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Published on: April 24, 2020
Calculation of personal dose equivalent for positron-emitting radionuclides using Monte Carlo code EGS5
1Fujita Health University of Health Sciences, 1-93 Denrakugakubo, Kutsukake, Toyoake, Aichi 470-1192, Japan.
Medical staff radiation dose from positron emission tomography (PET) was estimated using Monte Carlo simulations for 2-deoxy-2-[(18)F]fluoro-d-glucose ((18)F-FDG). Calculated dose rates were validated against experimental measurements.
Area of Science:
- Medical Physics
- Radiation Dosimetry
- Nuclear Medicine
Background:
- Positron emission tomography (PET) is crucial for medical diagnostics.
- Accurate radiation dose assessment for healthcare professionals is essential.
- Understanding radiation exposure from radiopharmaceuticals like (18)F-FDG is vital.
Purpose of the Study:
- To calculate conversion coefficients for estimating radiation dose from positron emitters.
- To determine dose equivalent rates for medical staff handling (18)F-FDG.
- To validate simulation results with experimental measurements.
Main Methods:
- Utilized the EGS5 Monte Carlo code with user code UCICRPM for calculations.
- Developed user code UCF18DOSE to compute dose equivalent rates for (18)F-FDG.
- Measured dose equivalent rates using a personal dosemeter (DOSE(3)).
Main Results:
- Calculated dose equivalent rates per unit activity at 0.07 mm and 10 mm depths were 0.116 and 0.0352 pSv min⁻¹ Bq⁻¹, respectively.
- Results were obtained at 20 cm from the (18)F-FDG injection tube.
- Simulated and measured dose rates showed good agreement.
Conclusions:
- Monte Carlo simulations provide reliable estimates for radiation dose from (18)F-FDG.
- The developed methods aid in assessing radiation exposure for medical staff in PET facilities.
- This study contributes to radiation safety protocols in nuclear medicine.
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