公开(公告)号：US5298863A

公开(公告)日：1994-03-29

申请号：US621040

申请日：1990-12-03

申请人： Stefan Nowak ,  Franz Schmitt ,  Hubertus Fischer

发明人： Stefan Nowak ,  Franz Schmitt ,  Hubertus Fischer

IPC分类号： G01R33/385 ,  G01R33/20

CPC分类号： G01R33/3852

摘要： A gradient coil for generating a periodically changing read-out gradient in a magnetic resonance imaging apparatus is operated in a series resonant circuit having a capacitor. One of the elements of the series resonant circuit is charged before the beginning of each read-out gradient. The gradient coil can be charged with current, or the capacitor can be charged with voltage. Such operation either avoids or significantly shortens the transient effect which occurs after excitation of the nuclear spins. The use of a series resonant circuit instead of a parallel resonant circuit significantly reduces the voltage load on the gradient amplifier, so that the gradient amplifier can be constructed simpler and more inexpensively.

摘要翻译： 在具有电容器的串联谐振电路中操作用于在磁共振成像装置中产生周期性变化的读出梯度的梯度线圈。 在每个读出梯度的开始之前，串联谐振电路的元件之一被充电。 梯度线圈可以充电电流，或者电容器可以充电电压。 这种操作可以避免或显着缩短在核自旋激发后发生的瞬态效应。 使用串联谐振电路代替并联谐振电路可以显着降低梯度放大器的电压负载，从而使梯度放大器的构造更简单，成本更低。

公开(公告)号：US5084675A

公开(公告)日：1992-01-28

申请号：US565951

申请日：1990-08-10

申请人： Hans-Erich Reinfelder ,  Hubertus Fischer

发明人： Hans-Erich Reinfelder ,  Hubertus Fischer

IPC分类号： A61B5/055 ,  G01R33/32 ,  G01R33/56

CPC分类号： G01R33/56 ,  G01R33/543 ,  G01R33/5608 ,  G01R33/5616

摘要： In the echo planar imaging (EPI) method of operating a nuclear magnetic resonance (magnetic resonance imaging) tomography apparatus, the necessary, rapid switching of gradients having a high amplitude usually cannot be achieved with square-wave gradients, and therefore a read-out gradient having a sinusoidal shape is generally used. Given a chronologically equidistant sampling of the nuclear magnetic resonance signal in the time domain, however, a sampling in the k-space with different rates is present. The bandwidth of the signal is proportional to the sampling rate in the k-space. In the method disclosed herein, bandwidth of a bandpass filter or a low-pass filter in the signal processing circuit for the nuclear magnetic resonance signal is adapted to the time dependent bandwith of the nuclear magnetic resonance signal, i.e., to the sampling rate in the k-space. The bandwidth is increased with increasing sampling rate. The signal-to-noise ratio is noticeably improved.

摘要翻译： 在操作核磁共振（磁共振成像）断层摄影装置的回波平面成像（EPI）方法中，通常使用方波梯度不能实现具有高振幅的梯度的必要的快速切换，因此读出 通常使用具有正弦形状的梯度。 然而，鉴于时域上的核磁共振信号的时间上等距离的采样，存在具有不同速率的k空间中的采样。 信号的带宽与k空间中的采样率成比例。 在本文公开的方法中，用于核磁共振信号的信号处理电路中的带通滤波器或低通滤波器的带宽适应于核磁共振信号的时间依赖带宽，即适应于 k空间。 带宽随采样率的增加而增加。 信噪比明显提高。

公开(公告)号：US4825159A

公开(公告)日：1989-04-25

申请号：US183231

申请日：1988-04-19

申请人： Arnulf Oppelt ,  Hubertus Fischer ,  Helmut Barfuss

发明人： Arnulf Oppelt ,  Hubertus Fischer ,  Helmut Barfuss

IPC分类号： A61B5/055 ,  G01R33/48 ,  G01R33/50 ,  G01R33/56 ,  G01R33/20

CPC分类号： G01R33/56 ,  G01R33/50

摘要： An examination subject is irradiated with a sequence of RF pulses. Negative gradient pulses G.sub.z3 and G.sub.y4, as well as a phase-coding gradient G.sub.x2 are generated preceding each RF pulse. Negative gradient pulses G.sub.z2 and G.sub.y1, as well as a phase-coding gradient G.sub.x1, are generated following each RF pulse. The phase-coding gradient G.sub.x1 is inverted relative to the phase-coding gradient G.sub.x2. The negative gradient pulse G.sub.y1 is followed by a positive gradient pulse G.sub.y2 which serves as a read-out gradient during which a first signal S.sub.1 is received. A positive gradient pulse G.sub.y3 is generated preceding the negative gradient pulse G.sub.y4, the positive gradient pulse G.sub.y3 serving as a read-out gradient during which a second signal S.sub.2 is received. Two signals having different T.sub.2 weighting are thus obtained in each measuring sequence, without extending the measuring time. Two images having different T.sub.2 contrast, and thus increased diagnostic value, can thus be produced.

摘要翻译： 用一系列RF脉冲照射检查对象。 在每个RF脉冲之前产生负梯度脉冲Gz3和Gy4，以及相位编码梯度Gx2。 在每个RF脉冲之后产生负梯度脉冲Gz2和Gy1以及相位编码梯度Gx1。 相位编码梯度Gx1相对于相位编码梯度Gx2反转。 负梯度脉冲Gy1之后是用作接收第一信号S1的读出梯度的正梯度脉冲Gy2。 在负梯度脉冲Gy4之前产生正梯度脉冲Gy3，正梯度脉冲Gy3用作接收第二信号S2的读出梯度。 因此，在每个测量序列中获得具有不同T2加权的两个信号，而不延长测量时间。 因此可以产生具有不同T2对比度，从而增加诊断价值的两个图像。

公开(公告)号：US20150059093A1

公开(公告)日：2015-03-05

申请号：US14476428

申请日：2014-09-03

申请人： Yvonne Candidus ,  Daniel Driemel ,  Hubertus Fischer ,  Wolfgang Kraus ,  Thomas Kundner ,  Martin Zigann ,  Stephan Zink

发明人： Yvonne Candidus ,  Daniel Driemel ,  Hubertus Fischer ,  Wolfgang Kraus ,  Thomas Kundner ,  Martin Zigann ,  Stephan Zink

IPC分类号： A61B5/055 ,  A61B6/04

CPC分类号： A61B5/0555 ,  A61B6/0407

摘要： A positioning apparatus configured to actively assist the support, positioning, or support and positioning of a patient on a patient support apparatus is provided. The positioning apparatus includes a sliding bearing unit to allow the positioning apparatus to be supported in a movable manner on the patient support apparatus, and a bearing unit with at least two bearing regions. At least a first of the at least two bearing regions is configured to support and/or provide support on the patient support apparatus, and at least a second of the at least two bearing regions is configured to assist the positioning of the patient.

摘要翻译： 提供了一种被配置为主动地帮助患者支撑，定位或支撑和定位患者在患者支撑装置上的定位装置。 定位装置包括滑动轴承单元，以允许定位装置以可移动方式支撑在患者支撑装置上，以及具有至少两个轴承区域的轴承单元。 所述至少两个轴承区域中的至少第一个被配置为在患者支撑设备上支撑和/或提供支撑，并且所述至少两个轴承区域中的至少一个支撑区域被配置为辅助患者的定位。

公开(公告)号：US20120126814A1

公开(公告)日：2012-05-24

申请号：US12950746

申请日：2010-11-19

申请人： Hubertus Fischer ,  Hiroyuki Fujita ,  Joseph Herczak ,  Lars Lauer

发明人： Hubertus Fischer ,  Hiroyuki Fujita ,  Joseph Herczak ,  Lars Lauer

IPC分类号： G01R33/44

CPC分类号： G01R33/34084 ,  G01R33/30 ,  G01R33/34007 ,  G01R33/34046 ,  G01R33/3415

摘要： In order to increase the signal to noise ratio, and thus increase the quality of images produced during pediatric MRI, a pediatric RF coil assembly includes a head coil and a flexible body coil in a single dedicated device shaped and sized for a child. The flexible body coil may be operable to at least partially surround and abut the body of the child located on the pediatric RF coil assembly, while the head coil may at least partially surround and abut the head of the child located on the pediatric RF coil assembly. In order to optimize workflow, the child may be positioned on the pediatric RF coil assembly in a first room and moved to a second room including an MRI system after the child is brought to sleep or sedated in the first room. The pediatric RF coil assembly and the child may be moved to the second room using a handle rotatably attached to the pediatric RF coil assembly, and may be positioned on a patient table of the MRI system when the imaging process is to begin.

摘要翻译： 为了增加信噪比，从而增加儿科MRI期间产生的图像的质量，儿科RF线圈组件包括头部线圈和柔性体线圈，其形状和尺寸适合于儿童。 柔性体线圈可以可操作以至少部分地围绕和邻接位于儿科RF线圈组件上的儿童的身体，而头部线圈可以至少部分地围绕和邻接位于儿科RF线圈组件上的儿童的头部 。 为了优化工作流程，孩子可以定位在第一房间中的小儿RF线圈组件上，并且在儿童在第一房间中睡眠或镇静之后移动到包括MRI系统的第二房间。 可以使用可旋转地附接到儿科RF线圈组件的手柄将小儿RF线圈组件和儿童移动到第二房间，并且当成像过程开始时，可​​将其放置在MRI系统的患者台上。

公开(公告)号：US07602189B2

公开(公告)日：2009-10-13

申请号：US12166725

申请日：2008-07-02

申请人： Guenther Decke ,  Hubertus Fischer ,  Wilfried Schnell

发明人： Guenther Decke ,  Hubertus Fischer ,  Wilfried Schnell

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  A61B5/0555 ,  A61B5/7203 ,  G01R33/34007 ,  G01R33/34084 ,  G01R33/56375

摘要： An examination platform for a magnetic resonance apparatus has a patient bed for supporting a patient, a local antenna device for acquisition of magnetic resonance signals, and a drive device arranged at the patient bed. The drive device is coupled with the local antenna device. The local antenna device thus can be moved parallel to the longitudinal axis of the patient bed independently of a movement of the patient bed. A magnetic resonance apparatus and a method for acquisition of image data of a patient employ such an examination platform.

摘要翻译： 用于磁共振装置的检查平台具有用于支撑患者的患者床，用于获取磁共振信号的本地天线装置和布置在患者床上的驱动装置。 驱动装置与本地天线装置耦合。 因此，本地天线装置可以独立于患者床的运动而平行于患者床的纵向轴线移动。 磁共振装置和用于获取患者的图像数据的方法采用这种检查平台。

公开(公告)号：US20090027053A1

公开(公告)日：2009-01-29

申请号：US12166725

申请日：2008-07-02

申请人： Guenther Decke ,  Hubertus Fischer ,  Wilfried Schnell

发明人： Guenther Decke ,  Hubertus Fischer ,  Wilfried Schnell

IPC分类号： G01R33/34 ,  A61B5/055

CPC分类号： G01R33/3415 ,  A61B5/0555 ,  A61B5/7203 ,  G01R33/34007 ,  G01R33/34084 ,  G01R33/56375

摘要： An examination platform for a magnetic resonance apparatus has a patient bed for supporting a patient, a local antenna device for acquisition of magnetic resonance signals, and a drive device arranged at the patient bed. The drive device is coupled with the local antenna device. The local antenna device thus can be moved parallel to the longitudinal axis of the patient bed independently of a movement of the patient bed. A magnetic resonance apparatus and a method for acquisition of image data of a patient employ such an examination platform.

摘要翻译： 用于磁共振装置的检查平台具有用于支撑患者的患者床，用于获取磁共振信号的本地天线装置和布置在患者床上的驱动装置。 驱动装置与本地天线装置耦合。 因此，本地天线装置可以独立于患者床的运动而平行于患者床的纵向轴线移动。 磁共振装置和用于获取患者的图像数据的方法采用这种检查平台。

公开(公告)号：US20080141461A1

公开(公告)日：2008-06-19

申请号：US11950683

申请日：2007-12-05

申请人： Peter Feld ,  Hubertus Fischer ,  Wilfried Schnell

发明人： Peter Feld ,  Hubertus Fischer ,  Wilfried Schnell

IPC分类号： A61G7/00

CPC分类号： H01R13/637 ,  A61B5/0555 ,  A61G2210/50 ,  H01R13/629 ,  H01R13/635

摘要： A patient bed, in particular for a magnetic resonance apparatus, has at least one socket for accommodation of a plug of a device (in particular a local coil) to be arranged at the patient bed. A generation of a force generator that automatically assists or effects the insertion or the unplugging of the plug is built into the socket or is associated with the socket.

摘要翻译： 特别是用于磁共振装置的患者床具有至少一个用于容纳待布置在患者床上的装置（特别是局部线圈）的插头的插座。 自动辅助或影响插头插拔的力发生器的一代内置在插座中或与插座相关联。

公开(公告)号：US06411837B1

公开(公告)日：2002-06-25

申请号：US09270353

申请日：1999-03-16

申请人： Hubertus Fischer

发明人： Hubertus Fischer

IPC分类号： A61B5055

CPC分类号： G01R33/56

摘要： In a method for the chronologically high-resolution magnetic resonance tomography of the female breast, a number of chronologically successive images of the breast are produced in a first slice orientation, and at least one tomogram is produced with a time correlation to the first images and in a perpendicular orientation relative to the first slice orientation.

摘要翻译： 在女性乳房的按时间顺序的高分辨率磁共振断层摄影的方法中，以第一切片方向产生乳房的多个按时间顺序连续的图像，并且产生与第一图像具有时间相关性的至少一个断层图像， 相对于第一切片方向垂直取向。

公开(公告)号：US5913863A

公开(公告)日：1999-06-22

申请号：US36446

申请日：1998-03-06

申请人： Hubertus Fischer ,  Heinrich Kolem ,  Manfred Bauer ,  Reiner Habrich ,  Sylvia Heywang-Koebrunner

发明人： Hubertus Fischer ,  Heinrich Kolem ,  Manfred Bauer ,  Reiner Habrich ,  Sylvia Heywang-Koebrunner

IPC分类号： A61B10/00 ,  A61B10/02 ,  A61B17/34 ,  A61B90/17 ,  G01R33/28 ,  A61B5/055

CPC分类号： A61B17/3403 ,  A61B90/17 ,  A61B10/0233 ,  G01R33/28

摘要： In a medical compression apparatus and a compression part therefor, the compression part has a number of access openings therein allowing an instrument, such as a biopsy needle, to be inserted through one of the openings into a body part compressed by the apparatus. The compression part allows the access openings to be alterable in size and/or shape.

摘要翻译： 在医疗用压缩装置及其压缩部中，压缩部具有许多入口，其中允许诸如活检针之类的器械通过其中一个开口插入被该装置压缩的身体部位。 压缩部件允许进出口的大小和/或形状可变。