公开(公告)号：US07664541B2

公开(公告)日：2010-02-16

申请号：US11363918

申请日：2006-02-28

申请人： Jian Min Wang ,  De He Weng

发明人： Jian Min Wang ,  De He Weng

IPC分类号： A61B5/05 ,  G01V3/00

CPC分类号： A61B5/4869 ,  G01R33/4828

摘要： In a multi-channel magnetic resonance imaging reconstruction method for water-fat separation, one in-phase image and two opposed-phase images are acquired with multiple reception coils in respective channels. The sensitivity distribution of the coils of the respective channels is calculated. The images of respective channels are merged dependent on the sensitivity distribution. A phase difference between the two opposed-phase images is calculated. At lease one characteristic region of the in-phase image is detected, which is used as a criterion for phase correction. The phases of the opposed-phase images are corrected and images of water and fat are calculated. The method provides stable and reliable imaging, has a short reconstruction time and also solves the problem that images of water and fat may be exchanged.

摘要翻译： 在用于水脂分离的多通道磁共振成像重建方法中，在相应通道中采用多个接收线圈获取一个同相图像和两个相对相位图像。 计算各个通道的线圈的灵敏度分布。 根据灵敏度分布合并各个通道的图像。 计算两个相对相位图像之间的相位差。 检测到同相图像的至少一个特征区域，其用作相位校正的标准。 校正相对相图像的相位，并计算水和脂肪的图像。 该方法提供稳定可靠的成像，缩短重建时间，解决了水和脂肪图像可以交换的问题。

公开(公告)号：US07631411B2

公开(公告)日：2009-12-15

申请号：US10878584

申请日：2004-06-28

申请人： Jian Mao ,  Jian Min Wang ,  Heng Liu ,  Anbo Wu

发明人： Jian Mao ,  Jian Min Wang ,  Heng Liu ,  Anbo Wu

IPC分类号： B23P25/00 ,  B23P21/00

CPC分类号： G01R33/3806 ,  G01R33/3802 ,  Y10T29/49826 ,  Y10T29/49885 ,  Y10T29/49904 ,  Y10T29/49947 ,  Y10T29/49948

摘要： A technique is provided for manufacturing a support structure for a source of magnetic field in a magnetic resonance imaging system. The technique includes assembling a plurality of layers of a material permeable to magnetic field to form a first support structure, assembling a plurality of layers of a material permeable to magnetic field to form a second support structure, providing at least one of a plate and a post made of a material permeable to magnetic field to form a third support structure, and assembling the first support structure, the second support structure and the third support structure. The first support structure is associated with the second support structure through the third support structure.

摘要翻译： 提供了一种制造用于磁共振成像系统中的磁场源的支撑结构的技术。 该技术包括组装可渗透磁场的材料的多个层以形成第一支撑结构，组装多个可渗透磁场的材料层以形成第二支撑结构，提供板和 由可渗透磁场的材料制成的柱，以形成第三支撑结构，以及组装第一支撑结构，第二支撑结构和第三支撑结构。 第一支撑结构通过第三支撑结构与第二支撑结构相关联。

公开(公告)号：US07609063B2

公开(公告)日：2009-10-27

申请号：US12018923

申请日：2008-01-24

申请人： Ting Qiang Xue ,  Jian Min Wang ,  Yan Hong Chen

发明人： Ting Qiang Xue ,  Jian Min Wang ,  Yan Hong Chen

IPC分类号： G01V3/00

CPC分类号： G01R33/3642 ,  G01R33/307 ,  G01R33/34007 ,  G01R33/341

摘要： A mobile positioning device for an MRI inductively coupled coil, has at least one pair of coupled coils which are coupled with each other for transmitting signals, wherein one of the at least one pair of coupled coils is deployed on a surface of a patient's bed. A moveable platform is provided that can move in a direction parallel to the patient's bed, and the other one of the at least one pair of coupled coils is deployed on the moveable platform opposite to the coupled coil deployed on the patient's bed. The device can be driven by a motor or a spring. When the patient's bed needs to be placed at different positions for an examination, the coupled coil deployed on the moveable platform can be aligned completely and in parallel to the coupled coil fixed on the patient's bed by moving the moveable platform, so as to achieve the best coupling effects.

摘要翻译： 用于MRI电感耦合线圈的移动定位装置具有至少一对耦合的线圈，它们彼此耦合以传输信号，其中所述至少一对耦合线圈中的一个被布置在患者床的表面上。 提供可移动的平台，其可以平行于患者床的方向移动，并且所述至少一对耦合线圈中的另一个耦合线圈展开在与部署在患者床上的耦合线圈相对的可移动平台上。 该装置可以由电动机或弹簧驱动。 当患者的床需要放置在不同的位置进行检查时，可移动可移动平台的部分在可移动平台上的耦合线圈可以完全对准并且平行于固定在患者床上的耦合线圈，以便实现 最佳耦合效应。

公开(公告)号：US20090243612A1

公开(公告)日：2009-10-01

申请号：US12394705

申请日：2009-02-27

申请人： Hua Bin Zhu ,  Yan Hong Chen ,  Hai Ning Wang ,  Jian Min Wang

发明人： Hua Bin Zhu ,  Yan Hong Chen ,  Hai Ning Wang ,  Jian Min Wang

IPC分类号： G01R33/34

CPC分类号： G01R33/34046 ,  G01R33/3415 ,  G01R33/365

摘要： A volume coil for a magnetic resonance imaging system is composed of a number of coil units. In the coil, there are overlapped parts between two adjacent ones of the coil units for eliminating coupling between these two adjacent coil units. Two next-adjacent ones of the coil units, which are separated from each other by one coil unit, are each provided with an inductor, and these two inductors are coupled with each other for eliminating coupling between these two next-adjacent coil units. All coil units are collected on one axial end face of the coil. Two coil units in the coil that are neither adjacent coil units nor next-adjacent coil units are connected with each other on the end face by a capacitance circuit or a inductance circuit for eliminating the coupling between these two coil units that are neither adjacent coil units nor next-adjacent coil units. The coupling among the various coil units is relatively thoroughly eliminated, and the signal-to-noise ratio of the signal received by the coil is increased.

摘要翻译： 用于磁共振成像系统的体积线圈由多个线圈单元组成。 在线圈中，在两个相邻的线圈单元之间存在重叠部分，用于消除这两个相邻线圈单元之间的耦合。 通过一个线圈单元彼此分离的两个相邻的线圈单元中的每一个分别设置有电感器，并且这两个电感器彼此耦合以消除这两个相邻的线圈单元之间的耦合。 所有线圈单元被收集在线圈的一个轴向端面上。 线圈中两个不是相邻的线圈单元和下一个相邻的线圈单元的线圈单元在端面上通过电容电路或电感电路彼此连接，用于消除这两个线圈单元之间的耦合，这两个线圈单元既不是相邻的线圈单元 也不是下一个相邻的线圈单元。 各线圈单元之间的耦合被相对彻底地消除，并且由线圈接收的信号的信噪比增加。

公开(公告)号：US20080180103A1

公开(公告)日：2008-07-31

申请号：US12018923

申请日：2008-01-24

申请人： Ting Qiang Xue ,  Jian Min Wang ,  Yan Hong Chen

发明人： Ting Qiang Xue ,  Jian Min Wang ,  Yan Hong Chen

IPC分类号： G01R33/32

CPC分类号： G01R33/3642 ,  G01R33/307 ,  G01R33/34007 ,  G01R33/341

摘要： A mobile positioning device for an MRI inductively coupled coil, has at least one pair of coupled coils which are coupled with each other for transmitting signals, wherein one of the at least one pair of coupled coils is deployed on a surface of a patient's bed. A moveable platform is provided that can move in a direction parallel to the patient's bed, and the other one of the at least one pair of coupled coils is deployed on the moveable platform opposite to the coupled coil deployed on the patient's bed. The device can be driven by a motor or a spring. When the patient's bed needs to be placed at different positions for an examination, the coupled coil deployed on the moveable platform can be aligned completely and in parallel to the coupled coil fixed on the patient's bed by moving the moveable platform, so as to achieve the best coupling effects.

摘要翻译： 用于MRI电感耦合线圈的移动定位装置具有至少一对耦合的线圈，它们彼此耦合以传输信号，其中所述至少一对耦合线圈中的一个被布置在患者床的表面上。 提供可移动的平台，其可以平行于患者床的方向移动，并且所述至少一对耦合线圈中的另一个耦合线圈展开在与部署在患者床上的耦合线圈相对的可移动平台上。 该装置可以由电动机或弹簧驱动。 当患者的床需要放置在不同的位置进行检查时，可移动可移动平台的部分在可移动平台上的耦合线圈可以完全对准并且平行于固定在患者床上的耦合线圈，以便实现 最佳耦合效应。

公开(公告)号：US07279895B2

公开(公告)日：2007-10-09

申请号：US11322884

申请日：2005-12-30

申请人： Jian Min Wang ,  Bida Zhang

发明人： Jian Min Wang ,  Bida Zhang

IPC分类号： G01V3/00

CPC分类号： G01R33/5611

摘要： The present invention proposes a fast GeneRalized Autocalibrating Partially Parallel Acquisition (GRAPPA) image reconstruction algorithm for magnetic resonance imaging. The algorithm simplifies data fitting and channel merging in the process of reconstruction into a one-step linear calculation. Parameters needed to perform the linear calculation step can be pre-calculated and stored, thereby greatly increasing the image reconstruction speed and solving the problem of the relatively long image reconstruction time needed by prior art GRAPPA algorithms. Also, the algorithm can employ a weighting matrix to conveniently compare signal-to-noise ratio losses of images brought by different types of reconstruction methods in image domain and frequency domain.

摘要翻译： 本发明提出了用于磁共振成像的快速GeneRalized自动校准部分并行获取（GRAPPA）图像重建算法。 该算法将重建过程中的数据拟合和信道合并简化为一步线性计算。 可以预先计算和存储执行线性计算步骤所需的参数，从而大大提高图像重建速度，并解决现有技术GRAPPA算法所需的较长图像重构时间的问题。 此外，该算法可以采用加权矩阵来方便地比较图像域和频域中不同类型的重建方法带来的图像的信噪比损失。

公开(公告)号：US07084403B2

公开(公告)日：2006-08-01

申请号：US10689361

申请日：2003-10-17

申请人： Alok Mani Srivastava ,  Steven Jude Duclos ,  Qun Deng ,  James Walter Leblanc ,  Tie Bond Gao ,  Jian Min Wang ,  Lucas Lemar Clarke

发明人： Alok Mani Srivastava ,  Steven Jude Duclos ,  Qun Deng ,  James Walter Leblanc ,  Tie Bond Gao ,  Jian Min Wang ,  Lucas Lemar Clarke

IPC分类号： G01T1/20

CPC分类号： G01T1/2023 ,  C09K11/7772

摘要： Scintillator materials based on certain types of halide-lanthanide matrix materials are described. In one embodiment, the matrix material contains a mixture of lanthanide halides, i.e., a solid solution of at least two of the halides, such as lanthanum chloride and lanthanum bromide. In another embodiment, the matrix material is based on lanthanum iodide alone, which must be substantially free of lanthanum oxyiodide. The scintillator materials, which can be in monocrystalline or polycrystalline form, also include an activator for the matrix material, e.g., cerium. Radiation detectors that use the scintillators are also described, as are related methods for detecting high-energy radiation.

摘要翻译： 描述了基于某些类型的卤化物 - 镧系元素基质材料的闪烁体材料。 在一个实施方案中，基质材料含有镧系元素卤化物的混合物，即至少两种卤化物的固溶体，例如氯化镧和溴化镧。 在另一个实施方案中，基质材料仅基于碘化镧，其必须基本上不含氧化镧镧。 可以是单晶或多晶形式的闪烁体材料还包括用于基质材料例如铈的活化剂。 还描述了使用闪烁体的辐射检测器，以及用于检测高能量辐射的相关方法。

公开(公告)号：US09778330B2

公开(公告)日：2017-10-03

申请号：US13931611

申请日：2013-06-28

申请人： Ralph Oppelt ,  Jian Min Wang

发明人： Ralph Oppelt ,  Jian Min Wang

IPC分类号： G01R33/28 ,  H04B3/02 ,  G01R33/36 ,  H04B3/50 ,  G01R33/3415

CPC分类号： G01R33/28 ,  G01R33/3415 ,  G01R33/3621 ,  H04B3/02 ,  H04B3/50

摘要： A method for simultaneous transmission of at least two high-frequency transmission signals via a common high-frequency line includes providing at least two input signals at respective inlet ports. The input signals are signals of a same carrier frequency. From the input signals, respective transmission signals are provided with different transmission frequencies from each other and from the carrier frequency by mixing the input signals using one frequency mixer each. The frequency mixers are supplied with respective mixer oscillator signals. The transmission signals are transmitted via the common high-frequency line. The mixer oscillator signals are provided from a same oscillator signal.

公开(公告)号：US09513350B2

公开(公告)日：2016-12-06

申请号：US13787024

申请日：2013-03-06

申请人： Wen Ming Li ,  Yu Ye Liu ,  Jian Min Wang

发明人： Wen Ming Li ,  Yu Ye Liu ,  Jian Min Wang

IPC分类号： G01R33/34 ,  G01R33/36 ,  G01R33/3415

CPC分类号： G01R33/34092 ,  G01R33/3415 ,  G01R33/3664

摘要： An RF coil device and an MRI system are provided. The RF coil device includes m coil elements, where m is an integer greater than 1. The RF coil device also includes an RF switch control unit including n output terminals and m input terminals connected to the m coil elements, respectively, where n is an integer greater than or equal to 1 and less than m. The RF coil device includes a decoder for outputting a control signal to the RF switch control unit according to a received control command. The RF switch control unit connects each of not more than n input terminals to a different output terminal according to the control signal.

摘要翻译： 提供RF线圈装置和MRI系统。 RF线圈装置包括m个线圈元件，其中m是大于1的整数。RF线圈装置还包括RF开关控制单元，其分别包括n个输出端子和m个输入端子，其连接到m个线圈元件，其中n是 大于或等于1且小于m的整数。 RF线圈装置包括：解码器，用于根据接收到的控制命令向RF开关控制单元输出控制信号。 RF开关控制单元根据控制信号将不多于n个输入端子中的每一个连接到不同的输出端子。

公开(公告)号：US20140002087A1

公开(公告)日：2014-01-02

申请号：US13931611

申请日：2013-06-28

申请人： Ralph Oppelt ,  Jian Min Wang

发明人： Ralph Oppelt ,  Jian Min Wang

IPC分类号： G01R33/28 ,  H04B3/02

CPC分类号： G01R33/28 ,  G01R33/3415 ,  G01R33/3621 ,  H04B3/02 ,  H04B3/50

摘要： A method for simultaneous transmission of at least two high-frequency transmission signals via a common high-frequency line includes providing at least two input signals at respective inlet ports. The input signals are signals of a same carrier frequency. From the input signals, respective transmission signals are provided with different transmission frequencies from each other and from the carrier frequency by mixing the input signals using one frequency mixer each. The frequency mixers are supplied with respective mixer oscillator signals. The transmission signals are transmitted via the common high-frequency line. The mixer oscillator signals are provided from a same oscillator signal.

摘要翻译： 用于经由公共高频线同时传输至少两个高频传输信号的方法包括在各个入口端口提供至少两个输入信号。 输入信号是相同载波频率的信号。 根据输入信号，通过使用一个混频器混合输入信号，各个传输信号彼此之间和从载波频率提供不同的传输频率。 混频器提供相应的混频器振荡器信号。 发送信号通过公共高频线路发送。 混频器振荡器信号由相同的振荡器信号提供。