公开(公告)号：US20140117990A1

公开(公告)日：2014-05-01

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

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：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：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：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：US20080042651A1

公开(公告)日：2008-02-21

申请号：US11839756

申请日：2007-08-16

申请人： Zeng He He ,  Markus Vester ,  Jian Min Wang ,  Yang Wang

发明人： Zeng He He ,  Markus Vester ,  Jian Min Wang ,  Yang Wang

IPC分类号： H03H7/00 ,  G01R33/32

CPC分类号： G01R33/3621 ,  G01R33/3685 ,  G01R33/4814 ,  H03H7/0115

摘要： A HIFU compatible receiving coil for MRI radio-frequency signals has an antenna and an amplifier connected to each other, each for receiving and amplifying MRI radio-frequency signals, and a filter positioned in front of the amplifier for filtering the HIFU low frequency signals received by the antenna at the same time as receiving the MRI radio-frequency signals. In a method for receiving the MRI radio-frequency signals and then for amplifying the same, the received MRI radio-frequency signals are filtered before being amplified, so as to filter out the HIFU signals received at the same time as the MRI radio-frequency signals. By this filtering, the HIFU signals among the HIFU signals and MRI radio-frequency signals simultaneously received by the antenna are filtered out at the same time as the HIFU treatment, and the remaining MRI radio-frequency signals are connected into the MRI system after being amplified by the amplifier for real-time imaging. Since the amplifier only processes the MRI radio-frequency signals, it can stay in a normal linear working status to ensure the normal proceeding of the subsequent real-time imaging.

摘要翻译： 用于MRI射频信号的HIFU兼容接收线圈具有彼此连接的天线和放大器，用于接收和放大MRI射频信号，以及位于放大器前面的滤波器，用于对接收到的HIFU低频信号进行滤波 通过天线同时接收MRI射频信号。 在接收MRI射频信号然后进行放大的方法中，接收的MRI射频信号在被放大之前进行滤波，以便滤出与MRI射频同时接收的HIFU信号 信号。 通过这种滤波，天线同时接收的HIFU信号和MRI射频信号之间的HIFU信号在与HIFU处理同时被滤除，剩下的MRI射频信号被连接到MRI系统中 由放大器放大后进行实时成像。 由于放大器仅处理MRI射频信号，因此它可以保持在正常的线性工作状态，以确保后续实时成像的正常进行。

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：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：US07463030B2

公开(公告)日：2008-12-09

申请号：US11839756

申请日：2007-08-16

申请人： Zeng He He ,  Markus Vester ,  Jian Min Wang ,  Yang Wang

发明人： Zeng He He ,  Markus Vester ,  Jian Min Wang ,  Yang Wang

IPC分类号： G01V3/00

CPC分类号： G01R33/3621 ,  G01R33/3685 ,  G01R33/4814 ,  H03H7/0115

摘要： A HIFU compatible receiving coil for MRI radio-frequency signals has an antenna and an amplifier connected to each other, each for receiving and amplifying MRI radio-frequency signals, and a filter positioned in front of the amplifier for filtering the HIFU low frequency signals received by the antenna at the same time as receiving the MRI radio-frequency signals. In a method for receiving the MRI radio-frequency signals and then for amplifying the same, the received MRI radio-frequency signals are filtered before being amplified, so as to filter out the HIFU signals received at the same time as the MRI radio-frequency signals. By this filtering, the HIFU signals among the HIFU signals and MRI radio-frequency signals simultaneously received by the antenna are filtered out at the same time as the HIFU treatment, and the remaining MRI radio-frequency signals are connected into the MRI system after being amplified by the amplifier for real-time imaging. Since the amplifier only processes the MRI radio-frequency signals, it can stay in a normal linear working status to ensure the normal proceeding of the subsequent real-time imaging.

摘要翻译： 用于MRI射频信号的HIFU兼容接收线圈具有彼此连接的天线和放大器，每个用于接收和放大MRI射频信号，以及位于放大器前面的滤波器，用于对接收到的HIFU低频信号进行滤波 通过天线同时接收MRI射频信号。 在接收MRI射频信号然后进行放大的方法中，接收的MRI射频信号在被放大之前进行滤波，以便滤出与MRI射频同时接收的HIFU信号 信号。 通过这种滤波，天线同时接收的HIFU信号和MRI射频信号之间的HIFU信号在与HIFU处理同时被滤除，剩下的MRI射频信号被连接到MRI系统中 由放大器放大后进行实时成像。 由于放大器仅处理MRI射频信号，因此它可以保持在正常的线性工作状态，以确保后续实时成像的正常进行。

公开(公告)号：US10393845B2

公开(公告)日：2019-08-27

申请号：US15368607

申请日：2016-12-03

申请人： Steffen Schröter ,  Jan Bollenbeck ,  Matthias Fenchel ,  Peter Speier ,  Markus Vester

发明人： Steffen Schröter ,  Jan Bollenbeck ,  Matthias Fenchel ,  Peter Speier ,  Markus Vester

IPC分类号： G01R33/36 ,  G01R33/565

摘要： A transmitter for pilot tone navigation in a magnetic resonance tomography system includes a power supply and an antenna. The transmitter is configured to transmit a pilot tone signal via the antenna. The transmitter also includes a decoupling element in order to protect a transmitter output from signals that the antenna receives with excitation pulses of the magnetic resonance tomography system during a magnetic resonance tomography. In a method, movement-dependent changes to the pilot tone signal of the transmitter are identified by a controller of the magnetic resonance tomography system.