Computerized tomographic multi-frame image reconstruction method and apparatus for helical scanning

摘要

The present invention, in one form, is a system (10) for performing image reconstruction from projection data acquired in a helical scan. More specifically, the system (10) implements an incremental reconstruction algorithm for helical scan projection data which does not require filtering, weighting and backprojecting such projection data for generating each image. Particularly, a segmentation algorithm divides the projection into a plurality of segments so that subsequent images are generated by generating image data only for those segments that have changed from the base image.