also includes and a fourth slice-selective excitation pulse that excites the second slice with a magnetization that cancels the first magnetization. The first slice and the second slice intersect.

12. 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.

13. 发明申请

US20140132262A1 Method and Apparatus for SAR Reduction Using B0 Specific RF Excitation 有权
标题翻译：使用B0特定RF激励的SAR减少的方法和装置
公开(公告)号：US20140132262A1
公开(公告)日：2014-05-15
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： G01R33/36
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.
摘要翻译：提供了一种用于产生用于磁共振成像用试样的预定层中的核自旋激发的射频（RF）脉冲的方法和用于执行该方法的磁共振成像装置。该方法包括确定测量体积中的磁场的变化，并且确定RF脉冲的频谱频率分布。具有频谱分布的RF脉冲被配置为激发样品中的核自旋。在基本上最小的能量含量的边界条件下，核自旋在测量体积中以预定翻转角的磁场进行极化。该方法还包括以定义的频谱分布产生RF脉冲。

14. 发明授权

US09739859B2 Method and control device to control a magnetic resonance system 有权
公开(公告)号：US09739859B2
公开(公告)日：2017-08-22
申请号：US14026291
申请日：2013-09-13
申请人： Theresa Bachschmidt , Hans-Peter Fautz , Rene Gumbrecht , Dominik Paul
发明人： Theresa Bachschmidt , Hans-Peter Fautz , Rene Gumbrecht , Dominik Paul
IPC分类号： G01R33/48 , G01R33/483
CPC分类号： G01R33/4828 , G01R33/4833
摘要： A method and control device operate a magnetic resonance system in order to execute a first pulse sequence that includes an excitation phase and an acquisition phase. In the excitation phase, a first gradient is applied in a gradient direction to generate a spatially dependent basic magnetic field. A selective radio-frequency excitation pulse is executed, wherein the selective radio-frequency excitation pulse excites a first material and does not excite a second material in a first partial region of an examination volume, and wherein the selective radio-frequency excitation pulse does not excite the first material and excites the second material in a second partial region of the examination volume. In the acquisition phase, non-selective refocusing pulses are executed in order to acquire raw data of the first and second partial region of the examination volume, which acquisition is spatially coded along the gradient direction.

15. 发明申请

US20130221962A1 METHOD FOR DETERMINING AN ACTIVATION SEQUENCE FOR A MAGNETIC RESONANCE DEVICE 审中-公开
标题翻译：用于确定磁共振装置的激活序列的方法
公开(公告)号：US20130221962A1
公开(公告)日：2013-08-29
申请号：US13593322
申请日：2012-08-23
申请人： Hans-Peter Fautz , Rene Gumbrecht
发明人： Hans-Peter Fautz , Rene Gumbrecht
IPC分类号： G01R33/44
CPC分类号： G01R33/44 , G01R33/5612
摘要： A method for determining an activation sequence for a magnetic resonance device is provided. The activation sequence includes single pulses to be emitted simultaneously for a plurality of individually activatable high-frequency transmission channels. The method includes determining an amplitude and a phase of a plurality of square-wave subpulses, of which the single pulse is composed, by a pulse optimization method for a predefined target magnetization for each of the single pulses. The method also includes determining optimized, layer-selective subpulses for each square-wave subpulse of the plurality of square-wave subpulses while retaining phase and integral of the square-wave subpulse with regard to a bandwidth of the plurality of square-wave subpulses and/or the quality of a profile of a layer to be excited.
摘要翻译：提供了一种用于确定磁共振装置的激活顺序的方法。激活序列包括为多个可独立激活的高频传输信道同时发射的单个脉冲。该方法包括通过针对每个单个脉冲的预定目标磁化的脉冲优化方法来确定组成单个脉冲的多个方波子脉冲的幅度和相位。该方法还包括为多个方波子脉冲的每个方波子脉冲确定优化的层选择性子脉冲，同时保持方波子脉冲相对于多个方波子脉冲的带宽的相位和积分， /或要兴奋的层的轮廓的质量。

16. 发明申请

US20140077802A1 METHOD AND CONTROL DEVICE TO CONTROL A MAGNETIC RESONANCE SYSTEM 有权
标题翻译：用于控制磁共振系统的方法和控制装置
公开(公告)号：US20140077802A1
公开(公告)日：2014-03-20
申请号：US14026291
申请日：2013-09-13
申请人： Theresa Bachschmidt , Hans-Peter Fautz , Rene Gumbrecht , Dominik Paul
发明人： Theresa Bachschmidt , Hans-Peter Fautz , Rene Gumbrecht , Dominik Paul
IPC分类号： G01R33/48
CPC分类号： G01R33/4828 , G01R33/4833
摘要： A method and control device operate a magnetic resonance system in order to execute a first pulse sequence that includes an excitation phase and an acquisition phase. In the excitation phase, a first gradient is applied in a gradient direction to generate a spatially dependent basic magnetic field. A selective radio-frequency excitation pulse is executed, wherein the selective radio-frequency excitation pulse excites a first material and does not excite a second material in a first partial region of an examination volume, and wherein the selective radio-frequency excitation pulse does not excite the first material and excites the second material in a second partial region of the examination volume. In the acquisition phase, non-selective refocusing pulses are executed in order to acquire raw data of the first and second partial region of the examination volume, which acquisition is spatially coded along the gradient direction.
摘要翻译：方法和控制装置操作磁共振系统以便执行包括激励相位和采集阶段的第一脉冲序列。在激励阶段，沿梯度方向施加第一梯度以产生空间依赖的基本磁场。执行选择性射频激励脉冲，其中选择性射频激励脉冲激发第一材料并且不在检查体积的第一部分区域中激发第二材料，并且其中选择性射频激励脉冲不激发第一材料并在检查体积的第二部分区域中激发第二材料。在采集阶段，执行非选择性重聚焦脉冲，以获取检查卷的第一和第二部分区域的原始数据，该采集沿梯度方向进行空间编码。

17. 发明申请

US20130257427A1 Determining a Magnetic Resonance System Control Sequence 审中-公开
标题翻译：确定磁共振系统控制序列
公开(公告)号：US20130257427A1
公开(公告)日：2013-10-03
申请号：US13854064
申请日：2013-03-30
申请人： Hans-Peter Fautz , Rene Gumbrecht
发明人： Hans-Peter Fautz , Rene Gumbrecht
IPC分类号： G01R33/54
CPC分类号： G01R33/543 , G01R33/5612
摘要： A method and a control sequence determination device are provided for determining a magnetic resonance control sequence that includes a multichannel pulse train with a number of individual RF pulse trains sent out in parallel by a magnetic resonance system over different independent radio-frequency transmit channels. The multichannel pulse train is calculated based on a predetermined target function with a predetermined target magnetization in an RF pulse optimization method. The RF pulse optimization method takes account of the magnetization in the form of a non-linear equation and of a local radio-frequency load and in a plurality of volume elements in the form of quadratic equation systems.
摘要翻译：提供了一种方法和控制顺序确定装置，用于确定磁共振控制序列，该磁共振控制序列包括具有多个单独的RF脉冲序列的多通道脉冲串，所述多个脉冲序列通过磁共振系统在不同的独立的射频发射信道上并行发送。基于在RF脉冲优化方法中具有预定目标磁化强度的预定目标函数来计算多通道脉冲串。 RF脉冲优化方法考虑了非线性方程式和局部射频负载形式的磁化，以及二次方程式形式的多个体积元素。

18. 发明授权

US09052373B2 Method and device for determining a magnetic resonance system activation sequence 有权
标题翻译：用于确定磁共振系统激活序列的方法和装置
公开(公告)号：US09052373B2
公开(公告)日：2015-06-09
申请号：US13429223
申请日：2012-03-23
申请人： Hans-Peter Fautz , Rene Gumbrecht
发明人： Hans-Peter Fautz , Rene Gumbrecht
IPC分类号： G01V3/00 , G01R33/565 , G01R33/46 , G01R33/561
CPC分类号： G01R33/5659 , G01R33/4616 , G01R33/5612
摘要： A method and control a sequence determination device for determining a magnetic resonance system-activation sequence are provided. The magnetic resonance system-activation sequence includes a multichannel pulse having a plurality of individual HF pulses to be emitted in a parallel manner by the magnetic resonance system by way of different independent high-frequency transmit channels. A multichannel pulse is calculated based on a predefined MR excitation quality using an HF pulse optimization method, and an HF pulse length is optimized with respect to an HF energy parameter.
摘要翻译：提供了一种方法和控制用于确定磁共振系统激活序列的序列确定装置。磁共振系统激活序列包括多通道脉冲，其具有通过不同的独立高频发射通道由磁共振系统以并行方式发射的多个单独的HF脉冲。基于使用HF脉冲优化方法的预定MR激励质量来计算多通道脉冲，并且相对于HF能量参数优化HF脉冲长度。

19. 发明申请

US20130265049A1 Controlling Magnetic Resonance Systems 审中-公开
标题翻译：控制磁共振系统
公开(公告)号：US20130265049A1
公开(公告)日：2013-10-10
申请号：US13856231
申请日：2013-04-03
申请人： Hans Peter Fautz , Rene Gumbrecht
发明人： Hans Peter Fautz , Rene Gumbrecht
IPC分类号： G01R33/54
CPC分类号： G01R33/543 , G01R33/3415 , G01R33/4833 , G01R33/4836 , G01R33/5659
摘要： A method for controlling a magnetic resonance system outputs a pulse sequence including a first slice-selective excitation pulse that excites a first slice with a first magnetization. The pulse sequence includes a second slice-selective excitation pulse that excites a second slice with the first magnetization and a third slice-selective excitation pulse that excites the first slice with a second magnetization that cancels the first magnetization. The pulse sequence also includes and a fourth slice-selective excitation pulse that excites the second slice with a magnetization that cancels the first magnetization. The first slice and the second slice intersect.
摘要翻译：用于控制磁共振系统的方法输出包括以第一磁化激励第一切片的第一切片选择激励脉冲的脉冲序列。脉冲序列包括激发具有第一磁化的第二切片的第二切片选择性激励脉冲和以抵消第一磁化的第二磁化激发第一切片的第三切片选择激励脉冲。脉冲序列还包括第四切片选择性激励脉冲，其以消除第一磁化的磁化激发第二切片。第一个切片和第二个切片相交。

20. 发明申请

US20120268130A1 METHOD AND DEVICE FOR DETERMINING A MAGNETIC RESONANCE SYSTEM ACTIVATION SEQUENCE 有权
标题翻译：用于确定磁共振系统激活序列的方法和装置
公开(公告)号：US20120268130A1
公开(公告)日：2012-10-25
申请号：US13429223
申请日：2012-03-23
申请人： Hans-Peter Fautz , Rene Gumbrecht
发明人： Hans-Peter Fautz , Rene Gumbrecht
IPC分类号： G01R33/28
CPC分类号： G01R33/5659 , G01R33/4616 , G01R33/5612
摘要： A method and control a sequence determination device for determining a magnetic resonance system-activation sequence are provided. The magnetic resonance system-activation sequence includes a multichannel pulse having a plurality of individual HF pulses to be emitted in a parallel manner by the magnetic resonance system by way of different independent high-frequency transmit channels. A multichannel pulse is calculated based on a predefined MR excitation quality using an HF pulse optimization method, and an HF pulse length is optimized with respect to an HF energy parameter.
摘要翻译：提供了一种方法和控制用于确定磁共振系统激活序列的序列确定装置。磁共振系统激活序列包括多通道脉冲，其具有通过不同的独立高频发射通道由磁共振系统以并行方式发射的多个单独的HF脉冲。基于使用HF脉冲优化方法的预定MR激励质量来计算多通道脉冲，并且相对于HF能量参数优化HF脉冲长度。

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