1. An imaging system comprising: a source generating an x-ray beam; a detector array receiving said x-ray beam and generating projection data; a translatable table configured for disposal of an object thereon and operable to translate in relation to said source and said detector array; said source and said detector array rotating about said translating table to helically scan said object; an image reconstructor electrically coupled to said detector array, said image reconstructor having a processor responsive to executable computer instructions when executed on the processor for performing a first reconstruction to reconstruct a first image in response to said projection data via a first iterative reconstruction technique; and, wherein said image reconstructor is further responsive to executable computer instructions for performing a second reconstruction of a second image in response to said first image via a second iterative reconstruction technique.