US Patent 7634045 Fifth generation x-ray computed tomography system and operating method

A fifth generation x-ray computed tomography system has at least one electron beam generator that generates at least one electron beam, an anode ring or partial anode ring arranged concentrically around a system axis, from which x-ray radiation can be generated at a number of focus positions by striking the ring or partial ring with the at least one electron beam, a detector ring or partial detector ring arranged concentrically around the system axis, with a number of detector elements forming at least one detector row to detect the impinging x-ray radiation; and a rotatable support frame on which filter and collimator elements are carried. The filter and collimator elements are arranged at the focus on the support frame at at least two positions that are angularly offset relative to one another.