Sakinah, Sakinah (2026) Evaluation of Photon and Electron Beams in A Linear Accelerator Using A Water Phantom Based on IAEA Protocol Standards. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
As cancer remains on of the leading causes of global mortality, the advancement of treatment methods such as radiotherapy using Linear Accelerator (LINAC) technology is vital. The succes of this therapy relies heavily on dose accuracy, making regular evaluation of machine output a critical necessity. This study evaluates the electrical charge, output deviation, and operational stability of the Varian TrueBeam LINAC for photon and electron beams, guided by the IAEA TRS-398 and TRS-483 international protocols. Measurements were conducted using a water phantom, covering 6 MV photon energies in both With Flattening Filter (WFF) and Flattening Filter Free (FFF) modes, as well as electron energies ranging from 6 to 18 MeV. The findings indicate that photon beams in WFF mode maintain high stability with deviations between ±0.2% and 1%. While the FFF mode initially exhibited larger deviations, technical adjustments successfully refined the precision to a remarkable ±0.01%,. For electron beams, the most consistent performance was observed at 9 MeV and 12 MeV. Although some energy levels initially approached the tolerance threshold, post-adjustment results confirmed they returned to safe operational limits. Statistical analysis (T-Test and ANOVA) further demonstrates that despite technical variations in energy and voltage, the LINAC system consistently shows solid repeatability. In conclusion, the Varian TrueBeam LINAC meets rigorous international standards for accuracy, ensuring it is safe and reliable for clinical use in patient cancer treatment.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||||
| Divisions: | Faculty of Engineering > Physics | ||||||||||||
| Depositing User: | Sakinah 22037010019 Sakinah | ||||||||||||
| Date Deposited: | 04 May 2026 01:50 | ||||||||||||
| Last Modified: | 04 May 2026 01:50 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/51424 |
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