Patent ID: 6556653
Filing Date: 2003-04-29
Classification: G01N

Abstract:
A system for inspecting an object, comprising:a structure having a first, second and third orthogonal axes; a source of collimated x-ray pencil beam mounted to said structure along said first axis; an incident radiation detector mounted to said structure perpendicularly to said first axis; a first linear array of scattered radiation detectors mounted to said structure perpendicularly to said second axis; a second linear array of scattered radiation detectors mounted to said structure perpendicularly to said third axis; said source of collimated x-ray pencil beam, said incident radiation detector and said first and second linear arrays of scattered radiation detectors being spaced apart and defining therebetween an inspection zone; and means for moving an object relative to said source of collimated x-ray pencil beam, mounted to said structure in said inspection zone, such that radiation measurements available from said incident radiation detector and said first and second linear arrays of scattered radiation detectors when inspecting a voxel in an object in said inspection zone are indicative of incident radiation attenuation through said voxel, scattered radiation attenuation through said voxel and electron density of said voxel.