Patent ID: 9357973
Filing Date: 2016-06-07
CPC Classification: A61B,G21K

Claim Text:
1. An imaging system, comprising: a radiation source that emits x-ray radiation from a focal spot in a direction of an examination region, and radiation source rotates about the examination region and about a z-axis along which defines a z-direction, with a y-axis defining a y-direction orthogonal to the z-direction, and an x-direction defining an x-axis orthogonal to the z-direction and y-direction; a beam shaper located between the focal spot and the examination region, that shapes an x-ray transmission profile of the x-ray radiation emitted from the source and incident on the beam shaper such that the radiation leaving the beam shaper has a pre-determined transmission profile, wherein the beam shaper has a central region along the z-direction and further includes a two dimensional array of individual radiation attenuating elements attenuating x-ray radiation separated from each other, embedded in a substrate and arranged such that a density of the attenuating elements increases from the central region in a direction away from the central region along the x-axis direction, wherein the individual radiation attenuating elements fully or substantially fully attenuate x-rays, wherein the attenuating elements are focused at the focal spot; and a source collimator disposed between the beam shaper and the examination region which collimates the shaped x-ray radiation.