Author/Authors :
Singh V.P نويسنده Department of Mechanical Engineering, Pec University of Technology, India , Shirmardi Pezhman نويسنده Radiation Application Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran , Adeli Rouhollah نويسنده Central Iran Research Complex (Yazd) - Nuclear Science and Technology Research Institute (NSTRI) , Amiri Jamal نويسنده Department of radiotherapy - faculty of paramedical sciences - Kurdistan University of medical sciences , Medhat M.E. نويسنده Experimental Nuclear Physics Departments - Nuclear Research Centre
Abstract :
Monte Carlo method is a very accurate method to optimize medical diagnostic radiology spectra and simulation of radiation transportation. Using MCNP code, radiology and mammography attenuated x-rayspectraweresimulated.The IPEM report number 78 was used as a reference to compare with the GEANT4 and MCNP simulations because of its popularity and wide availability. The results of GEANT4 in 40keV showed a good homogeneity with IPEM report in terms of intensity, whilst the MCNP code in tube voltage 150kVp showed a very good agreement. Whereas theGEANT4outputintensityinallcases was less than the IPEM report, MCNP code showed higher characteristic peak intensity. The MCNP results were obtained with a less error percentage in comparison with IPEM reportexceptatlowenergies. The comparison shows a good agreement between these two codes. MCNP shows a very goodagreement in high tube voltage whereas GEANT4 showsvery goodagreement in low tube voltage.
