Patent ID: 8442293

Claim:
A method for reconstructing image data of an examination subject from measured data, wherein the measured data was acquired in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination subject, and wherein a limited area between the radiation source and a detector represents a field of view in respect of which measured data is acquireable, and wherein parts of the examination subject were located at least temporarily outside the field of view during the measured data acquisition, the method comprising: reconstructing first image data from the measured data; determining a boundary of the examination subject with an aid of the first image data; modifying the first image data using the determined boundary; calculating projection data from the modified first image data; modifying the measured data using the calculated projection data; and reconstructing second image data from the modified measured data, wherein pixel values of pixels within the determined boundary and outside the field of view are changed in the course of the modification of the first image data, and said pixel values are assigned a constant value.