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1. 发明申请

US20180217213A1 SIGNAL RECEIVER FOR A MAGNETIC RESONANCE APPARATUS 审中-公开
公开(公告)号：US20180217213A1
公开(公告)日：2018-08-02
申请号：US15887322
申请日：2018-02-02
申请人： Siemens Healthcare GmbH
发明人： Annemarie Hausotte , Hubertus Fischer
IPC分类号： G01R33/3415 , G01R33/28 , G01R33/30
CPC分类号： G01R33/3415 , G01R33/283 , G01R33/307 , G01R33/3664 , G01R33/543
摘要： A signal receiver for receiving signals produced by a magnetic resonance scanner from an examination subject has an operating circuit and a local coil assembly having at least two coils, wherein the operating circuit is used to individually activate at least one of the at least two coils, and the operating circuit is located inside an RF-shielded room surrounding the magnetic resonance scanner.

2. 发明申请

US20180120391A1 SYSTEM AND METHOD FOR MAGNETIC RESONANCE IMAGING ONE OR MORE SUBJECTS 审中-公开
公开(公告)号：US20180120391A1
公开(公告)日：2018-05-03
申请号：US15337197
申请日：2016-10-28
申请人： GENERAL ELECTRIC COMPANY
发明人： VICTOR TARACILA , FRASER ROBB , EDDY BOSKAMP , DANIEL CHIRAYATH , SHUYING HUANG , MADHWESHA RAO , JAMES WILD
IPC分类号： G01R33/36 , G01R33/54 , G01R33/34
CPC分类号： G01R33/3628 , G01R33/34076 , G01R33/3635 , G01R33/3664 , G01R33/543
摘要： An MRI system for imaging one or more subjects is provided. The MRI system includes a magnet assembly and an MRI controller. The magnet assembly includes an RF coil for transmitting a first set of RF pulses into the one or more subjects at an initial Larmor frequency. The MRI controller is configured to electronically communicate with the RF coil and to adjust a resonant frequency of the RF coil such that the RF coil transmits a second set of RF pulses into the one or more subjects at one or more subsequent Larmor frequencies that are different from the initial Larmor frequency.

3. 发明授权

US09897671B2 Detuning apparatus for a receive coil for a magnetic resonance device including a number of coil elements 有权
公开(公告)号：US09897671B2
公开(公告)日：2018-02-20
申请号：US13605928
申请日：2012-09-06
申请人： Jan Bollenbeck , Klaus Porzelt , Wilfried Schnell
发明人： Jan Bollenbeck , Klaus Porzelt , Wilfried Schnell
IPC分类号： G01R33/3415 , G01R33/36
CPC分类号： G01R33/3664 , G01R33/3415 , G01R33/3657
摘要： A detuning apparatus for a receive coil for a magnetic resonance device includes a number of coil elements. The coil elements may be selectively connected to a receive channel of a data processing apparatus by way of a switching apparatus. Each of the coil elements includes at least one detuning assembly such as, for example, a PIN diode that may be switched between a detuning state and a receive state by way of a continuous switching signal. A controller is provided to switch the switching apparatus and to generate the switching signals. The detuning apparatus has first diplexers connected upstream of the switching apparatus for injecting switching signals for switching the detuning assembly for coil elements to be detuned dynamically. The detuning apparatus also includes detuning modules for each of the coil elements to switch the detuning assembly to the detuning state if there is no switching signal present.

4. 发明授权

US09746534B2 Adapter, coil, and magnetic resonance imaging system 有权
公开(公告)号：US09746534B2
公开(公告)日：2017-08-29
申请号：US14135229
申请日：2013-12-19
申请人： Yan Hong Chen , Wen Ming Li , Jia Heng Tan , Tong Tong
发明人： Yan Hong Chen , Wen Ming Li , Jia Heng Tan , Tong Tong
IPC分类号： G01R33/36 , G01R33/54
CPC分类号： G01R33/3664
摘要： An adapter includes a control circuit, a control signal interface, a first input signal interface, a second input signal interface, and a first output signal interface. The control signal interface receives a tuning/detuning signal, and the control circuit switches, according to the tuning/detuning signal, the first input signal interface and the second input signal interface to be in conduction with the first output signal interface.

5. 发明授权

US09720060B2 FET switch as detune circuit for MRI RF coils 有权
公开(公告)号：US09720060B2
公开(公告)日：2017-08-01
申请号：US14118345
申请日：2012-05-22
申请人： Arne Reykowski , Rodney Housen
发明人： Arne Reykowski , Rodney Housen
IPC分类号： G01V3/00 , G01R33/36 , G01R33/3415
CPC分类号： G01R33/3628 , G01R33/3415 , G01R33/3657 , G01R33/3664
摘要： A radio frequency (RF) coil assembly for use in magnetic resonance includes a radio frequency coil (42, 100) and an electronic switch (28) which switches between open and closed states to detune and tune the coil to a preselected resonance frequency. Each electronic switch includes at least one field effect transistor (FET) (70) and a bias network (72).

6. 发明授权

US09696396B2 Acquisition of MR data with sequential selection of resonant modes of the RF coil asssembly 有权
公开(公告)号：US09696396B2
公开(公告)日：2017-07-04
申请号：US14115676
申请日：2012-05-30
申请人： Assunta Vitacolonna , Angelo Galante , Marcello Alecci
发明人： Assunta Vitacolonna , Angelo Galante , Marcello Alecci
IPC分类号： G01R33/34 , G01R33/36 , G01R33/3415 , G01R33/345 , G01R33/565
CPC分类号： G01R33/3635 , G01R33/34007 , G01R33/3415 , G01R33/3456 , G01R33/3664 , G01R33/5659
摘要： A method (10) for acquiring magnetic resonance data from a sample (50) to be analyzed through a fixed geometry configuration coil suitable for transmitting radiofrequency signals ‘suitable for exciting said sample and/or detecting magnetic resonance signals from the sample (50) is described. The coil (100) comprises a plurality of current elements (20,21,22) and exhibits a frequency response comprising a plurality of resonant modes (M1, M2, M3) each associable to a respective resonant frequency (f1,f2,f3) depending on electrical features of the current elements (20,21,22), the current elements (20,21,22) comprising at least one current element having electrical features that may be regulated based on a respective control signal (S_CV0, S_CV1, S_CV2). The method provides for synthesizing the control signal such as to obtain magnetic resonance data from a same sample for a given first resonant frequency of interest sequentially using resonance modes having different spatial field distributions.

7. 发明申请

US20170184692A1 DETERMINING POSITION OF RADIO FREQUENCY COIL IN MAGNETIC RESONANCE IMAGING SYSTEM 审中-公开
公开(公告)号：US20170184692A1
公开(公告)日：2017-06-29
申请号：US15282921
申请日：2016-09-30
申请人： SHENYANG NEUSOFT MEDICAL SYSTEMS CO., LTD.
发明人： Huidong Gu , Hongbing Hu , Jianhua Shi , Haobo Jin , Hui Li , Yunhan Li
IPC分类号： G01R33/341 , G01R33/30
CPC分类号： G01R33/341 , G01R33/307 , G01R33/3415 , G01R33/3664 , G01R33/543
摘要： A method for determining a position of an RF coil in a magnetic resonance imaging (MRI) system is disclosed. As an example, a center of a field of view (FOV) to be scanned may be adjusted to a magnetic field center of an MRI system, and coordinate values in a coordinate system for shape-characteristic points of the FOV may be determined, where an origin of the coordinate system is located at the magnetic field center of the MRI system. A preset gradient magnetic field may be applied to the FOV, and coil units respectively covering the shape-characteristic points may be determined. An effective region may be obtained by connecting the determined coil units according to the shape of the FOV, and a coil unit located in the effective region may be determined as an effective coil unit for imaging the FOV by the MRI system.

8. 发明申请

US20170067975A1 ADAPTIVE ELECTROMAGNET FOR HIGH PERFORMANCE MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：用于高性能磁共振成像的自适应电磁铁
公开(公告)号：US20170067975A1
公开(公告)日：2017-03-09
申请号：US15351604
申请日：2016-11-15
申请人： Chad Tyler Harris , Alexander Gyles Panther , Stephen B.E. McFadyen
发明人： Chad Tyler Harris , Alexander Gyles Panther , Stephen B.E. McFadyen
IPC分类号： G01R33/381 , G01R33/3875 , G01R33/385
CPC分类号： G01R33/381 , G01R33/3664 , G01R33/385 , G01R33/3875 , G01R33/4833 , G01R33/543 , H01F7/064
摘要： A method of configuring a conducting grid of elements interconnected at intersecting nodes by switches is described. The method includes: constructing a background grid by connection of centroids of the cell shape of the conducting grid; identifying a subset of elements in the background grid that intersect the smooth pattern of loops; identifying a subset of elements in the conducting grid that intersect the subset of elements in the background grid; the subset of elements in the conducting grid forming a discretized pattern of loops representing the smooth pattern of loops; for each of the discretized pattern of loops identifying current-in and current-out nodes; altering the on-off state of individual switches in accordance with the discretized pattern of loops; opening the switch between each respective pair of current-in and current out nodes; and applying power to the conducting grid via at least one pair of the input and output current nodes such that the current flow through the elements generates the magnetic field profile.
摘要翻译：描述了通过交换机在交叉节点处互连的元件的导电栅格的配置方法。该方法包括：通过连接导电栅格的单元格形状的质心来构建背景网格; 识别背景网格中与循环平滑模式相交的元素的子集; 识别导电网格中与背景网格中的元素子集相交的元素的子集; 导电栅格中的元素的子集形成表示环的平滑图案的环的离散模式; 对于每个离散的模式的环路识别电流输入和电流输出节点; 根据循环的离散模式改变各个开关的开关状态; 在每个相应的一对电流输入和当前输出节点之间打开开关; 以及经由至少一对所述输入和输出电流节点向所述导电栅格施加电力，使得通过所述元件的电流产生所述磁场分布。

9. 发明授权

US09513350B2 Radio frequency coil device and magnetic resonance imaging system 有权
标题翻译：射频线圈装置和磁共振成像系统
公开(公告)号：US09513350B2
公开(公告)日：2016-12-06
申请号：US13787024
申请日：2013-03-06
申请人： Wen Ming Li , Yu Ye Liu , Jian Min Wang
发明人： Wen Ming Li , Yu Ye Liu , Jian Min Wang
IPC分类号： G01R33/34 , G01R33/36 , G01R33/3415
CPC分类号： G01R33/34092 , G01R33/3415 , G01R33/3664
摘要： An RF coil device and an MRI system are provided. The RF coil device includes m coil elements, where m is an integer greater than 1. The RF coil device also includes an RF switch control unit including n output terminals and m input terminals connected to the m coil elements, respectively, where n is an integer greater than or equal to 1 and less than m. The RF coil device includes a decoder for outputting a control signal to the RF switch control unit according to a received control command. The RF switch control unit connects each of not more than n input terminals to a different output terminal according to the control signal.
摘要翻译：提供RF线圈装置和MRI系统。 RF线圈装置包括m个线圈元件，其中m是大于1的整数。RF线圈装置还包括RF开关控制单元，其分别包括n个输出端子和m个输入端子，其连接到m个线圈元件，其中n是大于或等于1且小于m的整数。 RF线圈装置包括：解码器，用于根据接收到的控制命令向RF开关控制单元输出控制信号。 RF开关控制单元根据控制信号将不多于n个输入端子中的每一个连接到不同的输出端子。

10. 发明申请

US20160313426A1 ADAPTIVE ELECTROMAGNET FOR HIGH PERFORMANCE MAGNETIC RESONANCE IMAGING 有权
标题翻译：用于高性能磁共振成像的自适应电磁铁
公开(公告)号：US20160313426A1
公开(公告)日：2016-10-27
申请号：US14898545
申请日：2015-04-27
申请人： Chad Tyler HARRIS , Alexander Gyles PANTHER , Stephen B.E. MCFADYEN
发明人： Chad Tyler HARRIS , Alexander Gyles PANTHER , Stephen B.E. MCFADYEN
IPC分类号： G01R33/54 , G01R33/483 , G01R33/36 , H01F7/06
CPC分类号： G01R33/381 , G01R33/3664 , G01R33/385 , G01R33/3875 , G01R33/4833 , G01R33/543 , H01F7/064
摘要： A method of configuring a conducting grid of elements interconnected at intersecting nodes by switches is described. The method includes: constructing a background grid by connection of centroids of the cell shape of the conducting grid; identifying a subset of elements in the background grid that intersect the smooth pattern of loops; identifying a subset of elements in the conducting grid that intersect the subset of elements in the background grid; the subset of elements in the conducting grid forming a discretized pattern of loops representing the smooth pattern of loops; for each of the discretized pattern of loops identifying current-in and current-out nodes; altering the on-off state of individual switches in accordance with the discretized pattern of loops; opening the switch between each respective pair of current-in and current out nodes; and applying power to the conducting grid via at least one pair of the input and output current nodes such that the current flow through the elements generates the magnetic field profile.
摘要翻译：描述了通过交换机在交叉节点处互连的元件的导电栅格的配置方法。该方法包括：通过连接导电栅格的单元格形状的质心来构建背景网格; 识别背景网格中与循环平滑模式相交的元素的子集; 识别导电网格中与背景网格中的元素子集相交的元素的子集; 导电栅格中的元素的子集形成表示环的平滑图案的环的离散模式; 对于每个离散的模式的环路识别电流输入和电流输出节点; 根据循环的离散模式改变各个开关的开关状态; 在每个相应的一对电流输入和当前输出节点之间打开开关; 以及经由至少一对所述输入和输出电流节点向所述导电栅格施加电力，使得通过所述元件的电流产生所述磁场分布。

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