公开(公告)号：US07965082B2

公开(公告)日：2011-06-21

申请号：US12420140

申请日：2009-04-08

申请人： Helmut Greim ,  Markus Vester ,  Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

发明人： Helmut Greim ,  Markus Vester ,  Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

IPC分类号： G01V3/00

CPC分类号： G01R33/34076 ,  G01R33/3642 ,  G01R33/3657

摘要： In a method for processing radio frequency signals of a magnetic resonance imaging system in which the coil portion of the magnetic resonance imaging system includes a body coil and a local coil, radio frequency signals are supplied to the body coil, and these radio frequency signals are coupled to said local coil, and transmitted by said local coil into a region to be examined. A corresponding radio frequency system has a local coil and a body coil, with power coupling between the local coil and the body coil; during the phase for transmitting the radio frequency signals. The body coil serves to couple the radio frequency signals to be transmitted to the local coil, and the local coil serves to transmit the coupled radio frequency signals to a region to be examined. This method and system allow the transmitting function of the local coil to be achieved without having a coil plug on a patient bed to provide a radio frequency signal transmitting channel.

摘要翻译： 在用于处理磁共振成像系统的线圈部分包括体线圈和局部线圈的磁共振成像系统的射频信号的方法中，射频信号被提供给体线圈，并且这些射频信号是 耦合到所述局部线圈，并由所述局部线圈传输到待检查的区域中。 对应的射频系统具有局部线圈和体线圈，其在局部线圈和体线圈之间具有功率耦合; 在发射射频信号的阶段。 体线圈用于将待传输的射频信号耦合到本地线圈，并且本地线圈用于将耦合的射频信号传输到待检查的区域。 该方法和系统允许实现本地线圈的传输功能，而不需要在病床上设置线圈插头来提供射频信号传输通道。

公开(公告)号：US20090256564A1

公开(公告)日：2009-10-15

申请号：US12420140

申请日：2009-04-08

申请人： Helmut Greim ,  Markus Vester ,  Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

发明人： Helmut Greim ,  Markus Vester ,  Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

IPC分类号： G01R33/44

CPC分类号： G01R33/34076 ,  G01R33/3642 ,  G01R33/3657

摘要： In a method for processing radio frequency signals of a magnetic resonance imaging system in which the coil portion of the magnetic resonance imaging system includes a body coil and a local coil, radio frequency signals are supplied to the body coil, and these radio frequency signals are coupled to said local coil, and transmitted by said local coil into a region to be examined. A corresponding radio frequency system has a local coil and a body coil, with power coupling between the local coil and the body coil; during the phase for transmitting the radio frequency signals. The body coil serves to couple the radio frequency signals to be transmitted to the local coil, and the local coil serves to transmit the coupled radio frequency signals to a region to be examined. This method and system allow the transmitting function of the local coil to be achieved without having a coil plug on a patient bed to provide a radio frequency signal transmitting channel.

摘要翻译： 在一种用于处理磁共振成像系统的射频信号的方法中，其中磁共振成像系统的线圈部分包括体线圈和局部线圈，射频信号被提供给体线圈，并且这些射频信号是 耦合到所述局部线圈，并由所述局部线圈传输到待检查的区域中。 对应的射频系统具有局部线圈和体线圈，其在局部线圈和体线圈之间具有功率耦合; 在发射射频信号的阶段。 体线圈用于将待传输的射频信号耦合到本地线圈，并且本地线圈用于将耦合的射频信号传输到待检查的区域。 该方法和系统允许实现本地线圈的传输功能，而不需要在病床上设置线圈插头来提供射频信号传输通道。

公开(公告)号：US08233853B2

公开(公告)日：2012-07-31

申请号：US12354320

申请日：2009-01-15

申请人： Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

发明人： Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

IPC分类号： H03C1/62

CPC分类号： H04B1/18

摘要： A transmission circuit for radio frequency signals has a power mixer and includes a radio frequency input port, a first radio frequency output port, a second radio frequency output port, and a dummy load port. The transmission circuit also has a first switch unit and a second switch unit. The first switch unit is connected to the first radio frequency output port and outputs the radio frequency signals which are emitted from the first radio frequency output port or reflects the radio frequency signals which are emitted from the first radio frequency output port back to the first radio frequency output port. The second switch unit is connected to the second radio frequency output port and outputs the radio frequency signals which are emitted from the second radio frequency output port, or reflects the radio frequency signals which are emitted from the second radio frequency output port back to the second radio frequency output port. The radio frequency signals reflected to the radio frequency input port by the first switch unit and the radio frequency signals reflected to said radio frequency input port by the second switch unit cancel each other. The transmission circuit has reduced complexity and cost.

摘要翻译： 用于射频信号的发送电路具有功率混频器，包括射频输入端口，第一射频输出端口，第二射频输出端口和虚拟负载端口。 传输电路还具有第一开关单元和第二开关单元。 第一开关单元连接到第一射频输出端口，并输出从第一射频输出端口发射的射频信号或将从第一射频输出端口发射的射频信号反射回第一无线电 频率输出端口。 第二开关单元连接到第二射频输出端口，并输出从第二射频输出端口发射的射频信号，或将从第二射频输出端口发射的射频信号反射回第二射频信号 射频输出端口。 由第一开关单元反射到射频输入端口的射频信号和由第二开关单元反射到所述射频输入端口的射频信号彼此抵消。 传输电路具有降低的复杂性和成本。

公开(公告)号：US20090186586A1

公开(公告)日：2009-07-23

申请号：US12354320

申请日：2009-01-15

申请人： Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

发明人： Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

IPC分类号： H04B17/00

CPC分类号： H04B1/18

摘要： A transmission circuit for radio frequency signals has a power mixer and includes a radio frequency input port, a first radio frequency output port, a second radio frequency output port, and a dummy load port. The transmission circuit also has a first switch unit and a second switch unit. The first switch unit is connected to the first radio frequency output port and outputs the radio frequency signals which are emitted from the first radio frequency output port or reflects the radio frequency signals which are emitted from the first radio frequency output port back to the first radio frequency output port. The second switch unit is connected to the second radio frequency output port and outputs the radio frequency signals which are emitted from the second radio frequency output port, or reflects the radio frequency signals which are emitted from the second radio frequency output port back to the second radio frequency output port. The radio frequency signals reflected to the radio frequency input port by the first switch unit and the radio frequency signals reflected to said radio frequency input port by the second switch unit cancel each other. The transmission circuit has reduced complexity and cost.

摘要翻译： 用于射频信号的发送电路具有功率混频器，包括射频输入端口，第一射频输出端口，第二射频输出端口和虚拟负载端口。 传输电路还具有第一开关单元和第二开关单元。 第一开关单元连接到第一射频输出端口，并输出从第一射频输出端口发射的射频信号或将从第一射频输出端口发射的射频信号反射回第一无线电 频率输出端口。 第二开关单元连接到第二射频输出端口，并输出从第二射频输出端口发射的射频信号，或将从第二射频输出端口发射的射频信号反射回第二射频信号 射频输出端口。 由第一开关单元反射到射频输入端口的射频信号和由第二开关单元反射到所述射频输入端口的射频信号彼此抵消。 传输电路具有降低的复杂性和成本。

公开(公告)号：US20090219026A1

公开(公告)日：2009-09-03

申请号：US12393226

申请日：2009-02-26

申请人： Hai Ning Wang ,  Jian Min Wang ,  Wei Dong Wang

发明人： Hai Ning Wang ,  Jian Min Wang ,  Wei Dong Wang

IPC分类号： G01R33/20

CPC分类号： G01R33/34046 ,  G01R33/34076

摘要： A birdcage multi-channel body coil has a number of coil units that form a cylindrical shape, and they are connected in succession in the circumferential direction along the side face of the cylinder. The coil units are provided with capacitors with selected capacitance values that eliminate coupling between the coil units. This multi-channel body coil simply and conveniently eliminates the coupling between the coil units.

摘要翻译： 鸟笼多通道体线圈具有多个形成圆柱形状的线圈单元，并且沿着圆筒的侧面在圆周方向上连续连接。 线圈单元具有选择的电容值的电容器，其消除线圈单元之间的耦合。 该多通道体线圈简单且方便地消除了线圈单元之间的联接。

公开(公告)号：US07990144B2

公开(公告)日：2011-08-02

申请号：US12393226

申请日：2009-02-26

申请人： Hai Ning Wang ,  Jian Min Wang ,  Wei Dong Wang

发明人： Hai Ning Wang ,  Jian Min Wang ,  Wei Dong Wang

IPC分类号： G01V3/00

CPC分类号： G01R33/34046 ,  G01R33/34076

摘要： A birdcage multi-channel body coil has a number of coil units that form a cylindrical shape, and they are connected in succession in the circumferential direction along the side face of the cylinder. The coil units are provided with capacitors with selected capacitance values that eliminate coupling between the coil units. This multi-channel body coil simply and conveniently eliminates the coupling between the coil units.

摘要翻译： 鸟笼多通道体线圈具有多个形成圆柱形状的线圈单元，并且沿着圆筒的侧面在圆周方向上连续连接。 线圈单元具有选择的电容值的电容器，其消除线圈单元之间的耦合。 该多通道体线圈简单且方便地消除了线圈单元之间的联接。

公开(公告)号：US20090174408A1

公开(公告)日：2009-07-09

申请号：US12350284

申请日：2009-01-08

申请人： Jian Min Wang ,  Bi Da Zhang ,  Yao Xing ,  Zeng He He

发明人： Jian Min Wang ,  Bi Da Zhang ,  Yao Xing ,  Zeng He He

IPC分类号： G01R33/34

CPC分类号： G01R33/3415 ,  G01R33/3657 ,  G01R33/5659

摘要： A receiving device for an MRI (magnetic resonance imaging) system has multiple receiving coils. In the same imaging acceleration direction, a junction region is formed between adjacent receiving coils. An additional receiving coil is arranged on the junction region. The additional receiving coil covers at least partially a line of strong phase variation in sensitivity at the boundary of said junction region. This receiving device alleviates the problem of poor sensitivity to MRI signals in the junction region in the imaging acceleration direction, so as to improve the imaging quality in the junction region, and thus improving the overall imaging quality.

摘要翻译： 用于MRI（磁共振成像）系统的接收装置具有多个接收线圈。 在相同的成像加速方向上，在相邻的接收线圈之间形成接合区域。 在接合区域上设置一个附加的接收线圈。 附加接收线圈至少部分地覆盖在所述接合区域的边界处的灵敏度的强相位变化的线。 该接收装置缓解了在成像加速方向上的结区域对MRI信号的敏感性差的问题，以提高接合区域的成像质量，从而提高整体成像质量。

公开(公告)号：US08531186B2

公开(公告)日：2013-09-10

申请号：US12842459

申请日：2010-07-23

申请人： Jian Min Wang ,  Lan Wang ,  Yao Xing ,  Min Xue

发明人： Jian Min Wang ,  Lan Wang ,  Yao Xing ,  Min Xue

IPC分类号： G01R33/32 ,  G01R33/341

CPC分类号： G01R33/34046 ,  G01R33/34061 ,  G01R33/3607 ,  G01R33/5612

摘要： A body coil assembly for a magnetic resonance apparatus has a first coil and a second coil for generating a radio-frequency field in space, and a power control apparatus connected to the first coil and the second coil for controlling the transmitting power of the first coil and the second coil. In a method for generating a radio-frequency field using such a body coil assembly, the transmitting powers of the first coil and the second coil are controlled, to provide unequal transmitting powers to the first coil and the second coil when needed to generate a required radio-frequency field distribution, so as to form a stronger field strength at a certain position, thus improving the signal to noise ratio at that position during the receiving process.

摘要翻译： 一种用于磁共振装置的体线圈组件具有用于产生空间中的射频场的第一线圈和第二线圈，以及连接到第一线圈和第二线圈的功率控制装置，用于控制第一线圈的发射功率 和第二线圈。 在使用这种体线圈组件产生射频场的方法中，控制第一线圈和第二线圈的发射功率，以在需要时产生不必要的发射功率给第一线圈和第二线圈，以产生所需的 射频场分布，从而在特定位置形成更强的场强，从而提高接收过程中该位置的信噪比。

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：US07852085B2

公开(公告)日：2010-12-14

申请号：US12350284

申请日：2009-01-08

申请人： Jian Min Wang ,  Bi Da Zhang ,  Yao Xing ,  Zeng He He

发明人： Jian Min Wang ,  Bi Da Zhang ,  Yao Xing ,  Zeng He He

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/3657 ,  G01R33/5659

摘要： A receiving device for an MRI (magnetic resonance imaging) system has multiple receiving coils. In the same imaging acceleration direction, a junction region is formed between adjacent receiving coils. An additional receiving coil is arranged on the junction region. The additional receiving coil covers at least partially a line of strong phase variation in sensitivity at the boundary of said junction region. This receiving device alleviates the problem of poor sensitivity to MRI signals in the junction region in the imaging acceleration direction, so as to improve the imaging quality in the junction region, and thus improving the overall imaging quality.

摘要翻译： 用于MRI（磁共振成像）系统的接收装置具有多个接收线圈。 在相同的成像加速方向上，在相邻的接收线圈之间形成接合区域。 在接合区域上设置一个附加的接收线圈。 附加接收线圈至少部分地覆盖在所述接合区域的边界处的灵敏度的强相位变化的线。 该接收装置缓解了在成像加速方向上的结区域对MRI信号的灵敏度差的问题，以提高接合区域的成像质量，从而提高整体成像质量。