1. A projection values processing apparatus for processing acquired projection values, the projection values processing apparatus comprising: an acquired projection values providing unit for providing acquired projection values, a reconstruction unit for reconstructing a first image from the acquired projection values under consideration of a reconstruction assumption, a simulated projection values determining unit for determining simulated projection values by simulating a projection through the reconstructed first image under consideration of the reconstruction assumption, an inconsistency determining unit for determining inconsistency values for the acquired projection values, wherein an inconsistency value is indicative of a degree of inconsistency of a respective acquired projection value with the reconstruction assumption, by comparing the acquired projection values and the simulated projection values.