Monitoring linear accelerator beam with daily quality assurance phantom

Authors

  • Nirajana Dhoju Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, Nepal
  • Asmita Pudasainee Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, Nepal
  • Bidhyapati Jha Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, Nepal
  • Pramod Kumar Yadav Bhaktapur Cancer Hospital, Dudhpati, Bhaktapur, Nepal
  • Ashok Pokharel Bhaktapur Cancer Hospital, Dudhpati, Bhaktapur, Nepal
  • Kanchan Nyaichai Kathmandu Cancer Center, Changunarayan, Bhaktapur, Nepal
  • Tika Ram Lamichhane Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, Nepal

DOI:

https://doi.org/10.3126/sw.v16i16.56743

Keywords:

Linear accelerator, Quality assurance, Tolerance limit, Phantom

Abstract

This paper aims to analyze the output constancy of a medical linear accelerator using PTW, and to study the suitability as a daily quality assurance device. It is assumed that the device is sensitive enough to detect minor variations in central axis beam, flatness, symmetry, and beam quality factor. PTW, QUICKCHECKwebline is the most efficient wireless device used in daily quality assurance. The measurements of output doses of photons ( 6MV and 15 MV) and electrons (6,9,12, and 15MeV) from a medical linear accelerator before the daily treatment have been graphically analyzed. This study assures the output stability of Varian Clinac iX 2100 CD linear accelerator at Bhaktapur Cancer Hospital, Bhaktapur, Nepal. The beam flatness, symmetry, beam quality factor, and central axis of photon and electron beam have been analyzed for 10x10cm2 and 20x20cm2 field size in separate ways. Among the measurements, observed parameters lie under the tolerance limit as recommended by American Association of Physicists in Medicine viz. ±3%. The outcomes of the measurements are in the acceptable range for the treatment procedure of patients.

Downloads

Download data is not yet available.
Abstract
36
PDF
53

Downloads

Published

2023-08-04

How to Cite

Dhoju, N., Pudasainee, A., Jha, B., Yadav, P. K., Pokharel, A., Nyaichai, K., & Lamichhane , T. R. . (2023). Monitoring linear accelerator beam with daily quality assurance phantom. Scientific World, 16(16), 5–11. https://doi.org/10.3126/sw.v16i16.56743

Issue

Section

Research Article