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公开(公告)号：US07432713B2
公开(公告)日：2008-10-07
申请号：US11756780
申请日：2007-06-01
IPC分类号： G01V3/00
CPC分类号： G01R33/28 , G01R33/5659
摘要： A dielectric element for positioning on an examination subject for locally influencing the B1 field distribution during magnetic resonance data acquisition contains a relaxation agent bound to mutually separated particles. The relaxation agent incorporates a paramagnetic substance. In a corresponding method for acquiring magnetic resonance data from an examination subject, such a dielectric element is positioned on the examination subject for locally influencing the B1 field distribution, by homogenizing the B1 field of a magnetic resonance apparatus.
摘要翻译： 用于定位在检查对象上用于在磁共振数据采集期间局部影响B1场分布的电介质元件包含与相互分离的颗粒结合的松弛剂。 松弛剂包含顺磁性物质。 在用于从检查对象获取磁共振数据的相应方法中，这样的电介质元件位于检查对象上，用于局部影响B 1场分布，通过使B＆lt; 1＆ 磁共振装置。
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公开(公告)号：US20070279054A1
公开(公告)日：2007-12-06
申请号：US11756780
申请日：2007-06-01
IPC分类号： G01V3/00
CPC分类号： G01R33/28 , G01R33/5659
摘要： A dielectric element for positioning on an examination subject for locally influencing the B1 field distribution during magnetic resonance data acquisition contains a relaxation agent bound to mutually separated particles. The relaxation agent incorporates a paramagnetic substance. In a corresponding method for acquiring magnetic resonance data from an examination subject, such a dielectric element is positioned on the examination subject for locally influencing the B1 field distribution, by homogenizing the B1 field of a magnetic resonance apparatus.
摘要翻译： 用于定位在检查对象上用于在磁共振数据采集期间局部影响B1场分布的电介质元件包含与相互分离的颗粒结合的松弛剂。 松弛剂包含顺磁性物质。 在用于从检查对象获取磁共振数据的相应方法中，这样的电介质元件位于检查对象上，用于局部影响B 1场分布，通过使B＆lt; 1＆ 磁共振装置。
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公开(公告)号：US09366739B2
公开(公告)日：2016-06-14
申请号：US13853865
申请日：2013-03-29
IPC分类号： G01V3/00 , G01R33/54 , G01R33/32 , G01R33/561
CPC分类号： G01R33/54 , G01R33/32 , G01R33/5612
摘要： A method for activating a magnetic resonance system having a transmit antenna arrangement is provided. The transmit antenna arrangement includes a plurality of independent high-frequency transmit channels with a respectively assigned transmit antenna. Each high-frequency transmit channel has a controllable oscillator. The individual high-frequency transmit channels are activated with independent transmit pulses, and a frequency of the controllable oscillators is controlled independently. At least two of the controllable oscillators therefore oscillate in different frequencies.
摘要翻译： 提供一种用于激活具有发射天线装置的磁共振系统的方法。 发射天线布置包括具有分配的发射天线的多个独立的高频发射信道。 每个高频发射信道具有可控振荡器。 单独的高频发射信道由独立的发射脉冲激活，可控振荡器的频率被独立地控制。 因此，至少两个可控振荡器以不同的频率振荡。
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4.发明授权Method of operating an MRI imaging system, while also controlling graadient and shim sub-systems along with the MRI imaging system 有权操作MRI成像系统的方法，同时还可以控制成像系统和MRI成像系统公开(公告)号：US08633690B2
公开(公告)日：2014-01-21
申请号：US12777378
申请日：2010-05-11
IPC分类号： G01R33/54 , G01R33/546 , A61B5/055
CPC分类号： G01R33/54 , A61B5/055 , G01R33/546
摘要： In an imaging system having a number of subsystems and a control device that controls the subsystems in a coordinated manner to implement a measurement sequence and an operating method therefor, sequence control data that define different functional sub-sequences of the measurement sequence are transmitted to the control device. Different active volumes are associated with the functional sub-sequences. In addition to the sequence control data, active volume position data are provided to the control device that define bearing and extent of the active volumes associated with the different functional sub-sequences. Control signals to implement the measurement sequence for the different subsystems are generated automatically by the control device based on the sequence control data and the active volume position data so that the individual functional sub-sequences are locally optimized at least with regard to a sub-region of their associated active volume.
摘要翻译： 在具有多个子系统和控制装置的成像系统中，以协调的方式控制子系统以实现测量序列及其操作方法，定义测量序列的不同功能子序列的序列控制数据被发送到 控制装置 不同的活动卷与功能子序列相关联。 除了序列控制数据之外，将有效体积位置数据提供给控制装置，其定义与不同功能子序列相关联的活动体的轴承和范围。 用于实现不同子系统的测量序列的控制信号由控制装置基于序列控制数据和有效体积位置数据自动生成，使得至少关于子区域对各个功能子序列进行局部优化 的相关活动量。
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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
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.
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6.发明申请METHOD AND MAGNETIC RESONANCE SYSTEM TO REDUCE DISTORTIONS IN DIFFUSION IMAGING 有权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
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。
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7.发明授权Method for operating a receiving device for magnetic resonance image signals of a body 有权一种用于操作身体的磁共振图像信号的接收装置的方法公开(公告)号：US09244142B2
公开(公告)日：2016-01-26
申请号：US13679782
申请日：2012-11-16
IPC分类号： G01R33/48 , G01R33/54 , G01R33/3415 , G01R33/483
CPC分类号： G01R33/48 , G01R33/3415 , G01R33/4835 , G01R33/543
摘要： A receiving device for magnetic resonance (MR) image signals of a body is operated in an MR system such that for at least one coil element of the receiving device, a space domain, in which a spatial sensitivity of the coil element satisfies a predetermined criterion, is determined. A center frequency and a bandwidth of the MR image signal radiated by the body in the space domain are determined for the space domain. A receive path disposed downstream of the coil element is parameterized for operation at the determined center frequency and with the determined bandwidth.
摘要翻译： 用于身体的磁共振（MR）图像信号的接收装置在MR系统中操作，使得对于接收装置的至少一个线圈元件，空间域，其中线圈元件的空间灵敏度满足预定标准 ， 决心，决意，决定。 空间域中的身体辐射的MR图像信号的中心频率和带宽被确定。 设置在线圈元件下游的接收路径被参数化以在确定的中心频率和确定的带宽下操作。
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公开(公告)号：US20130257426A1
公开(公告)日：2013-10-03
申请号：US13853865
申请日：2013-03-29
IPC分类号： G01R33/54
CPC分类号： G01R33/54 , G01R33/32 , G01R33/5612
摘要： A method for activating a magnetic resonance system having a transmit antenna arrangement is provided. The transmit antenna arrangement includes a plurality of independent high-frequency transmit channels with a respectively assigned transmit antenna. Each high-frequency transmit channel has a controllable oscillator. The individual high-frequency transmit channels are activated with independent transmit pulses, and a frequency of the controllable oscillators is controlled independently. At least two of the controllable oscillators therefore oscillate in different frequencies.
摘要翻译： 提供一种用于激活具有发射天线装置的磁共振系统的方法。 发射天线布置包括具有分配的发射天线的多个独立的高频发射信道。 每个高频发射信道具有可控振荡器。 单独的高频发射信道由独立的发射脉冲激活，可控振荡器的频率被独立地控制。 因此，至少两个可控振荡器以不同的频率振荡。
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9.发明授权Method and magnetic resonance system to reduce distortions in diffusion imaging 有权方法和磁共振系统，以减少扩散成像中的失真公开(公告)号：US08508226B2
公开(公告)日：2013-08-13
申请号：US13020302
申请日：2011-02-03
IPC分类号： G01V3/00
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。
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10.发明申请MAGNETIC RESONANCE SYSTEM AND METHOD FOR COMPUTERIZED RULE-BASED CONTROL THEREOF 审中-公开磁共振系统及其计算机基于规则的控制方法公开(公告)号：US20110043204A1
公开(公告)日：2011-02-24
申请号：US12859461
申请日：2010-08-19
申请人： Wolfgang Bielmeier , Gerhard Brinker , Swen Campagna , Thorsten Feiweier , Bernd Kuehn , Mathias Nittka , Carsten Prinz , Thorsten Speckner
发明人： Wolfgang Bielmeier , Gerhard Brinker , Swen Campagna , Thorsten Feiweier , Bernd Kuehn , Mathias Nittka , Carsten Prinz , Thorsten Speckner
IPC分类号： G01R33/44
CPC分类号： G01R33/546 , G01R33/543
摘要： In a magnetic resonance system according to a measurement protocol defined in advance and comprising multiple acquisition parameters, wherein given a non-compliance with at least one limit value (which is automatically established before the beginning of a subject-specific measurement data acquisition)—in particular a SAR limit value and/or a magneto-stimulation limit value and/or a hardware limit value—by the measurement protocol, an adaptation of at least one acquisition parameter ensues using at least one (in particular user-defined) protocol-specific rule for compliance with the limit value, and the measurement data acquisition ensues automatically according to the adapted acquisition parameters.
摘要翻译： 在根据预先定义并包括多个采集参数的测量协议的磁共振系统中，其中给定不符合至少一个限制值（其在对象特异性测量数据获取开始之前自动建立） - 在 特别是SAR限制值和/或磁刺激极限值和/或硬件限制值 - 通过测量协议，使用至少一个（特别是用户定义的）协议特定的随机序列来调整至少一个采集参数 根据适应的采集参数自动进行测量数据采集。
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