Patent ID: 8199879

Claim:
A method of forming an adjusted estimate of scattered radiation in an initial radiographic projection of a target object, comprising: forming a correction to a first estimate of scattered radiation in said initial radiographic projection of said target object by: a) generating at least two secondary radiographic projections of said target object; b) forming said first estimate of scattered radiation in each of said at least two secondary radiographic projections of said target object and applying said first estimate of scattered radiation in each of said at least two secondary radiographic projections of said target object to said at least two secondary radiographic projections of said target object to yield at least two corrected secondary radiographic projections of said target object; c) comparing said at least two said corrected secondary radiographic projections of said target object to detect an error in said first estimate of scattered radiation in said at least two secondary radiographic projections; and d) forming a correction module and applying said correction module to said first estimate of scattered radiation in said initial radiographic projection to form an adjusted estimate of scattered radiation in said initial radiographic projection, said correction module being derived from said comparing said at least two said corrected secondary radiographic projections.