Methods, apparatus, and computer-program products for increasing accuracy in cone-beam computed tomography

A method of processing projection data comprising:

• acquiring a set of radiographic projections of an object that has been taken with a portion of the pixels being obscured from the cone-beam radiation;
• acquiring an indication of which pixels have been obscured;
• and
• generating estimates of scattered radiation from the values of the obscured pixels.

A computer-program product that directs a data processor to process projection data, the product comprising:

• a computer-readable medium;
• a first set of instructions embodied on the computer-readable medium that directs a data processor to acquire a first set of radiographic projections of an object with a portion of the pixels being obscured from the cone-beam radiation;
• a second set of instructions embodied on the computer-readable medium that directs the data processor to acquire an indication of which pixels have been obscured in at least the second set;
• a third set of instructions embodied on the computer-readable medium that directs the data processor to generate estimates of scattered radiation from the values of the obscured pixels;
• and
• a fourth set of instructions embodied on the computer-readable medium that directs the data processor to store the estimates of the scattered radiation on a computer-readable memory.