Dual - source - ct - apparatus and method for spiral scanning

摘要

The present invention relates to a dual - source - ct - device (1) with two on a gantry arranged at offset focus - detector - systems (2, 3; 4,5) and a method for the spiral scanning and for the reconstruction of tomographic image data of a patient (7), wherein the detectors (3, 5) in the system axes of the direction of a different z - width and a computer system (10) with a program memory with at least one computer program (prg₁–prg_n), by means of which, in operation, the dual - source - ct - device (1) a spiral scanning of a patient (7) and controls of the two absorption data obtained in this case of unequal widths detectors (3, 5) are reconstructed ct - image data, wherein, in particular, a spiral with a table feed per revolution is controlled, which is greater than the with the narrower detector possible maximum table feed.