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1. 发明授权

US09244138B2 Magnetic resonance antenna arrangement and magnetic resonance system 有权
公开(公告)号：US09244138B2
公开(公告)日：2016-01-26
申请号：US13683456
申请日：2012-11-21
申请人： Volker Matschl , Juergen Nistler
发明人： Volker Matschl , Juergen Nistler
IPC分类号： G01V3/00 , G01R33/34 , G01R33/54 , G01R33/345 , G01R33/36 , G01R33/28 , G01R33/561 , G01R33/565
摘要： A magnetic resonance antenna arrangement includes at least one first antenna group including individually-controllable first antenna conductor loops and a second antenna group adjacent to the first antenna group. The second antenna group includes individually-controllable, longitudinal second antenna elements. The first antenna conductor loops essentially extend in a first extending surface and are disposed in the first extending surface in a first direction in a row behind one another. The longitudinal second antenna elements extend with the longitudinal axes transverse to the first direction disposed in parallel next to one another in a second extending surface that runs essentially in parallel to the first extending surface. Each of the second antenna elements are coupled at first and second end areas to a conductive element to form a second conductor loop with the conductive element. The second antenna elements are disposed to overlap an adjacent first antenna loop in each case.

2. 发明申请

US20130127463A1 Magnetic Resonance Antenna Arrangement and Magnetic Resonance System 有权
标题翻译：磁共振天线布置和磁共振系统
公开(公告)号：US20130127463A1
公开(公告)日：2013-05-23
申请号：US13683456
申请日：2012-11-21
申请人： Volker Matschl , Juergen Nistler
发明人： Volker Matschl , Juergen Nistler
IPC分类号： G01R33/34 , G01R33/54
CPC分类号： G01R33/34 , G01R33/288 , G01R33/34076 , G01R33/3453 , G01R33/365 , G01R33/54 , G01R33/5612 , G01R33/5659
摘要： A magnetic resonance antenna arrangement includes at least one first antenna group including individually-controllable first antenna conductor loops and a second antenna group adjacent to the first antenna group. The second antenna group includes individually-controllable, longitudinal second antenna elements. The first antenna conductor loops essentially extend in a first extending surface and are disposed in the first extending surface in a first direction in a row behind one another. The longitudinal second antenna elements extend with the longitudinal axes transverse to the first direction disposed in parallel next to one another in a second extending surface that runs essentially in parallel to the first extending surface. Each of the second antenna elements are coupled at first and second end areas to a conductive element to form a second conductor loop with the conductive element. The second antenna elements are disposed to overlap an adjacent first antenna loop in each case.
摘要翻译：磁共振天线布置包括至少一个第一天线组，其包括可独立控制的第一天线导体环和与第一天线组相邻的第二天线组。第二天线组包括单独可控的纵向第二天线元件。第一天线导体环基本上在第一延伸表面中延伸，并且在第一方向上在第一方向上彼此排成一列。所述纵向第二天线元件在与所述第一延伸表面基本上平行地延伸的第二延伸表面中，横向于所述第一方向的纵向轴线彼此平行地延伸。每个第二天线元件在第一和第二端部区域耦合到导电元件以与导电元件形成第二导体环路。在每种情况下，第二天线元件设置成与相邻的第一天线回路重叠。

3. 发明授权

US08237442B2 Magnetic resonance antenna 有权
标题翻译：磁共振天线
公开(公告)号：US08237442B2
公开(公告)日：2012-08-07
申请号：US12639481
申请日：2009-12-16
申请人： Razvan Lazar , Juergen Nistler
发明人： Razvan Lazar , Juergen Nistler
IPC分类号： G01V3/00
CPC分类号： G01R33/34076 , G01R33/3628
摘要： A magnetic resonance antenna has capacitive and inductive oscillating circuit antenna elements at least one radio-frequency switching element with which at least one of the oscillating circuit antenna elements that determine the resonant frequency of the magnetic resonance antenna, can be switched at radio frequency between a permeable state and an impermeable state to change the resonant frequency of the magnetic resonance antenna, so the antenna can be detuned simply, cost-effectively and efficiently.
摘要翻译：磁共振天线具有电容和电感振荡电路天线元件，至少一个射频切换元件，确定磁共振天线的谐振频率的至少一个振荡电路天线元件可以通过该至少一个射频开关元件在射频之间切换透气状态和不透水状态，以改变磁共振天线的谐振频率，因此天线可以简单，经济高效地失谐。

4. 发明授权

US07683622B2 Radio-frequency transmission arrangement for a magnetic resonance system 有权
标题翻译：用于磁共振系统的射频传输装置
公开(公告)号：US07683622B2
公开(公告)日：2010-03-23
申请号：US11863542
申请日：2007-09-28
申请人： Juergen Nistler , Wilfried Schnell
发明人： Juergen Nistler , Wilfried Schnell
IPC分类号： G01V3/00
CPC分类号： G01R33/34046 , G01R33/3415
摘要： A radio-frequency transmission arrangement for an MR system for generation of a total B1 field which has a first antenna device that generates a first portion of the total B1 field and at least one antenna insert that generates a second portion of the total B1 field, such that the resulting B1 field is generated by the first antenna device and the at least one antenna insert.
摘要翻译：一种用于生成总B1场的MR系统的射频传输装置，其具有产生总B1场的第一部分的第一天线装置和产生总B1场的第二部分的至少一个天线插入件，使得所产生的B1场由第一天线装置和至少一个天线插入件产生。

5. 发明授权

US06636039B1 Radio-frequency antenna for a magnetic resonance apparatus 失效
标题翻译：用于磁共振装置的射频天线
公开(公告)号：US06636039B1
公开(公告)日：2003-10-21
申请号：US09267414
申请日：1999-03-12
申请人： Juergen Nistler
发明人： Juergen Nistler
IPC分类号： G01V300
CPC分类号： G01R33/34076 , G01R33/34046
摘要： A radio-frequency antenna for a magnetic resonance apparatus has two antenna longitudinal conductors arranged opposite one another, two radio-frequency-shorted conductor loops that are respectively connected to the ends of the antenna longitudinal conductors, and an antenna return line that is planarly fashioned and electromagnetically coupled to the antenna longitudinal conductors and the conductor loops. A first signal terminal point is connected to the antenna return conductor. A second signal terminal location connected to one of the conductor loops is arranged such that an antenna impedance measured between the signal terminal locations is equal to a characteristic impedance of a signal line connectable thereat.
摘要翻译：用于磁共振装置的射频天线具有彼此相对布置的两个天线纵向导体，分别连接到天线纵向导体的端部的两个射频短路导体回路和平面形成的天线返回线并且电磁耦合到天线纵向导体和导体环路。第一信号端点连接到天线回路导体。连接到一个导体环路的第二信号端子位置布置成使得在信号端子位置之间测量的天线阻抗等于可连接到其的信号线的特性阻抗。

6. 发明授权

US08930151B2 Method and device to monitor a module operating in a magnetic resonance system 有权
标题翻译：监测在磁共振系统中工作的模块的方法和装置
公开(公告)号：US08930151B2
公开(公告)日：2015-01-06
申请号：US13111128
申请日：2011-05-19
申请人： Juergen Nistler
发明人： Juergen Nistler
IPC分类号： G06F19/00 , G01R33/36 , G01R33/28
CPC分类号： G01R33/36 , G01R33/288
摘要： A monitoring method to monitor and/or protect modules, in particular a radio-frequency antenna of a magnetic resonance system, includes a measurement step in which at least one first characteristic monitoring variable is measured by at least one first measurement unit, and at least one calculation step in which at least one maximum limit value for a power and/or a voltage within the module is calculated using the at least one first measured characteristic monitoring variable. At least one second characteristic monitoring variable, different than the at least one first characteristic monitoring variable, is measured in the measurement step.
摘要翻译：监测和/或保护模块，特别是磁共振系统的射频天线的监测方法包括测量步骤，其中至少一个第一特征监测变量由至少一个第一测量单元测量，并且至少一个计算步骤，其中使用所述至少一个第一测量特征监测变量来计算所述模块内的功率和/或电压的至少一个最大极限值。在测量步骤中测量与至少一个第一特征监测变量不同的至少一个第二特性监测变量。

7. 发明申请

US20110295531A1 METHOD AND DEVICE TO MONITOR A MODULE OPERATING IN A MAGNETIC RESONANCE SYSTEM 有权
标题翻译：用于监测在磁共振系统中操作的模块的方法和装置
公开(公告)号：US20110295531A1
公开(公告)日：2011-12-01
申请号：US13111128
申请日：2011-05-19
申请人： Juergen Nistler
发明人： Juergen Nistler
IPC分类号： G06F19/00
CPC分类号： G01R33/36 , G01R33/288
摘要： A monitoring method to monitor and/or protect modules, in particular a radio-frequency antenna of a magnetic resonance system, includes a measurement step in which at least one first characteristic monitoring variable is measured by at least one first measurement unit, and at least one calculation step in which at least one maximum limit value for a power and/or a voltage within the module is calculated using the at least one first measured characteristic monitoring variable. At least one second characteristic monitoring variable, different than the at least one first characteristic monitoring variable, is measured in the measurement step.
摘要翻译：监测和/或保护模块，特别是磁共振系统的射频天线的监测方法包括测量步骤，其中至少一个第一特征监测变量由至少一个第一测量单元测量，并且至少一个计算步骤，其中使用所述至少一个第一测量特征监测变量来计算所述模块内的功率和/或电压的至少一个最大极限值。在测量步骤中测量与至少一个第一特征监测变量不同的至少一个第二特性监测变量。

8. 发明授权

US07847550B2 Control method for SAR-optimized activation of a coil array 有权
标题翻译：线性阵列SAR优化激活控制方法
公开(公告)号：US07847550B2
公开(公告)日：2010-12-07
申请号：US12353292
申请日：2009-01-14
申请人： Dirk Diehl , Juergen Nistler , Wolfgang Renz , Markus Vester , Sebastian Wolf
发明人： Dirk Diehl , Juergen Nistler , Wolfgang Renz , Markus Vester , Sebastian Wolf
IPC分类号： G01V3/00
CPC分类号： G01R33/3415 , G01R33/288 , G01R33/5612 , G01R33/5659
摘要： A control device for a magnetic resonance system activates the coils of a transmission array and a gradient magnet system of the magnetic resonance system by causing an excitation pulse to be supplied to each coil. A magnetization that exhibits a first actual inhomogeneity thereby is generated in an excitation volume of the magnetic resonance system. The control device determines the excitation pulse for each coil using a start pulse and a maximum allowable inhomogeneity. The respective start pulse has a total time duration. When the control device activates the coils of the transmission array and of the gradient magnet system corresponding to the start pulse, a magnetization that exhibits a second actual inhomogeneity that is smaller than the maximum permissible inhomogeneity is generated in the excitation volume. The control device determines an intermediate point of the start pulse so that the respective start pulse is divided into a first pulse part and a second pulse part that is complementary to the first pulse part. The first pulse part corresponds to a respective low-energy portion of the start pulse, the second pulse part with a high-energy portion of the respective start pulse. The control device temporally extends the second pulse part and correspondingly compresses the second pulse part in terms of amplitude. The temporally extended and amplitude-compressed pulse part is used as the excitation pulse. The control device determines the intermediate point such that the first inhomogeneity is still smaller than the maximum allowable inhomogeneity.
摘要翻译：用于磁共振系统的控制装置通过使激励脉冲提供给每个线圈来激活磁共振系统的传输阵列的线圈和梯度磁体系统。在磁共振系统的激励体积中产生呈现出第一实际不均匀性的磁化。控制装置使用起始脉冲和最大允许不均匀性来确定每个线圈的激励脉冲。相应的起始脉冲具有总持续时间。当控制装置激活与起始脉冲相对应的传输阵列和梯度磁体系统的线圈时，在激励体积中产生表现出小于最大允许不均匀性的第二实际不均匀性的磁化。控制装置确定起始脉冲的中间点，使得各个起始脉冲被分成与第一脉冲部分互补的第一脉冲部分和第二脉冲部分。第一脉冲部分对应于起始脉冲的相应低能部分，第二脉冲部分具有相应起始脉冲的高能部分。控制装置暂时地延伸第二脉冲部分并相应地按照幅度压缩第二脉冲部分。时间延长和幅度压缩的脉冲部分被用作激励脉冲。控制装置确定中间点，使得第一不均匀性仍然小于最大允许不均匀性。

9. 发明申请

US20100188086A1 MAGNETIC RESONANCE ANTENNA 有权
标题翻译：磁共振天线
公开(公告)号：US20100188086A1
公开(公告)日：2010-07-29
申请号：US12639481
申请日：2009-12-16
申请人： Razvan Lazar , Juergen Nistler
发明人： Razvan Lazar , Juergen Nistler
IPC分类号： G01R33/44
CPC分类号： G01R33/34076 , G01R33/3628
摘要： A magnetic resonance antenna has capacitive and inductive oscillating circuit antenna elements at least one radio-frequency switching element with which at least one of the oscillating circuit antenna elements that determine the resonant frequency of the magnetic resonance antenna, can be switched at radio frequency between a permeable state and an impermeable state to change the resonant frequency of the magnetic resonance antenna, so the antenna can be detuned simply, cost-effectively and efficiently.
摘要翻译：磁共振天线具有电容和电感振荡电路天线元件，至少一个射频切换元件，确定磁共振天线的谐振频率的至少一个振荡电路天线元件可以通过该至少一个射频开关元件在射频之间切换透气状态和不透水状态，以改变磁共振天线的谐振频率，因此天线可以简单，经济高效地失谐。

10. 发明授权

US6084410A Tunable radio-frequency unit for a magnetic resonance device 失效
标题翻译：用于磁共振设备的可调谐射频单元
公开(公告)号：US6084410A
公开(公告)日：2000-07-04
申请号：US98425
申请日：1998-06-17
申请人： Juergen Nistler
发明人： Juergen Nistler
IPC分类号： G01R33/36 , G01V3/00
CPC分类号： G01R33/3628
摘要： A tunable radio-frequency unit for a magnetic resonance device has a radio-frequency antenna and a radio-frequency signal line connected to a signal terminal of the radio-frequency antenna. The length of the radio-frequency signal line corresponds to a whole-number multiple of a half-wavelength of a radio-frequency signal on the radio-frequency signal line, for a given operating frequency of the radio-frequency antenna. For switching a short circuit on and off, a switching arrangement is connected at an end of the signal line lying opposite the signal terminal.
摘要翻译：用于磁共振装置的可调谐射频单元具有连接到射频天线的信号端子的射频天线和射频信号线。对于射频天线的给定工作频率，射频信号线的长度对应于射频信号线上的射频信号的半波长的整数倍。为了切换短路开关，在与信号端相对的信号线的一端连接开关装置。

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