Patent ID: 9478050
Filing Date: 2016-10-25
CPC Classification: G06T

Claim Text:
1. An imaging system for imaging an object, the imaging system comprising: a projection data providing unit which includes a configured computer for providing acquired projection data of the object, wherein the projection data have been acquired by moving a radiation source emitting both primary radiation from a primary focal spot and secondary radiation from secondary focal spots and by detecting the projection data, which are indicative of the primary radiation and the secondary radiation after having traversed the object, while the radiation source and the object are moved relative to each other, wherein the secondary radiation is formed at the secondary focal spots by secondary electrons emanated as a by-product of the primary radiation from the primary focal spot; a reconstruction unit which includes a configured computer for reconstructing a first image of the object from the acquired projection data; a forward projection unit which includes a configured computer for simulating a forward projection of the secondary radiation from the secondary focal spots through the first image which generates simulated secondary projection data; and wherein the reconstruction unit is futher adapted to determine difference projection data by subtracting the simulated secondary projection data from the acquired projection data and to reconstruct a second image from the difference projection data.