A method of calibrating an electron beam tomography (EBT) system includes determining a change in x-ray intensity for detecting elements in each detector array through multiple imaging sweeps during an initial activation of the EBT system, deriving scale factors based on the determined changes in x-ray intensity for the imaging sweeps, and using the scale factors to modify a trajectory and deflection of the electron beam during the multiple imaging sweeps to maintain constant x-ray intensity on each detector array.
