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1. 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.

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. 发明授权

US09488713B2 Automatic HF shim configuration for coils 有权
标题翻译：线圈自动HF垫片配置
公开(公告)号：US09488713B2
公开(公告)日：2016-11-08
申请号：US13956318
申请日：2013-07-31
申请人： Rene Gumbrecht , Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius
发明人： Rene Gumbrecht , Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius
IPC分类号： G01R33/36 , G01R33/565 , G01R33/24 , G01R33/561
CPC分类号： G01R33/5659 , G01R33/246 , G01R33/3607 , G01R33/5612
摘要： In order to configure a transmission coil of a magnetic resonance imaging (MRI) system without taking a specific measurement object into account, the transmission coil is automatically detected and identified when the transmission coil is connected to the MRI system. A phase setting of a pulse to be transmitted by the detected transmission coil is identified based on at least the identified type of the transmission coil. The transmission coil is excited with the pulse having the identified phase and amplitude.
摘要翻译：为了构成磁共振成像（MRI）系统的传输线圈而不考虑特定的测量对象，当传输线圈连接到MRI系统时，传输线圈被自动检测和识别。至少基于所识别的发送线圈类型来识别由所检测的发送线圈发送的脉冲的相位设定。传输线圈被激发具有所识别的相位和幅度的脉冲。

4. 发明授权

US09625541B2 Safety tests for systems monitoring local SAR 有权
公开(公告)号：US09625541B2
公开(公告)日：2017-04-18
申请号：US13933083
申请日：2013-07-01
申请人： Jörg Ulrich Fontius , Holger Adolf , Thomas Benner , Hans-Peter Fautz , Matthias Gebhardt , Rene Gumbrecht
发明人： Jörg Ulrich Fontius , Holger Adolf , Thomas Benner , Hans-Peter Fautz , Matthias Gebhardt , Rene Gumbrecht
IPC分类号： G01V3/00 , G01R33/28 , G01R33/36
CPC分类号： G01R33/288 , G01R33/36
摘要： In order to provide online monitoring of local specific absorption rate (SAR) within a body subject to a magnetic resonance imaging (MRI) scan, directional couplers measure a phase and an amplitude of a transmission radio frequency (RF) pulse generated and transmitted by an MRI system. A measured local SAR value is calculated based on the measured phase and the measured amplitude of the transmission RF pulse using a voxel model of the body and an electromagnetic (EM) simulation. In order to verify proper operation of the local SAR monitoring, the measured local SAR value is compared to a predetermined local SAR value.

5. 发明申请

US20150002147A1 Safety Tests for Systems Monitoring Local SAR 有权
标题翻译：系统监控局域SAR的安全测试
公开(公告)号：US20150002147A1
公开(公告)日：2015-01-01
申请号：US13933083
申请日：2013-07-01
申请人： Jörg Ulrich Fontius , Holger Adolf , Thomas Benner , Hans-Peter Fautz , Matthias Gebhardt , Rene Gumbrecht
发明人： Jörg Ulrich Fontius , Holger Adolf , Thomas Benner , Hans-Peter Fautz , Matthias Gebhardt , Rene Gumbrecht
IPC分类号： G01R35/00 , G01R33/28 , G01R33/20
CPC分类号： G01R33/288 , G01R33/36
摘要： In order to provide online monitoring of local specific absorption rate (SAR) within a body subject to a magnetic resonance imaging (MRI) scan, directional couplers measure a phase and an amplitude of a transmission radio frequency (RF) pulse generated and transmitted by an MRI system. A measured local SAR value is calculated based on the measured phase and the measured amplitude of the transmission RF pulse using a voxel model of the body and an electromagnetic (EM) simulation. In order to verify proper operation of the local SAR monitoring, the measured local SAR value is compared to a predetermined local SAR value.
摘要翻译：为了提供在经受磁共振成像（MRI）扫描的身体内的局部比吸收率（SAR）的在线监测，定向耦合器测量由一个或多个磁共振成像（MRI）生成和传输的传输射频（RF）脉冲的相位和幅度 MRI系统。基于使用身体的体素模型和电磁（EM）模拟的测量相位和传输RF脉冲的测量幅度来计算测量的局部SAR值。为了验证局部SAR监测的正确操作，将测量的局部SAR值与预定的局部SAR值进行比较。

6. 发明申请

US20150022203A1 Automatic HF Shim Configuration for Coils 有权
标题翻译：线圈自动HF垫圈配置
公开(公告)号：US20150022203A1
公开(公告)日：2015-01-22
申请号：US13956318
申请日：2013-07-31
申请人： Rene Gumbrecht , Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius
发明人： Rene Gumbrecht , Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius
IPC分类号： G01R33/36
CPC分类号： G01R33/5659 , G01R33/246 , G01R33/3607 , G01R33/5612
摘要： In order to configure a transmission coil of a magnetic resonance imaging (MRI) system without taking a specific measurement object into account, the transmission coil is automatically detected and identified when the transmission coil is connected to the MRI system. A phase setting of a pulse to be transmitted by the detected transmission coil is identified based on at least the identified type of the transmission coil. The transmission coil is excited with the pulse having the identified phase and amplitude.
摘要翻译：为了构成磁共振成像（MRI）系统的传输线圈而不考虑特定的测量对象，当传输线圈连接到MRI系统时，传输线圈被自动检测和识别。至少基于所识别的发送线圈类型来识别由所检测的发送线圈发送的脉冲的相位设定。传输线圈被激发具有所识别的相位和幅度的脉冲。

7. 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.

8. 发明申请

US20140307764A1 Operation of a Transmission Device of a Magnetic Resonance Device 审中-公开
标题翻译：磁共振装置的传输装置的操作
公开(公告)号：US20140307764A1
公开(公告)日：2014-10-16
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
CPC分类号： H04B17/12 , G01R33/3607 , G01R33/5612 , G01R33/586
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.
摘要翻译：提供了一种用于操作磁共振装置的传输装置的方法。为了激励具有不同相位的射频线圈的线圈元件，考虑到参考平面中的相位差。在对于每个传输路径执行一次的第一校准测量中，通过永久安装在与参考平面间隔开的传输设备中的内部测量设备测量发射的射频信号的第一相位。发射的射频信号的第二阶段由第二外部测量装置测量，以连接到用于第一校准测量的参考平面。在线圈元件的相位精确致动中和/或用于利用内部测量装置校正进一步的测量时，考虑到第一相和第二相的至少一相。

9. 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.

10. 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。

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