Methods of scatter correction of X-ray projection data 1

A non-transitory computer readable medium containing a sequence of instructions for adjusting an estimate of scattered radiation of a target object, which in response to execution by a processor of a computer system, cause the computer system to:

• a) generate a plurality of radiographic projections;
• b) select a first radiographic projection and a second radiographic projection of the target object from the plurality of radiographic projections;
• c) form first estimates of scattered radiation in the first and second radiographic projections;
• d) apply the first estimates of scattered radiation to the first and second radiographic projections to generate a modified first radiographic projection and a modified second radiographic projection;
• e) compare the modified first and second radiographic projections to generate correction modules;
• and
• f) apply one of the correction modules to a first subset of the plurality of radiographic projections and another of the correction modules to a second subset of the plurality of radiographic projections.

A method to form an adjusted estimate of scattered radiation in an initial radiographic projection of a target object, comprising:

• generating at least two secondary radiographic projections of said target object;
• forming a first estimate of scattered radiation based on said initial radiographic projection in each of said at least two secondary radiographic projections of said target object, wherein said initial radiographic projection can be one of said secondary radiographic projections;
• applying said first estimate of scattered radiation in each of said at least two secondary radiographic projections of said target object to yield at least two corrected secondary radiographic projections of said target object;
• 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
• 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.