Simple Automated Verification of Field Size Indicator for Quality Assurance of Medical Linear Accelerator

Authors

  • Siti Hanan  Department of Physics, Faculty of Sciences and Mathematics, Diponegoro University, Jl. Prof. Soedarto SH, Tembalang, Semarang 50275, Central Java, Indonesia
  • Choirul Anam  Department of Physics, Faculty of Sciences and Mathematics, Diponegoro University, Jl. Prof. Soedarto SH, Tembalang, Semarang 50275, Central Java, Indonesia
  • Eko Hidayanto  Department of Physics, Faculty of Sciences and Mathematics, Diponegoro University, Jl. Prof. Soedarto SH, Tembalang, Semarang 50275, Central Java, Indonesia

DOI:

https://doi.org/10.32628/IJSRST22922

Keywords:

Collimator, Field Size Indicator, Linear Accelerator, Quality Assurance, Radiotherapy

Abstract

Purpose: The purpose of this study is to automate the field size verification to facilitate mechanical check aspect medical linear accelerator (linac) quality assurance in a MATLAB-based algorithm on electronic portal imaging device (EPID) images. Methods: A total of 5 reference datasets (i.e. field sizes of 5 cm × 5 cm, 10 cm × 10 cm, 15 cm × 15 cm, 20 cm × 20 cm, and 25 cm × 25 cm) and 15 test datasets (i.e. reference field sizes plus 1 mm, 3 mm, and 5 mm increments) acquired by 6 MV Elekta Linac were used in this study. The proposed algorithm implemented a full automatic threshold with a value of 230 as a segmentation technique. The automated results were compared with manual results obtained using a ruler. Results: The automated results are comparable to manual results (i.e., the difference of both is within 2% or equal to 3 mm). The range of minimum to maximum difference between automated and manual was 0 - 3 mm and the maximum difference found in the 15.3 cm field size setting. Conclusions: We have successfully developed an automated procedure of field size verification and confirmed that the proposed algorithm provide a fast and accurate results.

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International Journal of Scientific Research in Science and Technology

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Published

2022-04-30

Issue

Volume 9, Issue 2, March-April-2022

Section

Research Articles

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How to Cite

[1]
Siti Hanan, Choirul Anam, Eko Hidayanto "Simple Automated Verification of Field Size Indicator for Quality Assurance of Medical Linear Accelerator" International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011,Volume 9, Issue 2, pp.55-60, March-April-2022. Available at doi : https://doi.org/10.32628/IJSRST22922