Computational system for extremity dosimetry in nuclear medicine

Area of Science:

• Medical Physics
• Computational Science
• Radiation Safety

Background:

• Nuclear medicine workers face potential extremity radiation exposure.
• Accurate dosimetry is crucial for monitoring and managing occupational radiation risks.

Purpose of the Study:

• To develop a computational dosimetry system for monitoring extremity radiation dose in nuclear medicine.
• To assess the feasibility and accuracy of a simulation-based approach using digital twins and computer vision.

Main Methods:

• Utilized Monte Carlo simulations to model radiation dose distribution in the hands.
• Created digital twins of workers' hands and radioactive sources based on depth camera imaging.
• Employed computer vision algorithms for real-time position tracking of hands and sources.

Main Results:

• The computational system simulates radiation dose to different hand sections.
• Uncertainty sources within the system components were assessed.
• Simulated doses were, on average, 51% of real dosimeter measurements in proof-of-concept scenarios.

Conclusions:

• The computational dosimetry system shows potential for monitoring extremity doses.
• Further refinement is needed to improve the accuracy of simulated dose estimations.
• This approach offers a novel method for assessing occupational radiation exposure in nuclear medicine.