The Importance of Accurate X-ray Energy Spectra for Modelling Dose Deposition with Monte Carlo Techniques

摘要

X-ray Spectra are generated for a tungsten target X-ray source operating at 120 kVp for dose prediction purposes. Disparity is found between the analytical, Monte Carlo and spectroscopic method. It is shown through Thermoluminescent Dosimeter (TLD) dose measurement that the spectroscopic method is most representative of the X-ray source spectrum in use. Effects of such disparity is considered in the context of clinical radiography through human simulation. A similar disparity is also observed in a related Molybdenum target source.