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Feasibility of Radiophotoluminescent Glass Dosimeter for Measuring Radiation Dose in Kilovoltage Cone-beam Computed
Kantida Jittrakool1, Sakda Kingkaew2, Nichakan Chatchumnan2
1Department of Radiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
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.
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