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    • 68. 发明申请
    • Method for homogenizing resolution in magnet resonance tomography measurements using non-linear encoding fields
    • 使用非线性编码区域在磁共振断层摄影测量中使分辨率均匀化的方法
    • US20110241678A1
    • 2011-10-06
    • US13064277
    • 2011-03-16
    • Hans WeberMaxim ZaitsevDaniel GallichanGerrit Schultz
    • Hans WeberMaxim ZaitsevDaniel GallichanGerrit Schultz
    • G01R33/48
    • G01R33/4833
    • A method for magnetic resonance (=MR) imaging, wherein non-linear gradient fields are applied for the purpose of spatial encoding to acquire images of an object to be imaged and wherein the magnet resonance signal radiated from the object to be imaged is sampled on grids in time, to thereby obtain sampling points, is characterized in that the object to be imaged is mapped completely in regions of stronger gradient fields by increasing the density of the sampling points in the center of k-space, and additional sampling points are specifically acquired in the outer regions of k-space according to a k-space sampling pattern depending on the desired distribution of the resolution in the measurement, wherein the MR measurement is calculated with the additional sampling points. An MR imaging method is thereby provided by means of which homogenized resolution is achieved in the MR measurements using non-linear gradient fields for spatial encoding.
    • 一种用于磁共振(= MR)成像的方法,其中应用非线性梯度场用于空间编码以获取待成像对象的图像,并且其中从待成像对象辐射的磁共振信号被采样在 时间上的网格,从而获得采样点,其特征在于通过增加k空间中心的采样点的密度,将要成像的对象完全映射在更强的梯度场的区域中,并且附加的采样点是具体的 根据k-空间采样模式在k空间的外部区域中取决于测量中的分辨率的期望分布,其中用附加采样点计算MR测量值。 由此提供MR成像方法,通过这种方法,使用非线性梯度场用于空间编码的MR测量中实现了均匀分辨率。