دورية أكاديمية
Evaluation of the water-equivalent characteristics of the SP34 plastic phantom for film dosimetry in a clinical linear accelerator.
| العنوان: | Evaluation of the water-equivalent characteristics of the SP34 plastic phantom for film dosimetry in a clinical linear accelerator. |
|---|---|
| المؤلفون: | Kim KT; Neuroscience Research Institute, Seoul National University Medical Research Center, Seoul, Korea.; Research and Development team, Radexel Inc., Seoul, Korea., Choi Y; Department of Accelerator Science, Korea University Sejong Campus, Sejong, Korea., Cho GS; Research Team of Radiological Physics & Engineering, Korea Institute of Radiological & Medical Sciences, Seoul, Korea., Jang WI; Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea., Yang KM; Department of Radiation Oncology, Korea Institute of Radiological & Medical Sciences, Seoul, Korea., Lee SS; Research Team of Radiological Physics & Engineering, Korea Institute of Radiological & Medical Sciences, Seoul, Korea., Bahng J; Research and Development team, Radexel Inc., Seoul, Korea.; Department of Radiation Oncology, Kangwon National University hospital, Chun-cheon, Korea. |
| المصدر: | PloS one [PLoS One] 2023 Oct 23; Vol. 18 (10), pp. e0293191. Date of Electronic Publication: 2023 Oct 23 (Print Publication: 2023). |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: San Francisco, CA : Public Library of Science |
| مواضيع طبية MeSH: | Polystyrenes* , Film Dosimetry*/methods, Particle Accelerators ; Radiotherapy, High-Energy/methods ; Phantoms, Imaging ; Water ; Radiometry/methods |
| مستخلص: | In this study, some confusing points about electron film dosimetry using white polystyrene suggested by international protocols were verified using a clinical linear accelerator (LINAC). According to international protocol recommendations, ionometric measurements and film dosimetry were performed on an SP34 slab phantom at various electron energies. Scaling factor analysis using ionometric measurements yielded a depth scaling factor of 0.923 and a fluence scaling factor of 1.019 at an electron beam energy of <10 MeV (i.e., R50 < 4.0 g/cm2). It was confirmed that the water-equivalent characteristics were similar because they have values similar to white polystyrene (i.e., depth scaling factor of 0.922 and fluence scaling factor of 1.019) presented in international protocols. Furthermore, percentage depth dose (PDD) curve analysis using film dosimetry showed that when the density thickness of the SP34 slab phantom was assumed to be water-equivalent, it was found to be most similar to the PDD curve measured using an ionization chamber in water as a reference medium. Therefore, we proved that the international protocol recommendation that no correction for measured depth dose is required means that no scaling factor correction for the plastic phantom is necessary. This study confirmed two confusing points that could occur while determining beam characteristics using electron film dosimetry, and it is expected to be used as basic data for future research on clinical LINACs. Competing Interests: The authors have declared that no competing interests exist. (Copyright: © 2023 Kim et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.) |
| References: | Phys Med. 2019 Feb;58:81-89. (PMID: 30824155) Med Phys. 2019 Sep;46(9):4246-4256. (PMID: 31297824) Med Phys. 2022 Jul;49(7):4875-4911. (PMID: 35403262) Sci Transl Med. 2014 Jul 16;6(245):245ra93. (PMID: 25031268) Phys Med. 2019 Apr;60:50-57. (PMID: 31000086) Med Phys. 2018 Feb;45(2):863-874. (PMID: 29206287) Med Phys. 1999 Sep;26(9):1847-70. (PMID: 10505874) Int J Radiat Oncol Biol Phys. 2021 Jul 1;110(3):872-882. (PMID: 33444695) Ann N Y Acad Sci. 1969 Jul 3;161(1):33-43. (PMID: 4979829) J Synchrotron Radiat. 2017 Jul 01;24(Pt 4):866-876. (PMID: 28664894) Clin Cancer Res. 2019 Jan 1;25(1):35-42. (PMID: 29875213) Med Phys. 1995 Dec;22(12):2097-100. (PMID: 8746716) J Med Phys. 2014 Jan;39(1):44-9. (PMID: 24600172) Int J Radiat Oncol Biol Phys. 2017 Jan 1;97(1):195-203. (PMID: 27816362) Med Phys. 1991 Jan-Feb;18(1):73-109. (PMID: 1901132) Radiother Oncol. 2019 Oct;139:18-22. (PMID: 31303340) Radiother Oncol. 2017 Sep;124(3):365-369. (PMID: 28545957) Radiother Oncol. 2019 Oct;139:40-45. (PMID: 30755324) Radiother Oncol. 2019 Oct;139:46-50. (PMID: 31266652) Phys Med. 2011 Apr;27(2):81-8. (PMID: 20627785) Radiother Oncol. 2019 Oct;139:4-10. (PMID: 31253467) |
| المشرفين على المادة: | 0 (Polystyrenes) 059QF0KO0R (Water) |
| تواريخ الأحداث: | Date Created: 20231023 Date Completed: 20231026 Latest Revision: 20231112 |
| رمز التحديث: | 20240628 |
| مُعرف محوري في PubMed: | PMC10593237 |
| DOI: | 10.1371/journal.pone.0293191 |
| PMID: | 37871021 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder كن أول من يترك تعليقا!