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1. 发明申请

US20050189940A1 Magnetic resonance system and operating method for RF pulse optimization 有权
标题翻译：用于RF脉冲优化的磁共振系统和操作方法
公开(公告)号：US20050189940A1
公开(公告)日：2005-09-01
申请号：US11036727
申请日：2005-01-14
申请人： Thorsten Feiweier , Ralf Ladebeck , Ralph Oppelt , Wolfgang Renz , Markus Vester
发明人： Thorsten Feiweier , Ralf Ladebeck , Ralph Oppelt , Wolfgang Renz , Markus Vester
IPC分类号： A61B5/055 , G01R33/34 , G01R33/3415 , G01R33/36 , G01V3/00
CPC分类号： G01R33/5612 , G01R33/246 , G01R33/543 , G01R33/5659
摘要： In a magnetic resonance system and an operating method therefor, a B1 field distribution of a radio-frequency antenna is measured in at least one part of a examination volume of the magnetic resonance system, and then the RF pulses emitted by the radio-frequency antenna are optimized, based on the determined B1 field distribution, for homogenization in a specific volume. An effective volume within the examination volume is determined beforehand for each applied RF pulse and, based on the determined B1 field distribution, the appertaining RF pulse is individually adjusted such that the B1 field is homogenized within the effective volume of the RF pulse.
摘要翻译：在磁共振系统及其操作方法中，在磁共振系统的检查体积的至少一部分中测量射频天线的B 1场分布，然后RF 基于确定的B SUB场分布来优化由射频天线发射的脉冲用于在特定体积中的均匀化。对于每个施加的RF脉冲，预先确定检查体积内的有效体积，并且基于所确定的B SUB场分布，分别调整相应的RF脉冲，使得B <1> SUB>场在RF脉冲的有效体积内均匀化。

2. 发明授权

US07221162B2 RF transmitter arrangement for an MR system, and method for determining a setting parameter therefor 有权
标题翻译：用于MR系统的RF发射机布置，以及用于确定其设置参数的方法
公开(公告)号：US07221162B2
公开(公告)日：2007-05-22
申请号：US10993644
申请日：2004-11-19
申请人： Thorsten Feiweier , Ralph Oppelt , Wolfgang Renz , Markus Vester
发明人： Thorsten Feiweier , Ralph Oppelt , Wolfgang Renz , Markus Vester
IPC分类号： G01V3/00
CPC分类号： G01R33/5659 , G01R33/246 , G01R33/34046 , G01R33/34061 , G01R33/3415 , G01R33/3607 , G01R33/5612
摘要： A radio frequency transmitter arrangement for a magnetic resonance apparatus has a distribution unit and an antenna unit, wherein the antenna unit, to generate radio frequency fields, is fashioned in at least two orthogonal modes, and the distribution unit is fashioned for the division of an RF transmission signal into at least two mode feed signals. At least one adjustment unit is provided to adjust the amplitude and/or phase of one of the mode feed signals and is connected with the antenna unit such that each of the mode feed signals generates a radio frequency field in one of the modes. A multiple transmitter arrangement has at least two radio frequency transmitter arrangements and at least two 180° hybrids. A method is provided to determine at least one setting parameter of the adjustment unit.
摘要翻译：用于磁共振装置的射频发射器装置具有分配单元和天线单元，其中生成射频场的天线单元以至少两个正交模式形成，并且分配单元被形成用于划分 RF传输信号转换成至少两个模式馈送信号。提供至少一个调整单元以调整模式馈送信号之一的幅度和/或相位，并且与天线单元连接，使得每个模式馈送信号在其中一种模式中产生射频场。多发射机布置具有至少两个射频发射机布置和至少两个180°混合。提供了一种确定调节单元的至少一个设定参数的方法。

3. 发明授权

US07218113B2 Magnetic resonance system and operating method for RF pulse optimization 有权
标题翻译：用于RF脉冲优化的磁共振系统和操作方法
公开(公告)号：US07218113B2
公开(公告)日：2007-05-15
申请号：US11036727
申请日：2005-01-14
申请人： Thorsten Feiweier , Ralf Ladebeck , Ralph Oppelt , Wolfgang Renz , Markus Vester
发明人： Thorsten Feiweier , Ralf Ladebeck , Ralph Oppelt , Wolfgang Renz , Markus Vester
IPC分类号： G01V3/00
CPC分类号： G01R33/5612 , G01R33/246 , G01R33/543 , G01R33/5659
摘要： In a magnetic resonance system and an operating method therefor, a B1 field distribution of a radio-frequency antenna is measured in at least one part of a examination volume of the magnetic resonance system, and then the RF pulses emitted by the radio-frequency antenna are optimized, based on the determined B1 field distribution, for homogenization in a specific volume. An effective volume within the examination volume is determined beforehand for each applied RF pulse and, based on the determined B1 field distribution, the appertaining RF pulse is individually adjusted such that the B1 field is homogenized within the effective volume of the RF pulse.
摘要翻译：在磁共振系统及其操作方法中，在磁共振系统的检查体积的至少一部分中测量射频天线的B 1场分布，然后RF 基于确定的B SUB场分布来优化由射频天线发射的脉冲用于在特定体积中的均匀化。对于每个施加的RF脉冲，预先确定检查体积内的有效体积，并且基于所确定的B SUB场分布，分别调整相应的RF脉冲，使得B <1> SUB>场在RF脉冲的有效体积内均匀化。

4. 发明申请

US20050140369A1 RF transmitter arrangement for an MR system, and method for determining a setting parameter therefor 有权
标题翻译：用于MR系统的RF发射机布置，以及用于确定其设置参数的方法
公开(公告)号：US20050140369A1
公开(公告)日：2005-06-30
申请号：US10993644
申请日：2004-11-19
申请人： Thorsten Feiweier , Ralph Oppelt , Wolfgang Renz , Markus Vester
发明人： Thorsten Feiweier , Ralph Oppelt , Wolfgang Renz , Markus Vester
IPC分类号： G01R33/34 , G01R33/36 , G01V3/00
CPC分类号： G01R33/5659 , G01R33/246 , G01R33/34046 , G01R33/34061 , G01R33/3415 , G01R33/3607 , G01R33/5612
摘要： A radio frequency transmitter arrangement for a magnetic resonance apparatus has a distribution unit and an antenna unit, wherein the antenna unit, to generate radio frequency fields, is fashioned in at least two orthogonal modes, and the distribution unit is fashioned for the division of an RF transmission signal into at least two mode feed signals. At least one adjustment unit is provided to adjust the amplitude and/or phase of one of the mode feed signals and is connected with the antenna unit such that each of the mode feed signals generates a radio frequency field in one of the modes. A multiple transmitter arrangement has at least two radio frequency transmitter arrangements and at least two 180° hybrids. A method is provided to determine at least one setting parameter of the adjustment unit.
摘要翻译：用于磁共振装置的射频发射器装置具有分配单元和天线单元，其中生成射频场的天线单元以至少两个正交模式形成，并且分配单元被形成用于划分 RF传输信号转换成至少两个模式馈送信号。提供至少一个调整单元以调整模式馈送信号之一的幅度和/或相位，并且与天线单元连接，使得每个模式馈送信号在其中一种模式中产生射频场。多发射机布置具有至少两个射频发射机布置和至少两个180°混合。提供了一种确定调节单元的至少一个设定参数的方法。

5. 发明授权

US08587293B2 Coil position detection 失效
标题翻译：线圈位置检测
公开(公告)号：US08587293B2
公开(公告)日：2013-11-19
申请号：US12684158
申请日：2010-01-08
申请人： Stephan Biber , Thorsten Feiweier , Wolfgang Renz
发明人： Stephan Biber , Thorsten Feiweier , Wolfgang Renz
IPC分类号： G01B7/14 , G01B7/30 , G01R33/02
CPC分类号： G01R33/3642 , G01R33/341
摘要： A simple position determination is enabled by a device and a method to determine the position of a local coil in a magnetic resonance apparatus, wherein at least one signal emitted by at least one transmission coil is received by the local coil and is evaluated with a position determination device in order to determine the position of the local coil.
摘要翻译：一种简单的位置确定是通过一种装置和方法来实现的，该装置和方法用于确定磁共振装置中局部线圈的位置，其中由至少一个传输线圈发射的至少一个信号由局部线圈接收并且用位置确定装置，以确定局部线圈的位置。

6. 发明授权

US07002347B2 Local coil unit for a magnetic resonance apparatus 失效
标题翻译：用于磁共振设备的局部线圈单元
公开(公告)号：US07002347B2
公开(公告)日：2006-02-21
申请号：US10953303
申请日：2004-09-29
申请人： Thorsten Feiweier , Razvan Lazar , Wolfgang Renz , Lothar Schön
发明人： Thorsten Feiweier , Razvan Lazar , Wolfgang Renz , Lothar Schön
IPC分类号： G01V3/00
CPC分类号： G01R33/341
摘要： A local coil unit for a magnetic resonance apparatus, which radiates a radio-frequency field into an examination subject, has a housing and at least a part of the housing is formed of an insulating dielectric material that passively compensates for an inhomogeneity in the high-frequency field in the subject. The material has a relative dielectric value εr of greater than 50, preferably greater than 100, and a dielectric loss factor tan δ of less than 2.5×10−2, preferably less than 1×10−3. In the dielectric material displacement currents are generated which create an additional magnetic field that compensates for the minima in the B1 field as a result of the eddy currents arising in the patient due to the radio-frequency radiation.
摘要翻译：用于将射频场辐射到检查对象中的磁共振设备的局部线圈单元具有壳体，并且壳体的至少一部分由绝缘电介质材料形成，被动地补偿高频场中的不均匀性，频率场。该材料具有大于50，优选大于100的相对电介质值εL r以及低于2.5×10 -2的介电损耗因子tanδ，优选地较小超过1×10 -3 -3。在电介质材料中，产生位移电流，其产生额外的磁场，其由于射频辐射而在患者体内产生的涡流的结果来补偿B1场中的最小值。

7. 发明申请

US20100176800A1 COIL POSITION DETECTION 失效
标题翻译：线圈位置检测
公开(公告)号：US20100176800A1
公开(公告)日：2010-07-15
申请号：US12684158
申请日：2010-01-08
申请人： Stephan Biber , Thorsten Feiweier , Wolfgang Renz
发明人： Stephan Biber , Thorsten Feiweier , Wolfgang Renz
IPC分类号： G01B7/14 , G01R33/44
CPC分类号： G01R33/3642 , G01R33/341
摘要： A simple position determination is enabled by a device and a method to determine the position of a local coil in a magnetic resonance apparatus, wherein at least one signal emitted by at least one transmission coil is received by the local coil and is evaluated with a position determination device in order to determine the position of the local coil.
摘要翻译：一种简单的位置确定是通过一种装置和方法来实现的，该装置和方法用于确定磁共振装置中局部线圈的位置，其中由至少一个传输线圈发射的至少一个信号由局部线圈接收并且用位置确定装置，以确定局部线圈的位置。

8. 发明授权

US07224165B2 Method, dielectric element, and MR system for generating an MR exposure 有权
标题翻译：方法，电介质元件和用于产生MR暴露的MR系统
公开(公告)号：US07224165B2
公开(公告)日：2007-05-29
申请号：US11055313
申请日：2005-02-10
申请人： Thorsten Feiweier , Berthold Kiefer , Wolfgang Renz , Lothar Schön
发明人： Thorsten Feiweier , Berthold Kiefer , Wolfgang Renz , Lothar Schön
IPC分类号： G01V3/00
CPC分类号： G01R33/5659
摘要： For generating of magnetic resonance exposures of an examination subject, a dielectric element with high dielectric constant is positioned on the examination subject to locally influence the B1 field distribution, the dielectric element being formed primarily of material whose magnetic resonance line(s) is/are shifted by at least a specific degree relative to the magnetic resonance line of water protons for a given magnetic field. In a measurement for generation of a magnetic resonance exposure a measurement sequence is used, such in the acquisition of the raw image data the dielectric material of the dielectric element supplies no signal contributions for the image generation and/or the signals caused by the dielectric material of the dielectric element can be separated from the signals caused by the examination subject.
摘要翻译：为了产生检查对象的磁共振曝光，具有高介电常数的电介质元件位于检查对象上，局部地影响B 1场分布，电介质元件主要由材料形成，其磁性谐振线相对于给定磁场的水质子的磁共振线至少具有一定程度的偏移。在用于产生磁共振曝光的测量中，使用测量序列，例如在获取原始图像数据时，电介质元件的电介质材料不产生用于图像产生的信号贡献和/或由电介质材料引起的信号的介电元件可以与由检查对象引起的信号分离。

9. 发明申请

US20050194974A1 Method, dielectric element, and MR system for generating an MR exposure 有权
标题翻译：方法，电介质元件和用于产生MR暴露的MR系统
公开(公告)号：US20050194974A1
公开(公告)日：2005-09-08
申请号：US11055313
申请日：2005-02-10
申请人： Thorsten Feiweier , Berthold Kiefer , Wolfgang Renz , Lothar Schon
发明人： Thorsten Feiweier , Berthold Kiefer , Wolfgang Renz , Lothar Schon
IPC分类号： G01R33/36 , G01R33/56 , G01V3/00
CPC分类号： G01R33/5659
摘要： For generating of magnetic resonance exposures of an examination subject, a dielectric element with high dielectric constant is positioned on the examination subject to locally influence the B1 field distribution, the dielectric element being formed primarily of material whose magnetic resonance line(s) is/are shifted by at least a specific degree relative to the magnetic resonance line of water protons for a given magnetic field. In a measurement for generation of a magnetic resonance exposure a measurement sequence is used, such in the acquisition of the raw image data the dielectric material of the dielectric element supplies no signal contributions for the image generation and/or the signals caused by the dielectric material of the dielectric element can be separated from the signals caused by the examination subject.
摘要翻译：为了产生检查对象的磁共振曝光，具有高介电常数的电介质元件位于检查对象上，局部地影响B 1场分布，电介质元件主要由材料形成，其磁性谐振线相对于给定磁场的水质子的磁共振线至少具有一定程度的偏移。在用于产生磁共振曝光的测量中，使用测量序列，例如在获取原始图像数据时，电介质元件的电介质材料不产生用于图像产生的信号贡献和/或由电介质材料引起的信号的介电元件可以与由检查对象引起的信号分离。

10. 发明申请

US20050110493A1 Local coil unit for a magnetic resonance apparatus 失效
标题翻译：用于磁共振设备的局部线圈单元
公开(公告)号：US20050110493A1
公开(公告)日：2005-05-26
申请号：US10953303
申请日：2004-09-29
申请人： Thorsten Feiweier , Razvan Lazar , Wolfgang Renz , Lothar Schon
发明人： Thorsten Feiweier , Razvan Lazar , Wolfgang Renz , Lothar Schon
IPC分类号： G01R33/341 , G01V3/00
CPC分类号： G01R33/341
摘要： A local coil unit for a magnetic resonance apparatus, which radiates a radio-frequency field into an examination subject, has a housing and at least a part of the housing is formed of an insulating dielectric material that passively compensates for an inhomogeneity in the high-frequency field in the subject. The material has a relative dielectric value εr of greater than 50, preferably greater than 100, and a dielectric loss factor tan δ of less than 2.5×10−2, preferably less than 1×10−3. In the dielectric material displacement currents are generated which create an additional magnetic field that compensates for the minima in the B1 field as a result of the eddy currents arising in the patient due to the radio-frequency radiation.
摘要翻译：用于将射频场辐射到检查对象中的磁共振设备的局部线圈单元具有壳体，并且壳体的至少一部分由绝缘电介质材料形成，被动地补偿高频场中的不均匀性，频率场。该材料具有大于50，优选大于100的相对电介质值εL r以及低于2.5×10 -2的介电损耗因子tanδ，优选地较小超过1×10 -3 -3。在电介质材料中，产生位移电流，其产生额外的磁场，其由于射频辐射而在患者体内产生的涡流的结果来补偿B1场中的最小值。

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