Radiation Protection Dosimetry · 2008 · 26 citations · 8 references
MedicineNuclear MedicineRadiologyDiagnostic RadiologyMedical PhysicsRadiation DosimetryDose CalculationMonte Carlo DosimetryPatient-specific DosimetryPhantom DosimetryPhoton DosimetryRadiation Dose MeasurementMean Organ DoseMonte Carlo Dose ModelingMonte Carlo Dose SimulationMonte Carlo Phantom DosimetryOrgan Dose EstimationOrgan DosimetryPhantom-based Dose MeasurementRadiation Dose Assessment
The objective of this study is to evaluate the precision of dose-calculation computer codes used in our laboratory (PCXMC and PREPARE) for organ dose evaluation. Measurements of entrance and organ dose were performed using ionisation chamber and thermoluminescence dosimetry. To obtain a mean dose of organ, we have used the Rando-Alderson phantom. The results showed that computed and measured doses correlate well (within 28%) in 60% of the samples. The percentage shows that the computed doses correlate with the experimental doses rather well for PCXMC software than PREPARE. Although the two programs are based on the Monte-Carlo method, their calculations differ. PCXMC carries out a simulation of the trajectory of the photon, whereas PREPARE provides interpolated values. Our experimental results are close to the values given by the PCXMC, a program which takes into account the weight, the height of the patient and field dimensions.
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