Patent ID: 6826251
Filing Date: 2004-11-30
Classification: A61B

Abstract:
A multislice CT apparatus comprising:a detector including a plural number of detector elements arranged in an axial direction of the multislice CT apparatus; a moving table on which an object to be examined is placed to be examined with a rotating X-ray source and at least ones of the plural number of detector elements, to acquire a plural number of spiral projection data; a correction processing means for performing correction processes to the spiral projection data; and an image reconstruction means for reconstructing a tomographic image from corrected spiral projection data; wherein the correction processing means has a weighting coefficient table storing a plural number of predetermined different multislice spiral weighting coefficients corresponding to predetermined ones of spiral pitch of a table moving amount at rotation against a row interval of the detector, and selects one of the plural number of predetermined different multislice spiral weighting coefficients in accordance with a predetermined spiral pitch at measurement for applying weighting to the spiral projection data of each row, and combines the spiral projection data after applying weighting application to each detector element row.