Radiation Dose Assessment in Diagnostic Imaging Using Thermoluminescent Dosimeter-100H Dosimeters and a RANDO Phantom: Insights from Chest, Pelvic, and Skull Examinations

Purpose: This study aims to evaluate radiation doses to the skin, pelvis, and skull during routine radiographic imaging procedures. Materials and Methods: Entrance skin dose (ESD) was assessed using both direct and indirect methods. Direct measurements were conducted with thermoluminescent dosimeter (TLD)-100H TLDs placed on an Alderson RANDO female anthropomorphic phantom. Indirect measurements were obtained using the calibrated output of the X-ray tube. Organ dose estimations were also derived through thermoluminescence dosimetry. Results: Direct measurements yielded ESD values of 0.27 mGy for chest, 2.36 mGy for pelvis, and 2.54 mGy for skull radiography. Corresponding values from the indirect method were 0.26 mGy, 2.29 mGy, and 2.43 mGy, respectively. Conclusions: The radiation dose levels obtained are consistent with the national diagnostic reference levels in Iran. These findings support the ongoing optimization of radiographic practices in alignment with the as low as reasonably achievable principle.