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公开(公告)号：US09547064B2
公开(公告)日：2017-01-17
申请号：US13645093
申请日：2012-10-04
IPC分类号： G01R33/54 , G01R33/341 , G01R33/58
CPC分类号： G01R33/583 , G01R33/341
摘要： A method for the control of a magnetic resonance system is provided. In a test phase before a magnetic resonance measurement, a test high-frequency pulse with several parallel individual high-frequency pulses is transmitted with a transmitter antenna arrangement over various different high-frequency transmitter channels. At lower transmitter power, the test high-frequency pulse generates essentially the same field distribution as an excitation high-frequency pulse to be transmitted during a subsequent magnetic resonance measurement. A high-frequency field generated by this test high-frequency pulse is measured in at least one area of a local pulse arrangement, and on the basis of the high-frequency field measured, a high-frequency field value that is to be anticipated at the local coil arrangement during the subsequent magnetic resonance measurement is determined. The control of the magnetic resonance system during a later magnetic resonance measurement includes taking the high-frequency field value into account.
摘要翻译： 提供了一种用于控制磁共振系统的方法。 在磁共振测量之前的测试阶段，具有几个并联的单个高频脉冲的测试高频脉冲通过各种不同的高频发射机通道上的发射机天线布置发射。 在较低的发射机功率下，测试高频脉冲产生与随后的磁共振测量期间传输的激发高频脉冲基本相同的场分布。 由本测试高频脉冲产生的高频场是在局部脉冲布置的至少一个区域中测量的，并且基于所测量的高频场，测量在高频场中预期的高频场值 在随后的磁共振测量期间确定局部线圈布置。 在后来的磁共振测量中，磁共振系统的控制包括考虑高频场值。
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公开(公告)号：US20130082707A1
公开(公告)日：2013-04-04
申请号：US13645093
申请日：2012-10-04
IPC分类号： G01R33/54 , G01R33/341
CPC分类号： G01R33/583 , G01R33/341
摘要： A method for the control of a magnetic resonance system is provided. In a test phase before a magnetic resonance measurement, a test high-frequency pulse with several parallel individual high-frequency pulses is transmitted with a transmitter antenna arrangement over various different high-frequency transmitter channels. At lower transmitter power, the test high-frequency pulse generates essentially the same field distribution as an excitation high-frequency pulse to be transmitted during a subsequent magnetic resonance measurement. A high-frequency field generated by this test high-frequency pulse is measured in at least one area of a local pulse arrangement, and on the basis of the high-frequency field measured, a high-frequency field value that is to be anticipated at the local coil arrangement during the subsequent magnetic resonance measurement is determined. The control of the magnetic resonance system during a later magnetic resonance measurement includes taking the high-frequency field value into account.
摘要翻译： 提供了一种用于控制磁共振系统的方法。 在磁共振测量之前的测试阶段，具有几个并联的单个高频脉冲的测试高频脉冲通过各种不同的高频发射机通道上的发射机天线布置发射。 在较低的发射机功率下，测试高频脉冲产生与随后的磁共振测量期间传输的激发高频脉冲基本相同的场分布。 由本测试高频脉冲产生的高频场是在局部脉冲布置的至少一个区域中测量的，并且基于所测量的高频场，测量在高频场中预期的高频场值 在随后的磁共振测量期间确定局部线圈布置。 在后来的磁共振测量中，磁共振系统的控制包括考虑高频场值。
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3.发明申请MAGNETIC RESONANCE SYSTEM, ANTENNA SYSTEM, METHOD FOR DESIGNING A MAGNETIC RESONANCE SYSTEM AND METHOD TO GENERATE MAGNETIC RESONANCE EXPOSURES 有权磁共振系统，天线系统，用于设计磁共振系统的方法和产生磁共振曝光的方法公开(公告)号：US20090192382A1
公开(公告)日：2009-07-30
申请号：US12358378
申请日：2009-01-23
CPC分类号： G01R33/34046 , G01R33/3415 , G01R33/3678 , G01R33/5659 , Y10T29/49016
摘要： A magnetic resonance system obtaining magnetic resonance exposures of an examination subject, has an examination tunnel, a whole-body antenna with two connection terminals. The whole-body antenna cylindrically extends around the examination tunnel along a longitudinal axis. The system has a radio-frequency supply device in order to respectively supply the whole-body antenna with radio-frequency signals for emission of a radio-frequency field in the examination tunnel. The radio-frequency supply device has a radio-frequency generator for generation of a radio-frequency signal, a signal splitter that divides a radio-frequency signal coming from the radio-frequency generator into two partial signals that are phase-shifted by 90° relative to one another. Two radio-frequency feed lines are connected with the two connection terminals of the whole-body antenna. Via these radio-frequency feed lines, the two partial signals are fed into the whole-body antenna. The whole-body antenna has an intrinsic transmission characteristic such that a radio-frequency field is emitted that is elliptically polarized in a defined manner in a plane lying perpendicular to the longitudinal axis (at least in the unloaded state of the examination tunnel).
摘要翻译： 获得检查对象的磁共振曝光的磁共振系统具有检查隧道，具有两个连接端子的全身天线。 全身天线沿着纵向轴线围绕检查隧道圆周延伸。 该系统具有射频供给装置，以分别向全身天线提供用于在检查隧道中发射射频场的射频信号。 射频供给装置具有用于产生射频信号的射频发生器，将来自射频发生器的射频信号分割为相移90°的两个部分信号的信号分离器 相对于彼此。 两根射频馈线与全身天线的两个连接端子连接。 通过这些射频馈线，两个部分信号被馈送到全身天线。 全身天线具有固有的传输特性，使得在垂直于纵向轴线的平面中（至少在检查隧道的无负载状态）中以限定的方式发射出被椭圆偏振的射频场。
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4.发明授权公开(公告)号：US08362775B2
公开(公告)日：2013-01-29
申请号：US12358378
申请日：2009-01-23
CPC分类号： G01R33/34046 , G01R33/3415 , G01R33/3678 , G01R33/5659 , Y10T29/49016
摘要： A magnetic resonance system obtaining magnetic resonance exposures of an examination subject, has an examination tunnel, a whole-body antenna with two connection terminals. The whole-body antenna cylindrically extends around the examination tunnel along a longitudinal axis. The system has a radio-frequency supply device in order to respectively supply the whole-body antenna with radio-frequency signals for emission of a radio-frequency field in the examination tunnel. The radio-frequency supply device has a radio-frequency generator for generation of a radio-frequency signal, a signal splitter that divides a radio-frequency signal coming from the radio-frequency generator into two partial signals that are phase-shifted by 90° relative to one another. Two radio-frequency feed lines are connected with the two connection terminals of the whole-body antenna. Via these radio-frequency feed lines, the two partial signals are fed into the whole-body antenna. The whole-body antenna has an intrinsic transmission characteristic such that a radio-frequency field is emitted that is elliptically polarized in a defined manner in a plane lying perpendicular to the longitudinal axis (at least in the unloaded state of the examination tunnel).
摘要翻译： 获得检查对象的磁共振曝光的磁共振系统具有检查隧道，具有两个连接端子的全身天线。 全身天线沿着纵向轴线围绕检查隧道圆周延伸。 该系统具有射频供给装置，以分别向全身天线提供用于在检查隧道中发射射频场的射频信号。 射频供给装置具有用于产生射频信号的射频发生器，将来自射频发生器的射频信号分割为相移90°的两个部分信号的信号分离器 相对于彼此。 两根射频馈线与全身天线的两个连接端子连接。 通过这些射频馈线，两个部分信号被馈送到全身天线。 全身天线具有固有的传输特性，使得在垂直于纵向轴线的平面中（至少在检查隧道的无负载状态）中以限定的方式发射出被椭圆偏振的射频场。
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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。
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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。
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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。
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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.
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9.发明授权Method and device to monitor a module operating in a magnetic resonance system 有权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
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。
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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
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。
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