METHOD AND ARRANGEMENT FOR ENHANCING IMAGE QUALITY IN A COMPUTED TOMOGRAPHY IMAGING SYSTEM

摘要

The present invention relates to a method and an arrangement enhancing image quality of a computed tomography image. A noise reduction scheme is provided, where the original image data is replaced by its approximation values obtained from a robust es timation of a locally selected signal model. The parameters controlling the estimation are controlled by the Hounsfield value of the point where the result is equated.