A Fiber-Optical Dosimetry Sensor for Gamma-Ray Irradiation Measurement in Biological Applications

Abstract

In this paper, we propose a novel fiber-optical dosimetry sensor for radiation measurement in biological applications. A two-dimensional (2D) fiber-optical dosimeter (FOD) for radiation measurement is considered. The sensors are arranged as a 2D array in a tailored holder. This FOD targets accurate industrial and medical applications which seek more tolerant radiation dosimeters. In this paper, the FOD sensors are subjected to gamma-ray radiation facilities from the 137Cs gamma-ray irradiator type for low doses and 60Co gamma-ray irradiator for high doses. For better evaluation of radiation effects on the FOD sample, the measurements are performed using eight sensors (hollow cylinder shape) with two samples in each dose. The sensors were measured before and after each irradiation. To the author’s knowledge, the measurements of FOD transplanted inside animals are presented for the first time in this paper. A 2D simulation program has been implemented for numerical simulation based on the attenuation factors from the absorbed dose inside the in vivo models. A comparison between the FOD and the standard thermo-luminescence detector is presented based on the test of in vivo animal models. The results indicate that the proposed FOD sensor is more stable and has higher sensitivity.

Biocompatibility and radiosensitivity of a fiber optical-based dosimeter: biological applications

“…The kinetic parameters of the TL glow curves are determined via a Computerized Glow Curve Deconvolution (CGCD) method to evaluate the kinetic parameters of the TL materials [ 27 – 30 ], such as activation energy, order of kinetics, the CGCD method can be applied [ 31 ]. The current study matches our previous research [ 14 ] concerning the TL properties of the FOD.…”

“…H&E staining was used to characterize oedema, cell infiltration, fibrotic capsule formation, and changes in skin dimensions. The material system of the current FOD would be biocompatible because the individual components have been reported to be biocompatible as previously reported by Elsharkawi et al [ 14 ] and Guo et al [ 44 ].…”

“…Small scintillating Fiber-Optic Dosimeters (FODs) show promise for irradiation measurements in diverse applications, from medical to industrial settings. Unlike conventional dosimeters like TLD-100, multiple FODs can be accommodated within a single unit, enabling more precise and localized dose assessments [ 14 ]. Optical fiber dosimeters also excel in measuring high radiation doses without saturation or loss of sensitivity [ 14 ].…”

“…Unlike conventional dosimeters like TLD-100, multiple FODs can be accommodated within a single unit, enabling more precise and localized dose assessments [ 14 ]. Optical fiber dosimeters also excel in measuring high radiation doses without saturation or loss of sensitivity [ 14 ].…”

“…Implementing proper handling protocols is crucial to ensure accurate measurements and prevent contamination or sample loss. Our previous research [ 14 ] has explored various approaches to address this issue, thereby enhancing the accuracy of dosimetry measurements across different applications. Furthermore, strategically deploying FODs across various locations for radiation mapping and monitoring can offer invaluable insights for emergency response planning and occupational safety.…”