Patent ID: 9158029
Filing Date: 2015-10-13
Classification: G01V

Abstract:
1. A multi-stage screening system for screening a container, said multi-stage screening system comprising: a pre-screening stage comprising a transmission X-ray device, said pre-screening stage configured to generate constraint data associated with the contents of the container; a screening stage comprising an X-ray diffraction imaging (XDI) device, said screening stage configured to generate image data associated with the contents of the container; and a communication system coupled to said pre-screening stage and said screening stage, said communication system configured to receive and transmit said constraint data and reconstruct at least one image of the container at least partially as a function of said constraint data and said image data, wherein said communication system is further configured to iteratively reconstruct the at least one image of the container using: estimated XDI image data at least partially generated from said constraint data; actual image data generated by a scan performed by said screening stage; and calculated differences between said estimated XDI image data and the actual image data.