Correction of measurement by HP-G[lc]e detector for incident diagnostic X-ray photons

Abstract

It is necessary to obtain corrected X-ray spectra in order to produce diagnostic images and to evaluate exposure dose. In this study, the compensation of a spectra obtained using a high-purity germanium crystal was performed using Monte Carlo simulation code EGS4. The photon energy of the high-purity germanium crystal was consistent with manufacturer specifications. The stripping method was used to eliminate scattered radiation inside the high-purity germanium semiconductor detector. The HP-Ge detector was used to obtain an absorption spectrum, which includes a component of photon interaction in the HP-Ge crystal. The component of the spectrum, including Photo-Peak, sum-escape, K-escape and Compton escape, attributable to the interaction between the mono-energy state and high-purity germanium was obtained between 0 keV and the maximum energy of the X-ray tube using the Monte Carlo simulation code EGS4. The effect of scattered photons was successfully removed from the spectrum of photons emitted from the target of an X-ray Tube using this simulation code. It is important to apply this compensation in order to obtain correct spectra of incident photons inside the detector.