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1. 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.

2. 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。

3. 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.

4. 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。

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。

7. 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。

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

US10761155B2 Hybrid averaging method for specific absorption rate supervision 有权
公开(公告)号：US10761155B2
公开(公告)日：2020-09-01
申请号：US14332070
申请日：2014-07-15
申请人： Holger Adolf , Thomas Benner , Jörg Ulrich Fontius , Rene Gumbrecht
发明人： Holger Adolf , Thomas Benner , Jörg Ulrich Fontius , Rene Gumbrecht
IPC分类号： G01V3/00 , G01R33/28 , G01R33/32
摘要： In order to reduce the memory footprint used for monitoring specific absorption rate (SAR) in a magnetic resonance imaging (MRI) system, a hybrid sliding window method is provided. The method includes receiving a measured value once every first time interval, processing the measured value, and storing a value resulting from the processing in a first memory element. Measured values stored in second memory elements are summed every second time interval, where the first time interval is less than the second time interval. A representation of SAR is calculated every first time interval based on the value resulting from the processing and the sum of the measured values of the second memory elements. When the second time interval is reached, the value stored in the first memory element is moved to one of the second memory elements, and the value stored in the first memory element is reset to zero.

10. 发明申请

US20150022206A1 Hybrid Averaging Method for Specific Absorption Rate Supervision 审中-公开
标题翻译：用于特定吸收率监督的混合平均方法
公开(公告)号：US20150022206A1
公开(公告)日：2015-01-22
申请号：US14332070
申请日：2014-07-15
申请人： Holger Adolf , Thomas Benner , Jörg Ulrich Fontius , Rene Gumbrecht
发明人： Holger Adolf , Thomas Benner , Jörg Ulrich Fontius , Rene Gumbrecht
IPC分类号： G01R33/28 , G01R33/44
摘要： In order to reduce the memory footprint used for monitoring specific absorption rate (SAR) in a magnetic resonance imaging (MRI) system, a hybrid sliding window method is provided. The method includes receiving a measured value once every first time interval, processing the measured value, and storing a value resulting from the processing in a first memory element. Measured values stored in second memory elements are summed every second time interval, where the first time interval is less than the second time interval. A representation of SAR is calculated every first time interval based on the value resulting from the processing and the sum of the measured values of the second memory elements. When the second time interval is reached, the value stored in the first memory element is moved to one of the second memory elements, and the value stored in the first memory element is reset to zero.
摘要翻译：为了减少用于监测磁共振成像（MRI）系统中特定吸收率（SAR）的记忆足迹，提供了一种混合滑动窗口法。该方法包括每第一时间间隔接收测量值一次，处理测量值，以及将由处理产生的值存储在第一存储器元件中。存储在第二存储元件中的测量值每第二时间间隔相加，其中第一时间间隔小于第二时间间隔。基于由处理产生的值和第二存储器元件的测量值的总和，每第一时间间隔计算SAR的表示。当达到第二时间间隔时，存储在第一存储器元件中的值被移动到第二存储器元件中的一个，并且存储在第一存储器元件中的值被重置为零。

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