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Method for generating magnetic resonance tomographic images of periodic motion
Method for generating magnetic resonance tomographic images of periodic motion
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机译：产生周期性运动的磁共振断层图像的方法
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摘要
A method for generating a magnetic resonance tomographic image of at least one phase of periodic motion, wherein the method uses a radial or near radial k-space partial trajectory (k1 ... kx) for a period during an imaging time T. Generating a raw row data set (r1... Rx) of motion, and for each region (region of interest, ROI) of at least the raw data set (r1. Reconstructing a series of intermediate images (z1... Zy) from a data set (r1... Xy) and calculating a distance matrix D from the series of intermediate images (z1... Zy), Each matrix element D is the distance between the first intermediate image in the series (z1... Zy) and its first intermediate image, or the distance between another intermediate image in the series (z1... Zy). And a step of fitting the function (v1... Vz) to the structure formed in the distance matrix D using the active contour method and the fitted curve (v1... Vz). ) And restoring at least one image B from the raw data set (r1... Rx) corresponding to the common set S with the rows of the distance matrix D.
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