公开(公告)号：US07432711B2

公开(公告)日：2008-10-07

申请号：US11540622

申请日：2006-09-29

申请人： Jian-Jun Du ,  Arne Reykowski ,  Markus Vester ,  Jian Min Wang

发明人： Jian-Jun Du ,  Arne Reykowski ,  Markus Vester ,  Jian Min Wang

IPC分类号： G01V3/00 ,  H01P7/00

CPC分类号： G01R33/3415 ,  G01R33/365

摘要： A coil arrangement for a magnetic resonance apparatus has a number of coil elements that are capable of being operated independently of one another and are situated around a common central area. Each coil element of the coil arrangement is capacitively or inductively decoupled from the coil elements of the coil arrangement that are immediately adjacent to this coil element. In the central area, there is situated a capacitor network that connects the coil elements of the coil arrangement to one another. The capacitor network is fashioned and dimensioned such that it at least reduces the coupling of each coil element of the coil arrangement to at least one additional coil element of the coil arrangement that is not immediately adjacent to the respective coil element.

摘要翻译： 用于磁共振装置的线圈装置具有能够彼此独立地操作并且位于公共中心区域周围的多个线圈元件。 线圈装置的每个线圈元件与线圈装置的线圈元件电容性地或电感地解耦，该线圈元件紧邻该线圈元件。 在中央区域中，设置有将线圈装置的线圈元件彼此连接的电容器网络。 电容器网络的形状和尺寸使得其至少将线圈装置的每个线圈元件的耦合减小到线圈装置的至少一个附加线圈元件，其不直接邻近相应的线圈元件。

公开(公告)号：US09465092B2

公开(公告)日：2016-10-11

申请号：US13689751

申请日：2012-11-29

申请人： Markus Vester ,  Jian Min Wang ,  Lan Wang ,  Zhi Bin Li

发明人： Markus Vester ,  Jian Min Wang ,  Lan Wang ,  Zhi Bin Li

IPC分类号： G01V3/00 ,  G01R33/54 ,  G01R33/36 ,  G01R33/3415

CPC分类号： G01R33/54 ,  G01R33/3415 ,  G01R33/3621

摘要： A method and system for receiving magnetic resonance signals, and a magnetic resonance imaging system are provided. The method includes dividing coil units in a receiving coil array into different coil unit groups. For each of the coil unit groups, correlations are established between carrier frequencies and the signals received by each coil unit in the coil unit group. Low noise amplification is performed, and filtering and frequency mixing is performed on the signals received by all the coil units in the coil unit group according to the correlations to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel. After performing amplification and filtering on the intermediate frequency signals, the intermediate frequency signals are output to an analog-to-digital conversion unit to perform digital sampling so as to obtain digital domain signals.

摘要翻译： 提供一种用于接收磁共振信号的方法和系统，以及磁共振成像系统。 该方法包括将接收线圈阵列中的线圈单元分成不同的线圈单元组。 对于每个线圈单元组，在线圈单元组中的载波频率和每个线圈单元接收的信号之间建立相关性。 执行低噪声放大，并且根据相关性对线圈单元组中的所有线圈单元接收到的信号进行滤波和混频，以获得承载在相同信道的相应载波频率上的中频信号。 在对中频信号执行放大和滤波之后，将中频信号输出到模数转换单元进行数字采样，以获得数字域信号。

公开(公告)号：US09568570B2

公开(公告)日：2017-02-14

申请号：US14062329

申请日：2013-10-24

申请人： Yan Li Chen ,  Yu Tang ,  Markus Vester ,  Jian Min Wang ,  Zhibin Li

发明人： Yan Li Chen ,  Yu Tang ,  Markus Vester ,  Jian Min Wang ,  Zhibin Li

IPC分类号： G01R33/34 ,  G01R33/28

CPC分类号： G01R33/34076 ,  G01R33/288

摘要： A body coil includes a first end ring and a second end ring provided at two ends thereof. The first end ring and the second end ring are connected to each other with a plurality of legs. The first end ring or the second end ring has a structure with the current flow width in a direction parallel to the axis thereof being greater than that in a direction perpendicular to the axis thereof. Since the effective action width of the current is increased in the axial direction and the centralized flow of the current in the end ring is reduced, the local specific absorption rate of radio frequency induced by the magnetic field is therefore reduced.

摘要翻译： 身体线圈包括设置在其两端的第一端环和第二端环。 第一端环和第二端环以多个腿相互连接。 第一端环或第二端环具有在与其轴线平行的方向上的电流流动宽度大于垂直于其轴线的方向上的电流流动宽度的结构。 由于电流的有效作用宽度在轴向上增加，并且端环中的电流的集中流动减小，因此减小了由磁场引起的射频的局部比吸收率。

公开(公告)号：US20130134980A1

公开(公告)日：2013-05-30

申请号：US13689751

申请日：2012-11-29

申请人： Markus Vester ,  Jian Min Wang ,  Lan Wang ,  Zhi Bin Li

发明人： Markus Vester ,  Jian Min Wang ,  Lan Wang ,  Zhi Bin Li

IPC分类号： G01R33/54

CPC分类号： G01R33/54 ,  G01R33/3415 ,  G01R33/3621

摘要： A method and system for receiving magnetic resonance signals, and a magnetic resonance imaging system are provided. The method includes dividing coil units in a receiving coil array into different coil unit groups. For each of the coil unit groups, correlations are established between carrier frequencies and the signals received by each coil unit in the coil unit group. Low noise amplification is performed, and filtering and frequency mixing is performed on the signals received by all the coil units in the coil unit group according to the correlations to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel. After performing amplification and filtering on the intermediate frequency signals, the intermediate frequency signals are output to an analog-to-digital conversion unit to perform digital sampling so as to obtain digital domain signals.

摘要翻译： 提供一种用于接收磁共振信号的方法和系统，以及磁共振成像系统。 该方法包括将接收线圈阵列中的线圈单元分成不同的线圈单元组。 对于每个线圈单元组，在线圈单元组中的载波频率和每个线圈单元接收的信号之间建立相关性。 执行低噪声放大，并且根据相关性对线圈单元组中的所有线圈单元接收到的信号进行滤波和混频，以获得承载在相同信道的相应载波频率上的中频信号。 在对中频信号执行放大和滤波之后，将中频信号输出到模数转换单元进行数字采样，以获得数字域信号。

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：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：US20130221967A1

公开(公告)日：2013-08-29

申请号：US13781338

申请日：2013-02-28

申请人： Weng Ming Li ,  Jian Min Wang ,  Lan Wang ,  Zhi Bin Li

发明人： Weng Ming Li ,  Jian Min Wang ,  Lan Wang ,  Zhi Bin Li

IPC分类号： G01R33/34

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

摘要： An RF coil device and an MM apparatus allowing a connection relationship between input RF channels and output RF channels to be controlled by a smaller number of switch elements are provided. The RF coil device includes multiple coil segments and a multi-selection switch. Input terminals of the multi-selection switch are each connected to a different coil segment. An output terminal of the multi-selection switch leads to an RF output channel. A control terminal of the multi-selection switch is used to receive a control signal so as to select a coil segment for connection to the output terminal. Multiple coil segments connected to the input terminals are not in consecutive positions, and the number of coil segments by which any two of the multiple coil segments are spaced apart is no fewer than the maximum number of coil segments required for one MRI imaging less 1. The MRI apparatus includes the RF coil device.

摘要翻译： 提供了允许由输入RF信道和输出RF信道之间的连接关系由较少数量的开关元件控制的RF线圈装置和MM装置。 RF线圈装置包括多个线圈段和多选择开关。 多选择开关的输入端子各自连接到不同的线圈段。 多选择开关的输出端子通向RF输出通道。 多选择开关的控制端子用于接收控制信号，以选择用于连接到输出端子的线圈段。 连接到输入端子的多个线圈段不在连续位置，并且多个线圈段中的任何两个间隔开的线圈段的数量不小于一个MRI成像所需的最大线圈段数少1。 MRI装置包括RF线圈装置。

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：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。