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：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：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：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：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：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：US08106658B2

公开(公告)日：2012-01-31

申请号：US12361712

申请日：2009-01-29

申请人： Jian Min Wang ,  Hua Bin Zhu

发明人： Jian Min Wang ,  Hua Bin Zhu

IPC分类号： G01V3/00

CPC分类号： G01R33/36 ,  G01R33/288

摘要： An identification code circuit for a receiving coil in a magnetic resonance imaging system, is embodied in a main coil. The circuit has a fixed resistance for generating the identification code of the main coil. The main coil has a socket for connecting a sub-coil, so that a coil plug of a sub-coil can be plugged into the socket for connecting to the main coil. The identification code circuit also has a regulating resistance and a sub-coil switch corresponding to the socket. The coil plug of the sub-coil is plugged into the socket to close the sub-coil switch, so that the values of the regulating resistance and said fixed resistance are added together to form a combined resistance value. After said main coil has been connected to a magnetic resonance imaging system, an identification code source voltage value across the combined resistance value is the identification code of the combined main coil and sub-coil. A receiving circuit identification code thus can be generated simply and with reduced cost.

摘要翻译： 用于磁共振成像系统中的接收线圈的识别码电路体现在主线圈中。 电路具有用于产生主线圈的识别码的固定电阻。 主线圈具有用于连接子线圈的插座，使得子线圈的线圈插头可以插入插座中以连接到主线圈。 识别码电路还具有对应于插座的调节电阻和子线圈开关。 子线圈的线圈插头插入插座中以闭合子线圈开关，使得调节电阻和所述固定电阻的值相加在一起形成组合电阻值。 在所述主线圈已经连接到磁共振成像系统之后，组合电阻值上的识别码源电压值是组合的主线圈和子线圈的识别码。 因此，可以简单且成本低廉地生成接收电路识别码。

公开(公告)号：US20090189744A1

公开(公告)日：2009-07-30

申请号：US12361712

申请日：2009-01-29

申请人： Jian Min Wang ,  Hua Bin Zhu

发明人： Jian Min Wang ,  Hua Bin Zhu

IPC分类号： G06F7/04

CPC分类号： G01R33/36 ,  G01R33/288

摘要： An identification code circuit for a receiving coil in a magnetic resonance imaging system, is embodied in a main coil. The circuit has a fixed resistance for generating the identification code of the main coil. The main coil has a socket for connecting a sub-coil, so that a coil plug of a sub-coil can be plugged into the socket for connecting to the main coil. The identification code circuit also has a regulating resistance and a sub-coil switch corresponding to the socket. The coil plug of the sub-coil is plugged into the socket to close the sub-coil switch, so that the values of the regulating resistance and said fixed resistance are added together to form a combined resistance value. After said main coil has been connected to a magnetic resonance imaging system, an identification code source voltage value across the combined resistance value is the identification code of the combined main coil and sub-coil. A receiving circuit identification code thus can be generated simply and with reduced cost.

摘要翻译： 用于磁共振成像系统中的接收线圈的识别码电路体现在主线圈中。 电路具有用于产生主线圈的识别码的固定电阻。 主线圈具有用于连接子线圈的插座，使得子线圈的线圈插头可以插入插座中以连接到主线圈。 识别码电路还具有对应于插座的调节电阻和子线圈开关。 子线圈的线圈插头插入插座中以闭合子线圈开关，使得调节电阻和所述固定电阻的值相加在一起形成组合电阻值。 在所述主线圈已经连接到磁共振成像系统之后，组合电阻值上的识别码源电压值是组合的主线圈和子线圈的识别码。 因此，可以简单且成本低廉地生成接收电路识别码。