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Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification (ADCI) and Dose Estimation

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Dose point kernel simulation for monoenergetic electrons and radionuclides using Monte Carlo techniques.

J Wu¹, Y L Liu, S J Chang

¹Department of Biomedical Imaging and Radiological Science, China Medical University, 40402 Taichung, Taiwan, ROC.

Radiation Protection Dosimetry

|August 28, 2012

Summary

Monte Carlo (MC) simulation results from FLUKA and MCNP5 show good agreement for dose point kernels and cellular S-values. Minor inconsistencies were observed at low energies, highlighting the need for quality assurance in MC simulations.

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Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

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Published on: March 11, 2021

Area of Science:

Medical Physics
Computational Dosimetry
Radiation Biology

Background:

Monte Carlo (MC) simulations are crucial for radiation dose evaluation in medical applications and accident scenarios.
Accuracy in MC simulations depends on algorithms, databases, random number generators, and statistical error.
Validation of different MC software packages is essential due to potential discrepancies.

Purpose of the Study:

To validate and compare the simulation results of dose point kernels (DPK) and cellular S-values between FLUKA and MCNP5.
To assess the consistency of these two widely used MC simulation codes.
To identify potential discrepancies, particularly in specific energy ranges or scenarios.

Main Methods:

Simulated DPK and cellular S-values for monoenergetic electrons (0.01–2 MeV) and radionuclides (90Y, 177Lu, 103mRh).
Utilized Fluktuierende Kaskade (FLUKA) and MC N-Particle Transport Code Version 5 (MCNP5) for simulations.
Constructed a 6-μm-radius cell model (cell surface, cytoplasm, nucleus) for cellular S-value calculations.

Main Results:

Mean absolute percentage errors (MAPEs) for scaled DPKs were within 7.92% for electrons and 5% for radionuclides.
Maximum deviations for cellular S-values (S(N←N), S(N←Cy), S(N←CS)) were within 6.77% for electrons >10 keV.
Self-absorbed and cross-dose S-values for radionuclides showed deviations within 4%.

Conclusions:

Simulation results from FLUKA and MCNP5 demonstrate good consistency for DPK and cellular S-value calculations.
Minor inconsistencies were noted between the two codes at lower electron energies.
DPK and cellular S-values serve as valuable quality assurance tools for MC simulation validation.