RADIATION PROTECTION ›› 2020, Vol. 40 ›› Issue (6): 522-526.

• Radiation Dosimetry • Previous Articles     Next Articles

Rat organ dose calculation for external photon irradiation basedon voxel model based on voxel model

ZHANG Xiaomin, LI Dawei, NING Jing, XIE Xiangdong   

  1. Academy of Military Medical Sciences,Academy of Military Sciences,Beijing 100850
  • Online:2020-11-20 Published:2021-01-27

Abstract: To obtain the organ dose of externally exposed rat for studying dose-effect relationship in radiation medicine,a voxel model based on Micro-CT images of a SD rat was developed to calculate rat organ dose for external photon irradiation.The rat voxel model had a size of 0.16 mm×0.16 mm×2 mm,weighed about 323 g and contained most of the key organs or tissues.Monte Carlo simulation was carried out to obtain organ dose conversion coefficients for 21 external monoenergetic parallel photon beams between 10 keV and 10 MeV under four different irradiation geometry conditions.The organ dose with varying photon energy was also discussed and analyzed.

Key words: organ dose, voxel model, monte carlo simulation, external photon irradiation

CLC Number: 

  • TL72