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Method for reconstructing a two- or three-dimensional image data set from one- or two-dimensional projection images by the filtered backprojection method
Method for reconstructing a two- or three-dimensional image data set from one- or two-dimensional projection images by the filtered backprojection method
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机译：通过滤波反投影方法从一维或二维投影图像中重建二维或三维图像数据集的方法
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摘要
Method for reconstructing a two- or three-dimensional image data set from one- or two-dimensional projection images by the filtered backprojection method, wherein after filtering the projection image data for each pixel of the image data set to be reconstructed, contributions of the projection image data are added up to an attenuation value at this pixel, characterized in that after filtering the projection image data when summing at a pixel in the case of a missing projection image date, a nonzag object not obtainable by other filtered backprojection operations is added up to replace the missing projection image datum, wherein addition and multiplication of a value with the nonzag object returns the nonzag object , whereupon, after completion of the filtered backprojection, the field of view is determined as all pixels of the image data set that do not contain the nonzag object.
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