Measurement of Absorbed Dose in Water Using Co-60 gamma source Teletherapy Units According to IAEA Dosimetry Protocols

Authors

DOI:

https://doi.org/10.24996/ijs.2022.63.10.13

Keywords:

Co-60 Teletherapy Units, Technical Report Series (TRS), Absorbed Absolute Dose

Abstract

      Modern radiotherapy facilities like 3-Dimensional conformal radio therapy (3DCRT), Intensity Modulated Radiotherapy (IMRT), were recently suggested in Co-60 machine with Multi-leaf Collimator (MLC). In this study, two reference chambers NE-2571#1205 and NE2581#537 were used for absolute dose measurement in Equinox accelerator. A comparison of dose measurement by two different IAEA protocols TRS-277 and TRS-398 has been studied. Analyzing TRS-398, a common shaped empirical formula was developed for the four Co-60 units of four Medical Colleges in Bangladesh with fitting parameters. It was found that an average discrepancy in the determination of absorbed dose in water among the two different protocols TRS-277 and TRS-398 were 1.33 % for the chamber NE-2571#1205 and 0.65 % for the chamber NE2581#537 with combined uncertainty ±1.59 % (k=1). A good convergence has been obtained in the concepts and methods in this study.

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Published

2022-10-30

How to Cite

Md. Minhaj Hossain, Santunu Purohit, Tanjim Siddiqua, Md. Shakilur Rahman, Mohammed Didarul Alam Mojumder, Md Jubayer Rahman Akhand, & AKM Moinul Haque Meaze. (2022). Measurement of Absorbed Dose in Water Using Co-60 gamma source Teletherapy Units According to IAEA Dosimetry Protocols. Iraqi Journal of Science, 63(10), 4267–4272. https://doi.org/10.24996/ijs.2022.63.10.13

Issue

Section

Physics