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Evaluation of Lung Heterogeneity Effects on Dosimetric Parameters in Small Photon Fields Using Magic Polymer Gel, Gafchromic Film, and Monte Carlo Simulation Publisher Pubmed



Parwaie W1 ; Geraily G1 ; Shirazi A1 ; Yarahmadi M2 ; Shakeri A3 ; Ardekani MA4
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 Medical Physics, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
  3. 3. Valiasr Radiotherapy Oncology Center, Valiasr Hospital, Qom, Iran
  4. 4. Department of Radiology, Faculty of Para-Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran

Source: Applied Radiation and Isotopes Published:2020


Abstract

In this work, the performance of MAGIC polymer gel in measuring dosimetric parameters beyond lung heterogeneity in small fields was investigated. All data were obtained using MAGIC, EBT2, and MC in four small field sizes. The maximum local differences between MAGIC and MC were less than 5.1, 3.9, 3.1, and 2.6% for PDD values behind lung heterogeneity at 5, 10, 20, and 30 mm field sizes, respectively. The findings showed that MAGIC is a suitable tool for dosimetry behind low-density heterogeneity. © 2020 Elsevier Ltd