Patent ID: 6188745
Filing Date: 2001-02-13
Classification: A61B,G01N

Abstract:
A CT scanner system comprising:a source of X-rays mounted for rotation about a Z-axis; anda plurality of detector elements arranged in a plurality of columns and positioned relative to the source and one another so that data values representative of CT slices of different thicknesses can be generated in response to X-rays being projected by the source onto corresponding select ones of the detector elements as the source rotates about the Z-axis wherein the detector elements are sized and arranged so that at least some of the detector elements provided in each of the columns have lengths that vary in the Z-axis direction in accordance with a predetermined sequence code that includes the sequence of 5, 2, 2, 1, 1, 2, 2, 5 and represents all of the whole integers in equal incremental values from 1 to at least 10; andan apertured device for defining a beam of X-rays emanating from the source and directed onto select ones of the detector elements, the apertured device being adjustable in the Z-axis direction so that the thickness of the beam can be controlled so as to generate X-rays from the source only toward the select ones of the detector elements having detection areas substantially matched to the thickness of the corresponding beam.