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    • 7. 发明申请
    • MAGNETIC RESONANCE DATA ACQUISITION METHOD AND APPARATUS
    • 磁共振数据采集方法和装置
    • US20070236217A1
    • 2007-10-11
    • US11733801
    • 2007-04-11
    • David Porter
    • David Porter
    • G01V3/00
    • G01R33/5615G01R33/5616G01R33/5617G01R33/5618G01R33/56554G01R33/5676
    • In a method and magnetic resonance apparatus for acquisition of image data for a magnetic resonance image, the image data are acquired with an acquisition sequence, in which a k-space matrix corresponding to the image data is scanned in segments with at least two partial acquisitions and in which each of the partial acquisition includes a navigator signal in addition to the measurement signal with which a specific k-space segment is scanned, with which navigator signal a same navigator segment of the k-space matrix is scanned. In one of the partial acquisitions a measure is determined that characterizes the breadth of the distribution of signal values of the navigator signal with regard to the k-space matrix and the partial acquisition is repeated if and when the measure lies outside of a tolerance range.
    • 在用于获取磁共振图像的图像数据的方法和磁共振装置中,以采集序列获取图像数据,其中与图像数据对应的k空间矩阵以至少两个部分获取的片段扫描 并且其中部分获取中的每一个除了扫描特定k空间段的测量信号之外还包括导航信号,其中扫描k空间矩阵的相同导航器段的导航信号。 在部分采集之一中,确定表征导航器信号相对于k空间矩阵的信号值的分布的宽度的度量,并且当该测量位于公差范围之外时重复部分采集。