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1. 发明授权

US5751145A MR imaging method and apparatus with water signal supression 失效
标题翻译：具有水信号抑制的MR成像方法和装置
公开(公告)号：US5751145A
公开(公告)日：1998-05-12
申请号：US689786
申请日：1996-08-13
申请人： Koji Shimizu
发明人： Koji Shimizu
IPC分类号： G01R33/48 , A61B5/055 , G01R33/54 , A01B5/055
CPC分类号： G01R33/4835
摘要： An MR imaging method using NMR phenomenon and including the following steps: emitting a first group of RF pulses including a first inversion RF pulse, and excitation RF pulses emitted to excite a plurality of slices in a predetermined order; emitting slice-selecting gradient field pulses; emitting phase-encoding gradient field pulses; collecting a first group of echo signals; emitting a second group of RF pulses including a second inversion RF pulse having substantially the same frequency band as the first inversion RF pulse, and second excitation RF pulses emitted to excite the plurality of slices in a reverse order; emitting slice-selecting gradient field pulses; emitting phase-encoding gradient field pulses; collecting a second group of echo signals; repeating this pulse sequence while varying the phase-encoding gradient field pulses; adding two data corresponding to each slice, which data are included, respectively, in a first group of data and in a second group of data, thereby forming a new group of data; and reconstructing slice images.
摘要翻译：一种使用NMR现象的MR成像方法，包括以下步骤：发射包括第一反转RF脉冲的第一组RF脉冲和发射的激发RF脉冲以按预定顺序激发多个切片; 发射切片选择梯度场脉冲; 发射相位编码梯度场脉冲; 收集第一组回波信号; 发射第二组RF脉冲，包括具有与第一反相RF脉冲基本相同的频带的第二反转RF脉冲，以及发射的第二激发RF脉冲以相反的顺序激发多个切片; 发射切片选择梯度场脉冲; 发射相位编码梯度场脉冲; 收集第二组回波信号; 在改变相位编码梯度场脉冲的同时重复该脉冲序列; 在第一组数据和第二组数据中分别加入与每个切片相对应的两个数据，哪些数据被包括在内，从而形成新的数据组; 并重建切片图像。

2. 发明授权

US5623927A Multiple patient breast scanning on a magnetic resonance imaging apparatus 失效
标题翻译：在磁共振成像装置上进行多个患者乳房扫描
公开(公告)号：US5623927A
公开(公告)日：1997-04-29
申请号：US456508
申请日：1995-06-01
申请人： Raymond V. Damadian , Jan Votruba
发明人： Raymond V. Damadian , Jan Votruba
IPC分类号： A61B5/055 , G01R33/28 , G01R33/34 , G01R33/58 , A01B5/055
CPC分类号： G01R33/381 , A61B5/0555 , G01R33/34046 , G01R33/341 , G01R33/58
摘要： Magnetic resonance imaging systems typically have a single patient handling system which allows the sequential scanning of individual patients. Such apparatus limit patient throughput and consequently the utility of magnetic resonance imaging systems. The present invention includes apparatus and methods to enhance patient throughput of a magnetic resonance imaging system, particularly as related to imaging the breast region of patients. Two distinct components of a magnetic resonance imaging procedure are defined: the patient handling time and the scan protocol time, and these time components are multiplexed to enhance patient throughput. This is achieved by addition of patient handling systems at additional apertures as exist on the primary field magnet and which provide access to the imaging volume. It is thus possible, for example, to have the patient handling time component of one patient overlap with the scan protocol time component of a second patient. Additionally, the present invention includes radio frequency antennas and positioning devices designed for use in scanning the breast region of patients.
摘要翻译：磁共振成像系统通常具有单个患者处理系统，其允许单个患者的顺序扫描。这种装置限制了患者吞吐量，从而限制了磁共振成像系统的效用。本发明包括用于增强磁共振成像系统的患者通过量的装置和方法，特别是与患者的乳房区域的成像有关。定义了磁共振成像过程的两个不同的组成部分：患者处理时间和扫描协议时间，并且这些时间分量被复用以增强患者的吞吐量。这通过在主场磁体上存在的另外的孔中添加患者处理系统并且提供对成像体积的访问来实现。因此，例如可以使一名患者的患者处理时间分量与第二患者的扫描协议时间分量重叠。另外，本发明包括设计用于扫描患者乳房区域的射频天线和定位装置。

3. 发明授权

US5390672A NMR liver coil 失效
标题翻译： NMR肝线圈
公开(公告)号：US5390672A
公开(公告)日：1995-02-21
申请号：US134294
申请日：1993-10-08
申请人： Randall W. Jones
发明人： Randall W. Jones
IPC分类号： G01R33/28 , G01R33/34 , A01B5/055
CPC分类号： G01R33/34084 , G01R33/34
摘要： A NMR liver coil includes an anterior housing supporting a plurality of NMR coils pivotally connected to a posterior housing supporting a NMR coil. The anterior housing is curved from a generally horizontal upper end to a generally vertical lower end, and pivotally connected to a generally vertically oriented flange forming the upper end of the posterior housing. The posterior housing is curved from the forward to the rearward end to conform to the curvature of a conventional NMR patient table, with the flange curving rearwardly and upwardly from the upper end of the posterior housing. The anterior housing is operably and pivotally connected to the posterior housing about a pair of pivotal axes, such that pivotal movement about a first pivotal axis will permit movement of the anterior housing from a working position with the anterior housing upper end oriented generally horizontally over the posterior housing, to an open position with the upper end of the anterior housing generally vertical. Pivotal movement about the second pivotal axis permits adjustability of the anterior housing within the working position, varying the distance between the anterior housing upper end and posterior housing to permit various patient sizes between the anterior and posterior housings.
摘要翻译： NMR肝线圈包括支撑多个NMR线圈的前壳体，其枢转地连接到支撑NMR线圈的后壳体。前壳体从大致水平的上端弯曲成大致垂直的下端，并且枢转地连接到形成后壳体的上端的大致垂直定向的凸缘。后壳体从前向弯曲到后端，以符合常规NMR患者台的曲率，其中凸缘从后壳体的上端向后和向上弯曲。前壳体围绕一对枢转轴线可操作地枢转地连接到后壳体，使得围绕第一枢转轴线的枢转运动将允许前壳体从工作位置移动，其中前壳体上端部大致水平地定向在后壳体到达前壳体的上端大致垂直的打开位置。围绕第二枢转轴的枢转运动允许前壳体在工作位置内的可调性，改变前壳体上端和后壳体之间的距离，以允许在前壳体和后壳体之间的各种患者尺寸。

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