公开(公告)号：US5208537A

公开(公告)日：1993-05-04

申请号：US788593

申请日：1991-11-06

申请人： Norbert Rietsch ,  Markus Vester ,  Horst Kroeckel

发明人： Norbert Rietsch ,  Markus Vester ,  Horst Kroeckel

IPC分类号： H01P5/08 ,  A61B5/055 ,  G01R33/36 ,  H03H7/40

CPC分类号： G01R33/3628

摘要： In a method for matching a transmission/reception antenna in a nuclear magnetic resonance imaging apparatus to the impedance of a high-frequency system which feeds the antenna, a directional coupler is used for acquiring respective signals corresponding to a forward voltage wave supplied to the antenna, and the associated return voltage wave. The amplitudes of the forward and return waves are calculated in a controller for all matching conditions of a transformation network, the transformation network being interconnected between the high frequency system and the antenna. When a tomogram is to be produced, the transformation network is set so that the antenna is matched as best as is possible to the high-frequency system. The same method can be used for matching an antenna which is only used for reception when producing tomograms.

摘要翻译： 在将核磁共振成像装置中的发送接收天线与馈送天线的高频系统的阻抗进行匹配的方法中，使用定向耦合器来取得与提供给天线的正向电压波对应的各信号 ，以及相关的返回电压波。 转换网络的所有匹配条件的控制器计算正向和返回波的幅度，变换网络在高频系统和天线之间互连。 当要产生断层图像时，转换网络被设置为使得天线能够尽可能地匹配到高频系统。 可以使用相同的方法来匹配仅在生成断层图像时用于接收的天线。

公开(公告)号：US20140347054A1

公开(公告)日：2014-11-27

申请号：US14283764

申请日：2014-05-21

申请人： Ralph Kimmlingen ,  Norbert Rietsch

发明人： Ralph Kimmlingen ,  Norbert Rietsch

IPC分类号： G01R33/38

CPC分类号： G01R33/38 ,  G01R33/3403 ,  G01R33/34084 ,  G01R33/341 ,  G01R33/3415

摘要： A magnetic resonance system includes a basic magnet that surrounds a cylindrical examination volume of the magnetic resonance system, the cylindrical examination volume defining a longitudinal axis, and a send structure configured to generate a high frequency excitation field (B1) in the examination volume. The high frequency excitation field is configured to excite an object to be examined in the examination volume, such that the object emits magnetic resonance signals. The basic magnet is configured to generate a basic magnetic field (B0) in the examination volume that is constant over time and at least substantially homogeneous spatially. The send structure includes at least first transmitting antennae and second transmitting antennae that are configured to load the examination volume with the high frequency excitation field (B1).

摘要翻译： 磁共振系统包括围绕磁共振系统的圆柱形检查体积的基本磁体，限定纵向轴线的圆柱形检查体积和被配置为在检查体积中产生高频激励场（B1）的发送结构。 高频激励场被配置为在检查体积中激发要检查的物体，使得物体发射磁共振信号。 基本磁体被配置为在检查体积中产生基本磁场（B0），该基本磁场在时间上是恒定的并且在空间上至少基本上均匀。 发送结构至少包括第一发射天线和第二发射天线，其被配置为用高频激励场（B1）加载检查音量。

公开(公告)号：US08108027B2

公开(公告)日：2012-01-31

申请号：US12213656

申请日：2008-06-23

申请人： Ludwig Kreischer ,  Jürgen Nistler ,  Martin Rausch ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Kreischer ,  Jürgen Nistler ,  Martin Rausch ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： A61B5/05

CPC分类号： G01R33/481 ,  A61B6/037 ,  A61B6/4417 ,  G01R33/56509

摘要： A combined positron emission tomography/magnetic resonance imaging apparatus including a positron emission tomography apparatus having at least one radiation detector, and a magnetic resonance imaging apparatus having at least one gradient coil and a radio-frequency antenna device. At least one embodiment of the combined position emission tomography/magnetic resonance imaging apparatus is developed further in that a first molding is provided, whose surface coincides with the inner shell of the at least one gradient coil, and a second molding is provided, whose surface coincides with the outer shell of the radiation detector, the distance between the two shells being virtually constant over the circumference of the shells, and a vacuum seal being arranged in each case along at least a first and a second circumferential line such that a closed cavity is formed between the vacuum seals.

摘要翻译： 包括具有至少一个辐射检测器的正电子发射断层摄影装置和具有至少一个梯度线圈和射频天线装置的磁共振成像装置的组合正电子发射断层摄影/磁共振成像装置。 组合位置发射断层摄影/磁共振成像装置的至少一个实施例被进一步开发，其中提供了第一模制件，其表面与至少一个梯度线圈的内壳重合，并且提供了第二模制件，其表面 与辐射检测器的外壳重合，两个壳体之间的距离在壳体的圆周上基本上恒定，并且真空密封件沿着至少第一和第二圆周线布置在每种情况下，使得闭合腔 形成在真空密封件之间。

公开(公告)号：US20080139924A1

公开(公告)日：2008-06-12

申请号：US11984479

申请日：2007-11-19

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： A61B5/055

CPC分类号： G01R33/28 ,  A61B5/0035 ,  A61B5/055 ,  A61B6/037 ,  G01R33/481 ,  G01T1/1603

摘要： A device for superposed magnetic resonance tomography and positron emission tomography imaging is disclosed. In at least one embodiment, the device includes a magnetic resonance tomography magnet, which defines a longitudinal axis; a magnetic resonance tomography gradient coil, arranged radially within the magnetic resonance tomography magnet; a magnetic resonance tomography RF coil, arranged radially within the magnetic resonance tomography gradient coil; and a multiplicity of positron emission tomography detection units, arranged in pairs lying opposite to one another about the longitudinal axis. In at least one embodiment, the many positron emission tomography detection units are arranged radially within the magnetic resonance tomography gradient coil and are arranged along the longitudinal axis next to the magnetic resonance tomography RF coil.

摘要翻译： 公开了用于叠加磁共振断层扫描和正电子发射断层摄影成像的装置。 在至少一个实施例中，该装置包括限定纵轴的磁共振断层摄影磁体; 磁共振断层摄影梯度线圈，位于磁共振断层摄影磁体内; 磁共振断层摄影RF线圈，径向设置在磁共振断层扫描梯度线圈内; 以及多个正电子发射断层摄影检测单元，成对地布置成围绕纵向轴线彼此相对。 在至少一个实施例中，许多正电子发射断层摄影检测单元径向布置在磁共振断层扫描梯度线圈内，并且沿着纵向轴线布置在磁共振断层摄影RF线圈旁边。

公开(公告)号：US20080033279A1

公开(公告)日：2008-02-07

申请号：US11882693

申请日：2007-08-03

申请人： Ralf Ladebeck ,  Diana Martin ,  Norbert Rietsch

发明人： Ralf Ladebeck ,  Diana Martin ,  Norbert Rietsch

IPC分类号： A61B5/055 ,  G01T1/164

CPC分类号： G01R33/481 ,  A61B6/037 ,  G01T1/1603

摘要： A device is disclosed for superposed MRI and PET imaging and includes an MRI tube that has a first field of view along its longitudinal direction, and a multiplicity of PET detection units arranged opposite one another in pairs about the longitudinal direction. In at least one embodiment the many PET detection units define a second field of view along the longitudinal direction, and their arrangement density along the longitudinal direction is optimized such that the second field of view substantially corresponds to the first field of view.

摘要翻译： 公开了一种用于重叠的MRI和PET成像的装置，并且包括沿着其纵向方向具有第一视场的MRI管和多个相对于纵向方向成对布置的PET检测单元。 在至少一个实施例中，许多PET检测单元沿着纵向方向限定第二视场，并且优化其沿着纵向方向的排列密度，使得第二视场基本上对应于第一视场。

公开(公告)号：US20080088309A1

公开(公告)日：2008-04-17

申请号：US11905250

申请日：2007-09-28

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： G01R33/34

CPC分类号： G01R33/3415 ,  G01R33/481

摘要： An RF antenna arrangement of a combined MR/PET system is disclosed. In at least one embodiment, the RF antenna arrangement includes a first part installed in the examination tunnel in a fashion fixed to the system such that it is arranged underneath the couch board when the latter is introduced, and a second part, which can be placed onto the couch board and be introduced into and withdrawn from the examination tunnel together with the couch board. In at least one embodiment, the second part is of dimensionally stable design and has a clear cross section that is adapted to the object to be examined. Consequently, the time outlay for applying the RF antenna is reduced, and the fixed position of the RF antenna enables a correction of the attenuation of gamma rays. Furthermore, a number of second parts having various diameters can be provided.

摘要翻译： 公开了一种组合MR / PET系统的RF天线装置。 在至少一个实施例中，RF天线布置包括以固定到系统的方式安装在检查隧道中的第一部分，使得它被布置在沙发板的下方，当其被引入时，第二部分可以被放置 进入沙发板，并与沙发板一起引入和从检查隧道中取出。 在至少一个实施例中，第二部分是尺寸稳定的设计，并且具有适于被检查物体的清晰的横截面。 因此，减少了施加RF天线的时间费用，并且RF天线的固定位置能够校正伽马射线的衰减。 此外，可以提供多个具有各种直径的第二部分。

公开(公告)号：US10036794B2

公开(公告)日：2018-07-31

申请号：US15639410

申请日：2017-06-30

申请人： Ralph Kimmlingen ,  Norbert Rietsch

发明人： Ralph Kimmlingen ,  Norbert Rietsch

IPC分类号： A61B5/055 ,  G01R33/563 ,  A61B6/04 ,  G01R33/54 ,  G01R33/561

CPC分类号： G01R33/56383 ,  A61B5/0555 ,  A61B6/0442 ,  G01R33/28 ,  G01R33/3415 ,  G01R33/36 ,  G01R33/543 ,  G01R33/561 ,  G01R33/563

摘要： A patient couch for a magnetic resonance tomography system and a magnetic resonance tomography system are provided. The patient couch includes a feed facility for radiofrequency energy having a plurality of conduction paths for feeding radiofrequency energy. The patient couch also includes a plurality of plug-in connectors for local coils having a transmit coil, and a distribution structure for the distribution of radiofrequency energy from the feed facility to the plug-in connectors.

公开(公告)号：US20160041250A1

公开(公告)日：2016-02-11

申请号：US14819418

申请日：2015-08-05

申请人： Ralph Kimmlingen ,  Norbert Rietsch

发明人： Ralph Kimmlingen ,  Norbert Rietsch

IPC分类号： G01R33/58 ,  G01R33/28

CPC分类号： G01R33/583 ,  G01R33/246 ,  G01R33/288 ,  G01R33/3415

摘要： A method and a magnetic resonance tomography (MRT) system are provided. The MRT system includes a controller configured to store a transmit vector that is established on a local-coil-specific basis. The transmit vector, for a specific local coil, indicates with which amplitudes and phases, transmit elements of the local coil may be controlled by a transmit device. The controller is configured to initiate a patient-specific calibration measurement on a patient to generate patient-specific calibration data representing a field distribution. The controller is also configured to determine deviations in the patient-specific calibration data from the stored transmit vector established on a local-coil-specific basis. The patient-specific calibration data is generated in the patient-specific calibration measurement on the patient and represents a field distribution. An imaging MRT measurement is not allowed if deviations exceed a threshold value, but is otherwise performed and is monitored by a monitoring device.

摘要翻译： 提供了一种方法和磁共振断层摄影（MRT）系统。 MRT系统包括被配置为存储在局部线圈特定基础上建立的发射矢量的控制器。 用于特定局部线圈的发射矢量指示可以由发射装置控制本地线圈的发射元件的哪些振幅和相位。 控制器被配置为启动对患者的患者特异性校准测量，以生成表示场分布的患者特异性校准数据。 控制器还被配置为根据在局部线圈特定基础上建立的存储的传输矢量来确定患者特定校准数据中的偏差。 患者特异性校准数据是在患者特定的患者的校准测量中生成的，并且表示场分布。 如果偏差超过阈值，否则进行成像MRT测量，否则执行并由监控设备监控。

公开(公告)号：US20150015261A1

公开(公告)日：2015-01-15

申请号：US14306576

申请日：2014-06-17

申请人： Ralph Kimmlingen ,  Norbert Rietsch

发明人： Ralph Kimmlingen ,  Norbert Rietsch

IPC分类号： G01R33/36 ,  G01R33/54 ,  G01R33/34

CPC分类号： G01R33/3671 ,  A61B5/055 ,  G01R33/34092 ,  G01R33/3415 ,  G01R33/421 ,  G01R33/543

摘要： The embodiments relate to a magnetic resonance imaging device, where the cladding of the patient bore of the MR imaging device includes a conductive layer.

摘要翻译： 实施例涉及磁共振成像装置，其中MR成像装置的患者孔的包层包括导电层。

公开(公告)号：US08073527B2

公开(公告)日：2011-12-06

申请号：US11905250

申请日：2007-09-28

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： A61B5/05

CPC分类号： G01R33/3415 ,  G01R33/481

摘要： An RF antenna arrangement of a combined MR/PET system is disclosed. In at least one embodiment, the RF antenna arrangement includes a first part installed in the examination tunnel in a fashion fixed to the system such that it is arranged underneath the couch board when the latter is introduced, and a second part, which can be placed onto the couch board and be introduced into and withdrawn from the examination tunnel together with the couch board. In at least one embodiment, the second part is of dimensionally stable design and has a clear cross section that is adapted to the object to be examined. Consequently, the time outlay for applying the RF antenna is reduced, and the fixed position of the RF antenna enables a correction of the attenuation of gamma rays. Furthermore, a number of second parts having various diameters can be provided.

摘要翻译： 公开了一种组合MR / PET系统的RF天线装置。 在至少一个实施例中，RF天线布置包括以固定到系统的方式安装在检查隧道中的第一部分，使得它被布置在沙发板的下方，当其被引入时，第二部分可以被放置 进入沙发板，并与沙发板一起引入和从检查隧道中取出。 在至少一个实施例中，第二部分是尺寸稳定的设计，并且具有适于被检查物体的清晰的横截面。 因此，减少了施加RF天线的时间费用，并且RF天线的固定位置能够校正伽马射线的衰减。 此外，可以提供多个具有各种直径的第二部分。