Siemens Aktiengesell Schaft

Ernst-Peter Ruehrnschopf

Wolfgang Haerer

In a method for correction of scatter radiation errors in radiography and computer tomography, using flat panel detectors, initially an estimation of a scatter radiation distribution Sr(y,z) is undertaken, and a standard correction term &#x3b4;pis subsequently calculated. Noise filtering of the standard correction term &#x3b4;pwith F(&#x3b4;p) is implemented and subsequently the noise-filtered standard correction term F(&#x3b4;p) is added to the logarithmized measured total projection data p. The noise filtering can be implemented adaptively dependent on a previously-determined local noise variance. The method can be implemented in a radiography system and/or by a computer for generation and/or processing of projective and/or tomographic exposures, with a memory containing program codes causing the computer in operation to execute the steps of the method.

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Erlangen, Germany

Ernst-Peter Ruehrnschopf