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An Investigation Into the Surface Dose Using Eclipse Treatment Planning System and Film Dosimetry for Treatment of Breast Cancer Publisher



Sheykholeslami N1 ; Parwaie W2 ; Farzin M3 ; Vaezzadeh V4 ; Esfahani M4 ; Geraily G1, 4
Authors
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Authors Affiliations
  1. 1. Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Laboratory Sciences, School of Allied Medical Sciences, Ilam University of Medical sciences, Ilam, Iran
  3. 3. Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Radiation Oncology Research Center, Cancer Institute, Tehran University of Medical Sciences, Tehran, Iran

Source: Frontiers in Biomedical Technologies Published:2023


Abstract

Purpose: Accurate knowledge about surface dose distribution is a critical issue in skin irradiation. This study was conducted to investigate the surface dose using the Eclipse Treatment Planning System (TPS) calculation and GAF chromic film measurement for breast cancer treatment. Materials and Methods: An inhomogeneous chest phantom was used in the present study. Irradiations were done with a 6 MV energy beam of a linear accelerator (Varian 2100C/D). TPS calculations and film measurements were compared for surface dose estimations. Results: The average difference between film measurements and TPS calculations was 7.1%. Surface doses were lower in TPS calculations in comparison with film measurements. Conclusion: TPS plays a significant role in radiotherapy. However, they have many errors in measuring surface doses. Because of the inaccuracy of the majority of treatment planning systems in calculating the surface dose, the need for practical measurements is essential. Copyright © 2023 Tehran University of Medical Sciences.
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Ghazaleh Geraily (5)
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