CONEBEAM COMPUTED TOMOGRAPHY IMAGING

摘要

An image reconstruction method for reconstructing cone or wedge-beam computed tomography projection data includes re-binning (50) the projection data to associate projection data having the similar angular orientation (theta), weighting (60) projection data based on at least one of its angular orientation (theta) and its location within a detector aperture (20), and reconstructing (66) the weighted projection data (64) to form a volume image representation (70). In one preferred embodiment, the weighting (60) includes distributing (56) re-binned projection data (52) associated with a selected image element which one of (a) has the same angular orientation (theta) and (b) is angularly separated by integer multiples of 180° into a selected one or more of a plurality of parallel processing pipelines (60m), and combining (62) the outputs of the selected one or more parallel processing pipelines (60m) to produce weighted projection data (64).