Magnetic resonance body coil assembly and method for generating radio-frequency field using the magnetic resonance body coil assembly
    1.
    发明授权
    Magnetic resonance body coil assembly and method for generating radio-frequency field using the magnetic resonance body coil assembly 有权
    磁共振体线圈组件及使用磁共振体线圈组件产生射频场的方法

    公开(公告)号:US08531186B2

    公开(公告)日:2013-09-10

    申请号:US12842459

    申请日:2010-07-23

    IPC分类号: G01R33/32 G01R33/341

    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。

    Receiving method, receiving system for magnetic resonance signals, and magnetic resonance imaging system
    2.
    发明授权
    Receiving method, receiving system for magnetic resonance signals, and magnetic resonance imaging system 有权
    接收方式,磁共振信号接收系统和磁共振成像系统

    公开(公告)号:US09465092B2

    公开(公告)日:2016-10-11

    申请号:US13689751

    申请日:2012-11-29

    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。

    Receiving Method, Receiving System for Magnetic Resonance Signals, and Magnetic Resonance Imaging System
    3.
    发明申请
    Receiving Method, Receiving System for Magnetic Resonance Signals, and Magnetic Resonance Imaging System 有权
    接收方式,磁共振信号接收系统和磁共振成像系统

    公开(公告)号:US20130134980A1

    公开(公告)日:2013-05-30

    申请号:US13689751

    申请日:2012-11-29

    IPC分类号: G01R33/54

    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。

    Radio Frequency Coil Device and Magnetic Resonance Imaging Apparatus
    4.
    发明申请
    Radio Frequency Coil Device and Magnetic Resonance Imaging Apparatus 有权
    射频线圈装置和磁共振成像装置

    公开(公告)号:US20130221967A1

    公开(公告)日:2013-08-29

    申请号:US13781338

    申请日:2013-02-28

    IPC分类号: G01R33/34

    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。

    Radio frequency coil device and magnetic resonance imaging apparatus
    5.
    发明授权
    Radio frequency coil device and magnetic resonance imaging apparatus 有权
    射频线圈装置和磁共振成像装置

    公开(公告)号:US09291688B2

    公开(公告)日:2016-03-22

    申请号:US13781338

    申请日:2013-02-28

    摘要: An RF coil device and an MRI 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MRI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。

    Systems and methods for providing security in an electronic device
    8.
    发明授权
    Systems and methods for providing security in an electronic device 有权
    在电子设备中提供安全性的系统和方法

    公开(公告)号:US09218491B2

    公开(公告)日:2015-12-22

    申请号:US13640031

    申请日:2010-04-13

    摘要: Security methods are provided. The method can include comparing a first device identifier (125) disposed within a component (120) with a second device identifier (135) disposed within an immutable memory (130). The component and the immutable memory can be disposed at least partially within an electronic device (110). The method can include starting the electronic device normally if the first device identifier corresponds to the second device identifier. The method can further include providing at least one indicator (150) if the first device identifier fails to correspond to the second device identifier. Security systems are also provided.

    摘要翻译: 提供安全方法。 该方法可以包括将布置在组件(120)内的第一设备标识符(125)与设置在不可变存储器(130)内的第二设备标识符(135)进行比较。 部件和不可变存储器可以至少部分地设置在电子设备(110)内。 如果第一设备标识符对应于第二设备标识符,则该方法可以包括正常启动电子设备。 该方法还可以包括:如果第一设备标识符不能对应于第二设备标识符,则提供至少一个指示符(150)。 还提供安全系统。

    Pre-throttle pressure control systems and methods
    10.
    发明授权
    Pre-throttle pressure control systems and methods 有权
    节气门前压力控制系统和方法

    公开(公告)号:US08897988B2

    公开(公告)日:2014-11-25

    申请号:US13104294

    申请日:2011-05-10

    IPC分类号: F02D11/10 F02D41/00

    摘要: A system for a vehicle includes a desired mass air flowrate (MAF) module and a desired effective area module. The desired MAF module generates a desired MAF through a throttle valve of an engine based on an engine torque request. The desired effective area module generates a desired effective area of the throttle valve based on a throttle inlet air pressure (TIAP) and the desired MAF. A throttle actuator module adjusts opening of the throttle valve based on the desired effective area.

    摘要翻译: 一种用于车辆的系统包括期望的质量空气流量(MAF)模块和期望的有效区域模块。 所需的MAF模块基于发动机扭矩请求通过发动机的节气门产生期望的MAF。 所需的有效区域模块基于节气门入口空气压力(TIAP)和期望的MAF产生节气门的期望的有效面积。 节气门执行器模块基于期望的有效面积来调节节气门的开度。