Reconstruction method in computed tomography (CT) is a step of reconstructing a reconstructed image that is magnified in the axial direction (Pm) cone-beam x-ray projection data set is measured optionally have an array of eccentric including. Reconstruction is performed is expanded including (rFOV) reconfigurable volume of cone beam x-ray data sets that are measured are expanded in the axial direction on the volume (eFOV). Projection data sets are weighted in the volumetric region. Iterative reconstruction, including to initialize the constant volume, to be performed repeatedly one or more used is followed by the repetition of one or more used repeatedly updates a second, different, repeating updates the first is used that. Alternatively, it can be transformed into a new geometry, including the difference between the finite projection views between adjacent projection data set, performing the BPF by using the Hilbert filtering along the different directions, the resulting rear projection filtering includes generating a reconstructed image final by averaging the reconstructed images (BPF) reconstruction is used.
展开▼
