公开(公告)号：US08035389B2

公开(公告)日：2011-10-11

申请号：US12347348

申请日：2008-12-31

申请人： Yao Xing ,  Yang Wang ,  Yan Hong Chen ,  Hua Bin Zhu ,  Jian Min Wang

发明人： Yao Xing ,  Yang Wang ,  Yan Hong Chen ,  Hua Bin Zhu ,  Jian Min Wang

IPC分类号： G01V3/00

CPC分类号： G01R33/3664 ,  G01R33/3415

摘要： A radio frequency (RF) switch device has at least two RF switch units, each RF switch unit having an output terminal and at least two input terminals. The RF switch units select one channel of RF signals from several channels of the RF signals that are supplied as inputs to their input terminals for emission as an output from their output terminals. A magnetic resonance imaging system and an RF signal transmission method employ such an RF switch device. The use of such an RF switch device reduces the number of channels of the RF signals that need to be further transmitted, which in turn reduces the number of the corresponding long RF cable channels and the number of channels of the subsequent devices, thereby preventing waste and reducing the cost of the system. Moreover, if the subsequent devices include a receiver coil channel selector, then the complexity of the receiver coil channel selector will also be reduced as the number of RF signal channels is decreased.

摘要翻译： 射频（RF）开关装置具有至少两个RF开关单元，每个RF开关单元具有输出端和至少两个输入端。 RF开关单元从RF信号的多个通道中选择一个通道的RF信号，该信号作为输入端被提供给输入端，用于从其输出端输出。 磁共振成像系统和RF信号传输方法采用这种RF开关装置。 使用这种RF开关装置减少需要进一步传输的RF信号的信道数量，这反过来减少对应的长RF电缆信道的数量和后续设备的信道数量，从而防止浪费 并降低系统的成本。 此外，如果随后的设备包括接收器线圈通道选择器，则随着RF信号通道的数量减少，接收器线圈通道选择器的复杂度也将减小。

公开(公告)号：US20090174498A1

公开(公告)日：2009-07-09

申请号：US12347348

申请日：2008-12-31

申请人： Yao Xing ,  Yang Wang ,  Yan Hong Chen ,  Hua Bin Zhu ,  Jian Min Wang

发明人： Yao Xing ,  Yang Wang ,  Yan Hong Chen ,  Hua Bin Zhu ,  Jian Min Wang

IPC分类号： H01P1/10

CPC分类号： G01R33/3664 ,  G01R33/3415

摘要： A radio frequency (RF) switch device has at least two RF switch units, each RF switch unit having an output terminal and at least two input terminals. The RF switch units select one channel of RF signals from several channels of the RF signals that are supplied as inputs to their input terminals for emission as an output from their output terminals. A magnetic resonance imaging system and an RF signal transmission method employ such an RF switch device. The use of such an RF switch device reduces the number of channels of the RF signals that need to be further transmitted, which in turn reduces the number of the corresponding long RF cable channels and the number of channels of the subsequent devices, thereby preventing waste and reducing the cost of the system. Moreover, if the subsequent devices include a receiver coil channel selector, then the complexity of the receiver coil channel selector will also be reduced as the number of RF signal channels is decreased.

摘要翻译： 射频（RF）开关装置具有至少两个RF开关单元，每个RF开关单元具有输出端和至少两个输入端。 RF开关单元从RF信号的多个通道中选择一个通道的RF信号，该信号作为输入端被提供给输入端，用于从其输出端输出。 磁共振成像系统和RF信号传输方法采用这种RF开关装置。 使用这种RF开关装置减少需要进一步传输的RF信号的信道数量，这反过来减少对应的长RF电缆信道的数量和后续设备的信道数量，从而防止浪费 并降低系统的成本。 此外，如果随后的设备包括接收器线圈通道选择器，则随着RF信号通道的数量减少，接收器线圈通道选择器的复杂度也将减小。

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：US08285072B2

公开(公告)日：2012-10-09

申请号：US12361728

申请日：2009-01-29

申请人： Hua Bin Zhu ,  Jian Min Wang ,  Cai Xia Fu ,  Yan Hong Chen

发明人： Hua Bin Zhu ,  Jian Min Wang ,  Cai Xia Fu ,  Yan Hong Chen

IPC分类号： G06K9/40

CPC分类号： G01R33/565 ,  G01R33/5608 ,  G01R33/5659

摘要： In a method and apparatus for improving the brightness uniformity in an image, signals are acquired using a radio frequency receiving coil, and noise in the acquired signals is normalized so as to produce an image, then the brightness of various pixels in the image is determined according to the sensitivity of the radio frequency receiving coil. The brightness of the image is then made uniform by compensating the brightness of the various pixels in the image.

摘要翻译： 在用于提高图像的亮度均匀性的方法和装置中，使用射频接收线圈获取信号，并且将所获取的信号中的噪声归一化以产生图像，然后确定图像中的各种像素的亮度 根据射频接收线圈的灵敏度。 然后通过补偿图像中的各种像素的亮度使图像的亮度均匀。

公开(公告)号：US07876098B2

公开(公告)日：2011-01-25

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： G01V3/00

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：US20090190854A1

公开(公告)日：2009-07-30

申请号：US12361728

申请日：2009-01-29

申请人： Hua Bin Zhu ,  Jian Min Wang ,  Cai Xia Fu ,  Yan Hong Chen

发明人： Hua Bin Zhu ,  Jian Min Wang ,  Cai Xia Fu ,  Yan Hong Chen

IPC分类号： G06K9/40

CPC分类号： G01R33/565 ,  G01R33/5608 ,  G01R33/5659

摘要： In a method and apparatus for improving the brightness uniformity in an image, signals are acquired using a radio frequency receiving coil, and noise in the acquired signals is normalized so as to produce an image, then the brightness of various pixels in the image is determined according to the sensitivity of the radio frequency receiving coil. The brightness of the image is then made uniform by compensating the brightness of the various pixels in the image.

摘要翻译： 在用于提高图像的亮度均匀性的方法和装置中，使用射频接收线圈获取信号，并且将所获取的信号中的噪声归一化以产生图像，然后确定图像中的各种像素的亮度 根据射频接收线圈的灵敏度。 然后通过补偿图像中的各种像素的亮度使图像的亮度均匀。

公开(公告)号：US08155727B2

公开(公告)日：2012-04-10

申请号：US12393454

申请日：2009-02-26

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

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

IPC分类号： A61B5/055

CPC分类号： G01R33/34046 ,  A61B5/055 ,  A61B5/4528 ,  G01R33/34084 ,  G01R33/3415

摘要： A wrist coil for magnetic resonance imaging has a tubular coil formed by a number of coil splicing units spliced together in succession, and an annular coil unit that is wound around the surface of the tubular coil. Since the annular coil unit is wound around the surface of the tubular coil, and the current direction in the annular coil unit is perpendicular to the current direction in each of the coil splicing units, when some of the coil splicing units in the tubular coil do not acquire signals due to the fact that their magnetic field direction is parallel to that of the main magnetic field direction, the annular coil unit will carry out signal acquisition. Furthermore, since the magnetic flux of the annular coil unit is relatively large, this ensures a relatively high signal-to-noise ratio in the acquired signals no matter whatever layout position is adopted for the wrist coil, thus reducing equipment costs and eliminating restrictions for clinical applications in the prior art.

摘要翻译： 用于磁共振成像的腕线圈具有由连续拼接在一起的多个线圈拼接单元形成的管状线圈和缠绕在管状线圈的表面上的环形线圈单元。 由于环形线圈单元缠绕在管状线圈的表面上，并且环形线圈单元中的电流方向与每个线圈接合单元中的电流方向垂直，所以当管状线圈中的一些线圈接合单元 由于它们的磁场方向与主磁场方向的磁场方向平行，所以不能获取信号，所以环形线圈单元将执行信号采集。 此外，由于环形线圈单元的磁通量相对较大，因此无论采用何种布局位置，腕部线圈都可以获得相对较高的信噪比，从而降低了设备成本并消除了对 现有技术中的临床应用。

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：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：US20090222987A1

公开(公告)日：2009-09-10

申请号：US12361742

申请日：2009-01-29

申请人： Zeng He He ,  Yan Hong Chen ,  Jian Min Wang

发明人： Zeng He He ,  Yan Hong Chen ,  Jian Min Wang

IPC分类号： A61B6/04

CPC分类号： A61B5/0555

摘要： An examination bed for use in a magnetic resonance imaging system, has a bed board, a bottom antenna for an RF coil and a main body antenna for an RF coil. The bottom antenna is integrated in the inside or surface of the bed board, and forms a loop with the main body antenna, to form an RF coil. The thickness of the base plate is thereby reduced by integrating the bottom antenna into the bed board, thus increasing the available space to make the most of the limited space of the magnetic field for examination so that the examination bed can be used for those patients or other tested objects that would otherwise be oversized for the bed.

摘要翻译： 用于磁共振成像系统的检查床具有床板，用于RF线圈的底部天线和用于RF线圈的主体天线。 底部天线集成在床板的内部或表面，并与主体天线形成环路，以形成RF线圈。 因此，通过将底部天线整合到床板中，从而减小了底板的厚度，从而增加了可用空间，以充分利用磁场的有限空间进行检查，使得检查床可以用于那些患者或 其他被测试的对象，否则将被超大的床。