首页> 外国专利> A method for magnetic resonance - imaging by means of a partial parallel acquisition art in the case of not - of the cartesian occupancy of the k - space

A method for magnetic resonance - imaging by means of a partial parallel acquisition art in the case of not - of the cartesian occupancy of the k - space

机译:一种用于磁共振的方法-在k空间的笛卡尔不占用的情况下,通过部分并行采集技术进行成像

摘要

The invention relates to a method for magnetic resonance - imaging by means of a partial parallel acquisition art in the case of not - of the cartesian occupancy of the k - space with a plurality of magnetic in order for the reception of an image field (7) arranged around the antennas (12.1, 12.2, 12.3, 12.4) and with a location of the magnetic resonance signals in the image field (7) by means of magnetic gradient fields, in such a way that the k - space only incompletely by means of at least one around the origin of the k - space (26) extending trajectory (24) is activated with magnetic from received signals of each antenna in the k - space are in each case on an from the origin (26) extending line segment (p1, p2, p3, p4), and absence of the sampling values (32) which is also made on the straight line (p1, p2, p3, p4) lying sampling values (34) of the trajectory (24) according to a weighting with weighting factors (w) is determined. This in such a way that the k - space is completely occupied. From the completely k - space is occupied by means of a fourier - transformation (42) a partial image (44) of the imaging region (7) is produced from the fields (44), an image (46) of the imaging region (7) generates.
机译:本发明涉及一种用于磁共振的方法-在不具有多个磁场的k空间的笛卡尔占用的情况下通过部分平行采集技术进行成像以接收像场(7 )布置在天线(12.1、12.2、12.3、12.4)周围,并借助磁梯度场将磁共振信号定位在像场(7)中,使得k-空间仅通过围绕k-空间(26)的延伸轨迹(24)的原点的至少一个中的至少一个被k-空间中每个天线的接收信号的磁激活,在每种情况下,在来自-k(26)的延伸线段上(p1,p2,p3,p4),并且不存在采样值(32),该采样值(32)也在直线(p1,p2,p3,p4)上根据轨迹(24)的采样值(34)确定具有加权因子(w)的加权。这样就完全占据了k-空间。通过傅立叶变换(42)完全占据k空间,从场(44)生成成像区域(7)的图像(46)的成像区域(7)的部分图像(44)。 7)产生。

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