公开(公告)号：US07986142B2

公开(公告)日：2011-07-26

申请号：US12358498

申请日：2009-01-23

申请人： Ludwig Eberler ,  Juergen Nistler

发明人： Ludwig Eberler ,  Juergen Nistler

IPC分类号： G01V3/00

CPC分类号： G01R33/34076 ,  G01R33/3678 ,  G01R33/5659

摘要： A cylindrical antenna arrangement in a magnetic resonance apparatus has two feed points to feed in two partial signals, the two feed points being arranged on a cross-section of the antenna arrangement. The cross-section has a center point. A first angle is formed by the connection of a first feed point with the center point relative to a horizontal axis of the cross-section while a second angle is formed by the connection of a second feed point with the center point relative to the horizontal axis of the cross-section. An apparatus for controlling such an antenna arrangement has a device for signal splitting with two outputs and an input. A radio-frequency magnetic resonance signal is connected at the input. This signal is divided by the device for signal splitting into two partial signals of equal amplitude that are respectively supplied to an associated output. Each output of the device for signal splitting is connected with precisely one associated feed point of the antenna arrangement. An ellipse position in space is set for an elliptical polarization via the selection of the two angles. A device for phase adjustment is interposed between precisely one output of the device for signal splitting and the associated feed point in order to set an elliptical semi-axis ratio via variation of the phase difference of the two partial signals.

摘要翻译： 磁共振装置中的圆柱形天线装置具有两个馈送点，以馈送两个部分信号，两个馈送点布置在天线装置的横截面上。 横截面有一个中心点。 通过第一馈电点与中心点相对于横截面的水平轴线的连接形成第一角度，而第二角度通过第二馈电点与中心点相对于水平轴线的连接而形成 的横截面。 用于控制这种天线装置的装置具有用于具有两个输出和输入的信号分离的装置。 射频磁共振信号在输入端连接。 该信号由用于信号分解的装置分成两个分别提供给相关联的输出的相等幅度的部分信号。 用于信号分离的设备的每个输出端与天线装置的精确一个相关馈电点相连。 通过选择两个角度来设置空间中的椭圆位置用于椭圆偏振。 用于相位调整的装置插入用于信号分离的装置的精确一个输出端和相关联的馈电点之间，以便通过两个部分信号的相位差的变化来设定椭圆半轴比。

公开(公告)号：US20090189609A1

公开(公告)日：2009-07-30

申请号：US12358498

申请日：2009-01-23

申请人： Ludwig Eberler ,  Juergen Nistler

发明人： Ludwig Eberler ,  Juergen Nistler

IPC分类号： G01V3/00 ,  A61B5/055

CPC分类号： G01R33/34076 ,  G01R33/3678 ,  G01R33/5659

摘要： A cylindrical antenna arrangement in a magnetic resonance apparatus has two feed points to feed in two partial signals, the two feed points being arranged on a cross-section of the antenna arrangement. The cross-section has a center point. A first angle is formed by the connection of a first feed point with the center point relative to a horizontal axis of the cross-section while a second angle is formed by the connection of a second feed point with the center point relative to the horizontal axis of the cross-section. An apparatus for controlling such an antenna arrangement has a device for signal splitting with two outputs and an input. A radio-frequency magnetic resonance signal is connected at the input. This signal is divided by the device for signal splitting into two partial signals of equal amplitude that are respectively supplied to an associated output. Each output of the device for signal splitting is connected with precisely one associated feed point of the antenna arrangement. An ellipse position in space is set for an elliptical polarization via the selection of the two angles. A device for phase adjustment is interposed between precisely one output of the device for signal splitting and the associated feed point in order to set an elliptical semi-axis ratio via variation of the phase difference of the two partial signals.

摘要翻译： 磁共振装置中的圆柱形天线装置具有两个馈送点，以馈送两个部分信号，两个馈送点布置在天线装置的横截面上。 横截面有一个中心点。 通过第一馈电点与中心点相对于横截面的水平轴线的连接形成第一角度，而第二角度通过第二馈电点与中心点相对于水平轴线的连接而形成 的横截面。 用于控制这种天线装置的装置具有用于具有两个输出和输入的信号分离的装置。 射频磁共振信号在输入端连接。 该信号由用于信号分解的装置分成两个分别提供给相关联的输出的相等幅度的部分信号。 用于信号分离的设备的每个输出端与天线装置的精确一个相关馈电点相连。 通过选择两个角度来设置空间中的椭圆位置用于椭圆偏振。 用于相位调整的装置插入用于信号分离的装置的精确一个输出端和相关联的馈电点之间，以便通过两个部分信号的相位差的变化来设定椭圆半轴比。

公开(公告)号：US06781378B2

公开(公告)日：2004-08-24

申请号：US10369403

申请日：2003-02-19

申请人： Ludwig Eberler ,  Juergen Nistler

发明人： Ludwig Eberler ,  Juergen Nistler

IPC分类号： G01V300

CPC分类号： G01R33/34046

摘要： A radio-frequency antenna for a magnetic resonance system has a number of antenna rods and two end rings. The antenna rods are regularly arranged around an antenna axis and are connected at their respective rod ends to the end rings. When the antenna rods proceed essentially parallel to the antenna axis, they have a rod spacing in their middle region from the antenna axis that is smaller than a end ring spacing that at least one of the end rings exhibits from the antenna axis. When the antenna rods form an angle of inclination with the antenna axis, they have a rod spacing from the antenna axis at their end lying closer to the antenna axis that is smaller than an end ring spacing exhibited by the end ring that is connected to that rod end. In both version, rod spacing lies between 25 and 35 cm and is between 5 and 15 mm smaller than the end ring spacing.

摘要翻译： 用于磁共振系统的射频天线具有多个天线杆和两个端环。 天线杆规则地布置在天线轴线周围，并且在它们各自的杆端连接到端环。 当天线杆基本上平行于天线轴线延伸时，它们在与天线轴线的中间区域中具有小于至少一个端环从天线轴线呈现的端环间隔的杆间距。 当天线杆与天线轴线形成倾斜角时，它们的天线轴线的距离比天线轴线更靠近天线轴线，该距离小于端环的端环距离 杆子的末端。 在两种版本中，杆间距在25和35厘米之间，比端环间距小5到15毫米。

公开(公告)号：US06232548B1

公开(公告)日：2001-05-15

申请号：US09401447

申请日：1999-09-22

申请人： Ludwig Eberler ,  Juergen Nistler

发明人： Ludwig Eberler ,  Juergen Nistler

IPC分类号： H05K900

CPC分类号： G01R33/422

摘要： A radio-frequency shield for a diagnostic magnetic resonance apparatus has a hollow-cylindrical carrier composed of a dielectric, a first electrically conductive coating arranged at an inside of the carrier and provided with axially aligned separating slots, and A second electrically conductive coating arranged at an outside of the carrier and provided with axially aligned separating slots. The separating slots in the first and second coatings, respectively, are offset relative to one another in a circumferential direction. The first coating has slotted end regions at the ends of the carrier and at least one slofted middle region between the end regions. The separating slots arranged in the end regions are transverse slots that are arranged at axially inwardly disposed ends of the separating slots.

摘要翻译： 用于诊断磁共振装置的射频屏蔽具有由电介质构成的中空圆柱形载体，布置在载体内部并设置有轴向对准的分隔槽的第一导电涂层和布置在第二导电涂层上的第二导电涂层 在载体的外部并且设置有轴向对准的分隔槽。 分别在第一和第二涂层中的分隔槽在圆周方向上相对于彼此偏移。 第一涂层在载体的端部处具有开槽端区域，以及在端部区域之间的至少一个堆积的中间区域。 布置在端部区域中的分隔槽是横向狭槽，其布置在分离槽的轴向向内设置的端部。

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。

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。

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。

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.

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。

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。