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Performance Characteristics of a New Automatic Chip TLD Reader.

Sajjad Betyar¹, Seyed Mahdi Hosseini Pooya¹, Meysam Divsalar¹

¹Parto Negar Shahab Pvt. Ltd (Radonik), Tehran, Iran.

Journal of Biomedical Physics & Engineering

|October 22, 2025

Summary

The TR5500 Thermoluminescent Dosimeter (TLD) reader was evaluated for accuracy and reliability in Iran. It meets and exceeds international standards for dosimetry, ensuring dependable TLD measurements for accredited laboratories.

Keywords:

Dosimetry Equipment Design Health Care Radiation Monitoring Reader TLD Thermoluminescent

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Area of Science:

Medical Physics
Radiation Dosimetry
Instrumentation Science

Background:

Implementing a Quality Management System (QMS) is crucial for dosimetry laboratories, as per International Atomic Energy Agency (IAEA) guidelines.
Accurate and reliable Thermoluminescent Dosimeter (TLD) readers are essential for consistent radiation measurement in various applications.
The TR5500 TLD reader was developed in Iran for automated readout of TL chips and pellets.

Purpose of the Study:

To evaluate the performance characteristics of the TR5500 TLD reader.
To assess its compliance with international standards for dosimetry equipment.
To confirm its suitability for routine use in accredited dosimetry laboratories.

Main Methods:

LiF: Mg, Cu, P TLDs were irradiated in a standard photon radiation field.
The TR5500 reader was used to measure the thermoluminescent response of the TLDs.
Key performance metrics including non-linearity, Coefficient of Variation (COV), stability, and reproducibility were calculated.
Results were compared against International Electrotechnical Commission (IEC) and American Society for Testing and Materials (ASTM) standards (e.g., ASTM E668-10, IEC 62387).

Main Results:

The TR5500 TLD reader demonstrated excellent readout stability and reproducibility.
The reader met or exceeded key performance criteria specified by international standards.
Non-linearity and COV values were within acceptable limits for accredited dosimetry.

Conclusions:

The TR5500 TLD reader is a reliable and robust instrument for automated thermoluminescent dosimetry.
Its performance validates its suitability for routine use in accredited dosimetry laboratories.
The reader contributes to ensuring accurate radiation measurements in compliance with international standards.