Feasibility of Radiophotoluminescent Glass Dosimeter for Measuring Radiation Dose in Kilovoltage Cone-beam Computed Tomography.

PURPOSE: Cone-beam computed tomography (CBCT) is widely used in imaging-guided radiotherapy for precise treatment planning and patient positioning. However, the ionizing radiation used in CBCT poses inherent risks to patients.

MATERIALS AND

METHODS

This study evaluated the feasibility of radiophotoluminescent. glass dosimeter system GD-352M for measuring radiation dose in kilovoltage CBCT (kV-CBCT).

RESULTS

The GD-352M demonstrated good uniformity, linearity, accuracy, reproducibility, and low-energy dependence. Moreover, the FDG-1000 automatic reader system exhibited consistent readout values that were not influenced by the magazine's position. The GD-352M demonstrated good uniformity, linearity, and accuracy, with a combined measurement uncertainty of 4.56%, confirming its suitability for kV-CBCT dosimetry.

CONCLUSION

These findings indicate the suitability of the GD-352M dosimeter for measuring dose range in kV-CBCT and improve patient safety in kV-CBCT dosimetry.