OEDIPE: a new graphical user interface for fast construction of numerical phantoms and MCNP calculations

Abstract

Although great efforts have been made to improve the physical phantoms used to calibrate in vivo measurement systems, these phantoms represent a single average counting geometry and usually contain a uniform distribution of the radionuclide over the tissue substitute. As a matter of fact, significant corrections must be made to phantom-based calibration factors in order to obtain absolute calibration efficiencies applicable to a given individual. The importance of these corrections is particularly crucial when considering in vivo measurements of low energy photons emitted by radionuclides deposited in the lung such as actinides. Thus, it was desirable to develop a method for calibrating in vivo measurement systems that is more sensitive to these types of variability. Previous works have demonstrated the possibility of such a calibration using the Monte Carlo technique. Our research programme extended such investigations to the reconstruction of numerical anthropomorphic phantoms based on personal physiological data obtained by computed tomography. New procedures based on a new graphical user interface (GUI) for development of computational phantoms for Monte Carlo calculations and data analysis are being developed to take advantage of recent progress in image-processing codes. This paper presents the principal features of this new GUI. Results of calculations and comparison with experimental data are also presented and discussed in this work.

Monte Carlo Simulation in Radionuclide Therapy Dosimetry

“…The use of voxel models in MC radiation transport codes has contributed to the improvement of dose calculations. OEDIPE software based on MCNPX code was developed by the "French Institut de Radioprotection et de Sûreté Nucléaire" (IRSN), in order to investigate the body burden from internal contamination [41,42]. The GSF-GOLEM model was coupled with the FLUKA MC Radiation transport code for space dose assessment [43].…”

Efficient Calculation of in vivo Efficiency Curves Using Variance Reduction Techniques

“…The MCNPX input file was generated using the OEDIPE software and by specifying the detectors, the phantoms and the source to reproduce a typical in vivo pulmonary measurement. 11) In this study, the counting system used for the simulations was that of the AREVA La Hague medical analysis department. This system consists of 4 germanium detectors that were modeled and validated in a previous study.…”

Nouvelle méthode de surveillance des travailleuses du nucléaire par anthroporadiamétrie : utilisation des calculs Monte Carlo associés aux fantômes déformables de type Mesh et NURBS

“…Une fois les modèles voxelisés prêts, ils sont chargés dans le logiciel OEDIPE (Franck et al, 2007) acronyme pour outil d'evaluation de la dose interne pérsonnalisée. Ce dernier permet de modéliser rapidement l'expérience réalisée et de générer un fichier d'entrée pour le code MCNPX.…”