A New CT Collimator for Producing Two Simultaneous Overlapping Slices from One Scan

In this paper, a modification of the EMI CT 5005 collimator isused to simultaneously produce two overlapping two-dimensional sections of the object from one scan. Such a new collimator not only achieves a speedimprovement in the generation of successive overlapping sections, but also yields a reduction of the X-ray dosage used by the standard EMI CT 5005 collimator. It is demonstrated that the quality of the images from these twoslices almost equals the quality of the images that are produced by the EMI CT 5005 collimator from two separate scans.