Patent ID: 7039152
Filing Date: 2006-05-02
Classification: A61B,Y10S

Abstract:
1. A method for production of tomographic section images of a periodically moving object with periodically changing movement and rest phases, the method comprising: moving n focus detector combinations with flat detectors, to scan the at least partially periodically moving object, on n coaxial spiral paths relative to the object to be examined; gathering detector output data together from the detectors, which represent attenuation of beams which originate from foci as they pass through the examination object, the data being gathered together with at least one of the indirect and direct spatial orientation data of the beams; measuring movement signals of the moving object to detect movement and rest phases; storing time correlation between the movement data and the detector output data being stored; reconstructing axial segment image stacks, independently of one another, from sub-segments of the spiral paths using the detector output data from each detector representing a rest phase of the moving object, wherein segment image stacks from the n spiral paths of the n focus detector combinations at the correct time are added up in a complementary angle form and in layers to form 180° tomography section images, with the axial segment image stacks being reconstructed in a first step from double-inclined reconstruction planes and, in a second step, being reformatted to produce axial segment image stacks, and wherein detector data from a number of successive movement periods are used.