A dosimetry procedure based on storage phosphors with short fading time

Area of Science:

• Medical Physics
• Radiation Dosimetry
• Materials Science

Background:

• Storage phosphors are crucial for radiation dosimetry but suffer from signal fading.
• Accurate data retrieval is challenging with short fading times and long exposure durations.
• Existing methods may not adequately address complex fading behaviors.

Purpose of the Study:

• To develop a numerical approach for retrieving radiation exposure data from storage phosphors.
• To address the challenge of short fading times in long exposure scenarios.
• To create a method robust against environmental and reading variations.

Main Methods:

• A numerical algorithm based on first-order kinetic models was developed.
• The algorithm was extended to accommodate generic kinetic orders.
• Simulations incorporated temperature effects, reading variations, and measurement errors.

Main Results:

• The proposed algorithm successfully retrieves radiation exposure data under challenging conditions.
• Simulations demonstrated the algorithm's effectiveness in the presence of fading and noise.
• The method shows potential for accurate dosimetry even with signal decay.

Conclusions:

• A viable numerical solution exists for accurate radiation dosimetry with fading storage phosphors.
• The algorithm offers improved data retrieval for unpredictable exposure scenarios.
• Further characterization of fading properties can enhance the method's applicability.