Magnetic resonance imaging method and apparatus

    公开(公告)号:US09658306B2

    公开(公告)日:2017-05-23

    申请号:US14074038

    申请日:2013-11-07

    CPC classification number: G01R33/56563

    Abstract: A magnetic resonance imaging (MRI) method and apparatus are provided including a signal acquirer, a resonance frequency acquirer, and an RF driver. The signal acquirer is configured to acquire a free induction decay (FID) signal or an echo signal to generate a magnetic resonance image of a portion of an area of a subject. The resonance frequency acquirer is configured to acquire a resonance frequency of the portion of the area from the acquired FID signal. The RF driver is configured to generate a refocusing RF pulse having the acquired resonance frequency. The signal acquirer, the resonance frequency acquirer and the RF driver are configured to acquire and generate in each of sections of an RF pulse sequence.

    MAGNETIC RESONANCE IMAGING SYSTEM, DATA PROCESSING APPARATUS, AND METHOD FOR GENERATING MAGNETIC RESONANCE IMAGE
    16.
    发明申请
    MAGNETIC RESONANCE IMAGING SYSTEM, DATA PROCESSING APPARATUS, AND METHOD FOR GENERATING MAGNETIC RESONANCE IMAGE 有权
    磁共振成像系统,数据处理装置和产生磁共振图像的方法

    公开(公告)号:US20140203805A1

    公开(公告)日:2014-07-24

    申请号:US14060723

    申请日:2013-10-23

    CPC classification number: G01R33/4835

    Abstract: A method and apparatus for generating a magnetic resonance image including applying to a target first radio frequency (RF) pulses having phases and different frequencies to excite a plurality of sub-volumes constituting a volume of the target, and acquiring first magnetic resonance signals from the plurality of sub-volumes, and applying to the target second RF pulses having the same frequencies as the frequencies of the first RF pulses and phases at least one of which is different from the phases of the first RF pulses, and acquiring second magnetic resonance signals from the plurality of sub-volumes. Also, data may be generated based on the first and second magnetic resonance signals.

    Abstract translation: 一种用于产生磁共振图像的方法和装置,包括应用具有相位和不同频率的目标第一射频(RF)脉冲以激励构成目标体积的多个子体积,以及从所述第一射频 多个子体积,并且施加到具有与第一RF脉冲的频率相同的频率的目标第二RF脉冲和其中至少一个与第一RF脉冲的相位不同的相位,并且获取第二磁共振信号 从多个子卷。 此外,可以基于第一和第二磁共振信号来生成数据。

    HIGH-SPEED MAGNETIC RESONANCE IMAGING METHOD AND APPARATUS
    17.
    发明申请
    HIGH-SPEED MAGNETIC RESONANCE IMAGING METHOD AND APPARATUS 有权
    高速磁共振成像方法与装置

    公开(公告)号:US20140184221A1

    公开(公告)日:2014-07-03

    申请号:US14075655

    申请日:2013-11-08

    CPC classification number: G01R33/482 G01R33/5619

    Abstract: Provided are high-speed magnetic resonance imaging methods and apparatuses that enable simultaneously obtaining magnetic resonance images with different resolutions. The present embodiments may produce magnetic resonance images with different resolutions more quickly by decreasing time taken to complete scan operations that are performed for producing the magnetic resonance images.

    Abstract translation: 提供了能够同时获得具有不同分辨率的磁共振图像的高速磁共振成像方法和装置。 本实施例可以通过减少完成用于产生磁共振图像的扫描操作所需的时间,更快地产生具有不同分辨率的磁共振图像。

    MAGNETIC RESONANCE IMAGING SYSTEM AND MAGNETIC RESONANCE IMAGING METHOD
    18.
    发明申请
    MAGNETIC RESONANCE IMAGING SYSTEM AND MAGNETIC RESONANCE IMAGING METHOD 有权
    磁共振成像系统和磁共振成像方法

    公开(公告)号:US20140111201A1

    公开(公告)日:2014-04-24

    申请号:US14059808

    申请日:2013-10-22

    CPC classification number: G01R33/543 G01R33/4835 G01R33/5611

    Abstract: A method of magnetic resonance imaging (MRI) includes applying radio frequency (RF) pulses including a plurality of frequency components and a selection gradient to a target to simultaneously excite a plurality of sub-volumes included in each of a plurality of groups, wherein neighboring sub-volumes of all sub-volumes constituting a volume of the target belong to different groups; acquiring magnetic resonance signals from the plurality of sub-volumes by performing 3D encoding on each of the excited sub-volumes; and reconstructing the acquired magnetic resonance signals into image data corresponding to each of the plurality of sub-volumes.

    Abstract translation: 一种磁共振成像(MRI)的方法包括将包括多个频率分量和选择梯度的射频(RF)脉冲施加到目标,以同时激励包括在多个组中的每个组中的多个子体积,其中相邻 构成目标卷的所有子卷的子卷属于不同的组; 通过对每个激发的子体积执行3D编码来从多个子体积获取磁共振信号; 以及将所获取的磁共振信号重建为与所述多个子卷中的每一个对应的图像数据。

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