A method for the analytical reconstruction for a more compartment sources - inversely geometry - ct

摘要

There are embodiments of the method (1100, 1200, 1500, 1600, 1700, 1800 and 1900, 2000, 2100) for the reconstruction of x-ray projection data (for example, of one or more sino described programs), which, using a more sources - - - inverse geometry computer tomography scanner ("igcts" - scanner) are acquired. An embodiment of a first method according to a igct - a sinogram processed by the rebinning operation initially in the "z" and anschließendin "x - y", wherein during the "x - y" - rebinning operation is applied a feathering. This generates an equivalent to a multiaxial sinogram of the third generation, the with the use of a parallel derivative and / or - hilbert transformation can be further processed. It is also possible to provide a tom - window technique (with feathering) as well as a combined rear projection art are used, in order to produce a reconstructed volume. An embodiment of a second method according to a igct - a sinogram processed using a parallel derivative and / or redundancy weighting. The second method can further comprising a signum - weighting, a secretary tom - windowing (with feathering), a rear projection and a hilbert transformation reversal -, in order to produce a different reconstructed volume.