Modeling spectral properties of X-ray sources for dosimetric Monte Carlo simulations of computed tomography: Influence on total energy deposition and spatial distribution of deposited energy

For the use of different X-ray spectra, Etotal and Espatial are comparable for matching peak tube potential and Emean. Additionally, simulations of accurate Espatial require modeling of beam-shaping. Monoenergetic photons matching Emean,ref should not be employed for X-ray source emission modeling due to large inaccuracies in Espatial.