公开(公告)号：US07986141B2

公开(公告)日：2011-07-26

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： G01V3/00

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：US20100072997A1

公开(公告)日：2010-03-25

申请号：US12563331

申请日：2009-09-21

申请人： Hubertus Fischer ,  Wolfgang Renz

发明人： Hubertus Fischer ,  Wolfgang Renz

IPC分类号： G01R33/48 ,  G01R33/44

CPC分类号： G01R33/3621 ,  G01R33/3692

摘要： A magnetic resonance system has a patient receptacle and a base body. The patient receptacle has a subframe and a patient bed supported thereon so as to move a patient thereon through the base body. The base body has a basic field magnet system, a gradient system and an RF system that are operable to obtain an analog magnetic resonance signal from the patient. The patient receptacle has a signal conversion device composed of an A/D converter, a modulator, and a transmitter. The base body has a signal conversion device composed of a receiver and a demodulator. The A/D converter receives the magnetic resonance signal and digitizes it. The modulator modulates a carrier signal with the digitized magnetic resonance signal. The transmitter transmits the modulated carrier signal via an air gap to the receive. The receiver receives the transmitted carrier signal. The demodulator extracts the digitized magnetic resonance signal from the received carrier signal by demodulation and supplies it to an evaluation device for continuing evaluation.

摘要翻译： 磁共振系统具有患者容器和基体。 患者容器具有支撑在其上的子框架和患者床，以使患者在其上移动穿过基体。 基体具有可操作以从患者获得模拟磁共振信号的基本场磁体系统，梯度系统和RF系统。 患者插座具有由A / D转换器，调制器和发射器组成的信号转换装置。 基体具有由接收器和解调器构成的信号转换装置。 A / D转换器接收磁共振信号并对其进行数字化。 调制器用数字化的磁共振信号调制载波信号。 发射机通过气隙将调制载波信号发送到接收机。 接收机接收发送的载波信号。 解调器通过解调从接收的载波信号中提取数字化的磁共振信号，并将其提供给用于继续评估的评估装置。

公开(公告)号：US07518373B2

公开(公告)日：2009-04-14

申请号：US11924777

申请日：2007-10-26

申请人： Hubertus Fischer ,  Martin Hergt ,  Thomas Kundner

发明人： Hubertus Fischer ,  Martin Hergt ,  Thomas Kundner

IPC分类号： G01V3/00

CPC分类号： G01R33/341 ,  A61B5/055 ,  G01R33/3415 ,  G01R33/3628 ,  G01R33/3642 ,  G01R33/3657 ,  G01R33/3692

摘要： A magnetic resonance system that has a magnet system that generates magnetic fields in an excitation region, allowing nuclei in an examination subject in the excitation region to be excited to emit a magnetic resonance signal. A reception antenna device with multiple local coils for reception of the magnetic resonance signals is arranged in proximity to the examination subject, and has a base part and an attachment part. The attachment part can be placed on the base part such that the examination subject is located between the base part and the attachment part (6). The multiple local coils are respectively connected with an evaluation device for evaluation of magnetic resonance signals. To simply and reliably couple the antenna devices to an evaluation device with optimally few electrical conductors being located in the excitation region, the multiple local coils in the attachment part are respectively connected with the evaluation device via a base coupling element that is arranged at a predetermined base part location on the base part and an attachment coupling element is arranged at a predetermined attachment part location on the attachment part. The magnetic resonance signal received by the local coil can be fed to the evaluation device via the attachment coupling element and the base coupling element and as long as the attachment part is placed on the base part.

摘要翻译： 一种磁共振系统，其具有在激励区域中产生磁场的磁体系统，其允许励磁区域中的检查对象中的核被发射出磁共振信号。 具有用于接收磁共振信号的多个本地线圈的接收天线装置布置在检查对象附近，并且具有基部和附接部。 安装部可以放置在基部上，使检查对象位于基部与安装部（6）之间。 多个本地线圈分别与用于评估磁共振信号的评估装置连接。 为了将天线装置简单且可靠地耦合到评估装置，其中最佳较少的电导体位于激励区域中，附件部分中的多个局部线圈分别经由基本耦合元件与评估装置连接，该基座耦合元件布置在预定的 在基部上的基部位置和附接联接元件布置在附接部分上的预定的附接部位。 由本地线圈接收的磁共振信号可以通过附接联接元件和基座联接元件被馈送到评估装置，并且只要将附接部件放置在基部上即可。

公开(公告)号：US06262575B1

公开(公告)日：2001-07-17

申请号：US09161666

申请日：1998-09-29

申请人： Herbert Bruder ,  Hubertus Fischer

发明人： Herbert Bruder ,  Hubertus Fischer

IPC分类号： G01R3320

CPC分类号： G01R33/483 ,  A61B5/055 ,  A61B5/7285

摘要： In a method for producing an image of fat plaque employing nuclear magnetic resonance tomography, a radio-frequency excitation pulse is emitted with wavelet coding in the presence of a first gradient, refocusing pulses are emitted which are selective to the spectral frequency of fat, and the resulting nuclear magnetic resonance signals are read out in the presence of a further magnetic field gradient. An image of fat plaque with enhanced spatial resolution is thereby produced.

摘要翻译： 在使用核磁共振断层摄影法生产脂肪斑的图像的方法中，在存在第一梯度的情况下，利用小波编码发射射频激发脉冲，发射对于脂肪的光谱频率有选择性的重聚焦脉冲，以及 在存在另外的磁场梯度的情况下读出所得到的核磁共振信号。 由此产生具有增强的空间分辨率的脂肪斑块的图像。

公开(公告)号：US5162730A

公开(公告)日：1992-11-10

申请号：US611677

申请日：1990-11-13

申请人： Franz Schmitt ,  Hubertus Fischer

发明人： Franz Schmitt ,  Hubertus Fischer

IPC分类号： G01R33/561

CPC分类号： G01R33/5615 ,  G01R33/5616

摘要： A method, in the form of a pulse sequence for operating a magnetic resonance imaging tomography apparatus according to a modification of the echo planar method includes the generation of a read-out gradient consisting of sub-pulses having reversing polarity, the read-out gradient being activated in each scan after an RF excitation. A phase coding gradient, also consisting of a number of sub-pulses, is activated at each polarity change of the read-out gradient. The sub-pulses of the phase coding gradient have a polarity which alternates from sub-pulse to sub-pulse, and an amplitude-time area which increases in steps. An improved signal-to-noise ratio is achieved with this pulse sequence and N/2 ghosts are avoided.

摘要翻译： 根据回波平面方法的修改的用于操作磁共振成像断层摄影装置的脉冲序列形式的方法包括产生由具有反向极性的子脉冲，读出梯度 在RF激发后在每次扫描中被激活。 在读出的梯度的每个极性变化下激活也由多个子脉冲组成的相位编码梯度。 相位编码梯度的子脉冲具有从子脉冲到次脉冲交替的极性，以及逐步增加的幅度 - 时间区域。 通过该脉冲序列实现改善的信噪比，并避免N / 2个重影。

公开(公告)号：US5087880A

公开(公告)日：1992-02-11

申请号：US482963

申请日：1990-02-22

申请人： Herbert Bruder ,  Hubertus Fischer ,  Hans-Erich Reinfelder ,  Franz Schmitt

发明人： Herbert Bruder ,  Hubertus Fischer ,  Hans-Erich Reinfelder ,  Franz Schmitt

IPC分类号： A61B5/055 ,  G01R33/48 ,  G01R33/565

CPC分类号： G01R33/56572 ,  G01R33/56545

摘要： A method for operating a nuclear resonance imaging device given gradients of arbitrary shapes includes the steps of equidistantly sampling the nuclear magnetic resonance signals in the time domain with a sampling rate that satisfies the sampling theorem, the sampling taking place even given gradients having a non-rectangular pulse shape. Since non-equidistant sampling in the K-space would normally lead to image artifacts, the method includes the further step, to avoid such artifacts, of calculating measured values from the acquired samples by interpolation, these measured values being equidistant in the K-space, and being entered into a measurement matrix. The equidistant sampling in the K-space, which is complicated, is thus superfluous given gradients having an arbitrary pulse shape.

摘要翻译： 给定给定任意形状梯度的核共振成像装置的方法包括以满足采样定理的采样速率等时采样时域中的核磁共振信号的步骤，即使给定梯度具有非线性的采样， 矩形脉冲形状。 由于K空间中的非等距采样通常会导致图像伪影，所以该方法还包括进一步的步骤，为了避免这种伪像，通过插值从所采集的样本中计算测量值，这些测量值在K空间中是等距的 ，并输入测量矩阵。 因此，复杂的K空间中的等距采样因此是具有任意脉冲形状的给定梯度的多余采样。

公开(公告)号：US5068609A

公开(公告)日：1991-11-26

申请号：US524344

申请日：1990-05-16

申请人： Herbert Bruder ,  Hubertus Fischer ,  Franz Schmitt ,  Hans-Erich Reinfelder

发明人： Herbert Bruder ,  Hubertus Fischer ,  Franz Schmitt ,  Hans-Erich Reinfelder

IPC分类号： G01R33/565

CPC分类号： G01R33/56554 ,  G01R33/56545

摘要： A method for generating an image using nuclear magnetic resonance signals, which substantially eliminates the presence of so-called "N/2 ghosts," includes the steps of dividing a measurement matrix into a first sub-matrix containing the even-numbered rows of the measurement matrix and into a second sub-matrix having the odd-numbered rows of the measurement matrix, setting the entries in the remaining rows of the sub-matrices to zero, subjecting both sub-matrices to a Fourier transformation at least in the column direction, thereby generating respective intermediate image matrices, multiplying one of the intermediate image matrices by a factor which is calculated from the edge rows of the intermediate image matrices, and adding the intermediate image matrices after the multiplication.

摘要翻译： 使用核磁共振信号产生图像的方法基本上消除了所谓的“N / 2重影”的存在，包括以下步骤：将测量矩阵划分成包含偶数行的第一子矩阵 测量矩阵和具有测量矩阵的奇数行的第二子矩阵，将子矩阵的剩余行中的条目设置为零，使两个子矩阵至少在列方向上进行傅里叶变换 从而生成各自的中间图像矩阵，将中间图像矩阵中的一个乘以从中间图像矩阵的边缘行计算的因子，并且在相乘之后相加中间图像矩阵。