calibrating detector crosstalk information to provide calibrated detector crosstalk information;

accessing a memory having stored therein:

total detected computed tomography image signal information in a projection domain for an object;

a first model representing object scatter;

a second model representing background scatter, wherein the second model is separate and distinct from the first model; and

a third model representing detector crosstalk, wherein the third model is generated as a function, at least in part, of the calibrated detector crosstalk information; and

prior to a reconstruction step, processing the total detected computed tomography image signal information in the projection domain for the object as a function of each of the first model, the second model, and the third model to thereby compensate for object scatter, background scatter, and detector crosstalk by providing scatter and crosstalk-corrected computed tomography image signal information in the projection domain for the object.