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IRSN, Institut de radioprotection et de sûreté nucléaire

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


Journal title : Radiation Protection Dosimetry
Volume : 127
Issue : 1-4
Pagination : 262-265
Publication date : 01/11/2007

Document type > *Article de revue

Keywords >

Research Unit > IRSN/DRPH/SDI/LEDI

Authors > BROGGIO David, DE CARLAN Loïc, FRANCK Didier, LAMART Stéphanie, PIERRAT Noëlle

Publication Date > 01/11/2007

Summary

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.

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