Method for reconstructing three-dimensional image data set from computed tomography-raw data set of human body during diagnosis process, involves applying correction filter on data during determination of reconstruction data sets

摘要

The method involves applying a correction filter, which matches a frequency response, on data during determination of reconstruction data sets (3, 4). The filter is computed by considering a deviation differential filter and/or a deviation Hilbert filter. A frequency response deviation of a differential filter is described by an unapproximated differentiation using the deviation differential filter. A frequency response deviation of a Hilbert filter is described by an unapproximated Hilbert transformation. A three-dimensional image data set (1) is produced by weighed addition of the data sets.