Simulation and measurement of diagnostic X-ray radiation qualities

VernacularTitle:诊断X射线辐射质的模拟与测量研究
Author: Dehong LI ; Bin GUO ; Jianwei HUANG ; Di WU ; Yanmei HAO ; Cheng FAN
Keywords: X-rays; Radiation quality; Energy spectrum; Monte Carlo; High purity Germanium detector
From: Chinese Journal of Radiological Medicine and Protection 2017;37(8):614-617
CountryChina
Language:Chinese
Abstract: Objective To validate the feasibility of the simulationmethod and the reliability of thesimulationresult through comparison between simulation and measurement of the energy spectrum from medical diagnostic X-ray (RQR-Radiation qualities in radiation beans emerging from the X-ray source assembly).Methods A simplified model of the medical diagnostic X-ray RQR radiation quality was established using code of BEAMnrc.The energy spectrum of the same RQR radiation quality were measured through a plane high-purity germanium spectrometer,and compared with the simulationresult.Results The difference of spectral distribution between measurement and simulation was less than 3％,in spite of the convolution processing not happened to the pulse height distribution measured by the spectrometer.And the spectral distribution,fluence,energy fluence,means energy distribution of the radiation was obtained using the code of BEAMDP.Conclusions As indicated above,it is possible to use the simulation of the energy distribution as a foundation for the establishment of X-ray RQR radiation quality.