Patent ID: 6118839
Filing Date: 2000-09-12
Classification: A61B,Y10S

Abstract:
A computerized tomography (CT) scanner system comprising:a gantry,a bed for supporting a scanned subject within an aperture in said gantry,an X-ray source mounted on said gantry,means for revolving said X-ray source about said subject,an X-ray detector array on a side of said subject opposite from said X-ray source,said detector array comprising multiple rows of axially extending detectors for simultaneously detecting X-rays that have traversed multiple planar sections of said subject to thereby acquire radiation intensity data,means for causing relative motion in an axial direction between said gantry and said subject during the scans so that said data are acquired by said detector array while said X-ray source revolves about said subject during the relative motion along said axial direction to provide a helical scan with continuously different bed positions relative to said source and to said detector array,means for reconstructing images from said data including means for reformatting said data into single plane data, and wherein said means for reformatting comprises means for interpolating between data acquired by a detector element of one row at a given bed position and gantry angle, and data acquired by another detector element in a following row and adjacent to the detector of the first row at the given bed position and gantry angle or at different bed positions and gantry angles and differing by an integer multiple of .pi..