Patent ID: 7058157
Filing Date: 2006-06-06
Classification: A61B,G06T,Y10S

Abstract:
1. A method for producing images in spiral computed tomography, comprising: scanning an object to be examined, with at least one conical beam emanating from a focus, by moving the at least one focus around the object on a spiral focal track; detecting, using at least one planar detector, the at least one beam, the at least one detector supplying output data corresponding to detected radiation; and reconstructing at least one of sectional and volume images of the scanned object from the output data, wherein at least one spatial weighting of the data used for calculation is undertaken for the purpose of reconstruction, wherein the at least one detector and at least one beam are tuned to one another in such a way that a drop in dose rate occurs at the edges within the detector, wherein a form of the weighting function corresponds at least approximately to at least one of the dose rate characteristic and to the characteristic of the signal quality of the detector and wherein the drop in dose rate occurs exclusively in the z-direction.