Development of light and radiation fields coincidence test toolkit for LINAC quality assurance

Se Hyung Lee, Bo Wi Cheon, Chul Hee Min, Chan Hyeong Kim, Seonghoon Kim, Min Cheol Han

Research output: Contribution to journalArticlepeer-review


The coincidence of light and radiation fields is an important quality assurance test for accurate beam delivery in a linear accelerator (LINAC), and is recommended to be checked monthly by the American Association of Physicists in Medicine (AAPM). The test-related conventional tools may yield different results, especially without a commercial software, depending on the user, even if the tolerance suggested by the AAPM is very tight. This study was conducted to develop a semiautomatic film analyzer, called FSChecker, for a simple, easy, and consistent quantitative evaluation of the LINAC light and radiation field coincidence, without commercial tools. The FSChecker has two components, a dedicated grid paper and an analyzing software based on MATLAB. Comparing the results obtained from the FSChecker with those of a commercial software revealed that the FSChecker could provide a reasonable and reliable analysis for the coincidence test of light and radiation fields in a LINAC with various scan parameters, including an office-level configuration.

Original languageEnglish
Pages (from-to)361-367
Number of pages7
JournalJournal of the Korean Physical Society
Issue number4
Publication statusPublished - 2022 Aug

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2021R1I1A1A01057995).

Publisher Copyright:
© 2022, The Korean Physical Society.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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