Patent ID: 8396274

Claim:
An imaging system for imaging a field of interest, comprising: an irradiation unit that emitts radiation for irradiating the field of interest, a moving unit for that moves the irradiation unit relative to the field of interest along a first trajectory and that moves the irradiation unit along a second trajectory, a detection unit that detects first detection data depending on the radiation after passing through the field of interest when the irradiation unit is moved along the first trajectory, and that detects second detection data depending on the radiation after passing through the field of interest when the field of interest is irradiated along the second trajectory, a reconstruction unit that reconstructs an intermediate image of the field of interest from at least the second detection data and that reconstructs an image of the field of interest from the first detection data which correspond to one or several sections on the first trajectory, and virtual detection data, a forward-projection unit that determines the virtual detection data by forward projection through the intermediate image, wherein the first trajectory is arranged within a plane that intersects the field of interest and wherein the second trajectory is arranged at least partially outside said plane, wherein the forward-projection unit is adapted such that the forward projection is done along a virtual trajectory arranged such that it matches the first detection data which are used to reconstruct the image of the field of interest, so as to obtain complete data for reconstructing the image of the field of interest, wherein the forward-projection unit is adapted such that the virtual trajectory is arranged such that it intersects the plane at the one or several sections on the first trajectory.