Abstract: A method for reducing artifacts in computed tomographic (CT) images is provided that is particularly useful for CT applications requiring higher gantry rotation rates. The method includes selecting a set of thresholds for projection view data; utilizing a smoothing kernel in accordance with the selected set of thresholds to produce a set of smoothed projections from a set of original projections obtained from a scan of an object, wherein an amount of smoothing applied varies depending upon a relationship of the original projections to the thresholds; producing a set of final projections utilizing the set of original projections and the set of smoothed projections; and reconstructing images of the object utilizing the final projections.

Abstract: The present invention, in one form, is an imaging system which, in one embodiment, utilizes scan data and DAS input signals to determine image quality. More specifically, and in one embodiment, by generating a ratio of data from two scans, a group of non-conforming detector cells may be identified. In addition, by comparing scans performed at different time frames, a trend of image quality is also determined. In addition, a group of non-conforming DAS channels may be identified by applying a range of known input signals. By comparing the an absolute gain ratio, the DAS performance is determined.