Dosimetric comparison of Monte Carlo codes (EGS4, MCNP, MCNPX) considering external and internal exposures of the Zubal phantom to electron and photon sources
Résumé
This paper aims at comparing dosimetric assessments performed with three Monte Carlo codes: EGS4, MCNP4c2 and MCNPX2.5e, using a realistic voxel phantom, namely the Zubal phantom, in two configurations of exposure. The first one deals with an external irradiation corresponding to the example of a radiological accident. The results are obtained using the EGS4 and the MCNP4c2 codes and expressed in terms of the mean absorbed dose (in Gy per source particle) for brain, lungs, liver and spleen. The second one deals with an internal exposure corresponding to the treatment of a medullary thyroid cancer by 131I-labelled radiopharmaceutical. The results are obtained by EGS4 and MCNPX2.5e and compared in terms of S-values (expressed in mGy per kBq and per hour) for liver, kidney, whole body and thyroid. The results of these two studies are presented and differences between the codes are analysed and discussed. © The Author 2005. Published by Oxford University Press. All rights reserved.
Mots clés
iodine 131
article
brain
controlled study
dosimetry
electron radiation
intermethod comparison
liver
lung
Monte Carlo method
phantom
photon
radiation absorption
radiation dose
radiation dose distribution
radiation exposure
spleen
thyroid medullary carcinoma
tissue distribution
Computer Simulation
Electrons
Environmental Exposure
Humans
Models
Biological
Statistical
Monte Carlo Method
Phantoms
Imaging
Photons
Radiation Dosage
Radiation Protection
Radiometry
Software
Software Validation