On two versions of a 3π algorithm for spiral CT
نویسنده
چکیده
A 3π algorithm is obtained in which all the derivatives are confined to a detector array. Distance weighting of backprojection coefficients of the algorithm is studied. A numerical experiment indicates that avoiding differentiation along the source trajectory improves spatial resolution. Another numerical experiment shows that the terms depending on the non-standard distance weighting 1/|x − y(s)| can no longer be ignored.
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تاریخ انتشار 2004