End-to-end Verification of Automated SRS with HyperArc on the TrueBeam Platform
DOI:
https://doi.org/10.29384/rbfm.2023.v17.19849001742Keywords:
dose de radiação, exames radiológicos, planejamento radioterápico, radioterapia.Abstract
The Stereotatic radiosurgery (SRS) is an extremely complex treatment technique, as it involves several stages and consists of deliver high doses of radiation in a few applications. Among the steps involved are image acquisition procedures, image registration, definition of the target volume, treatment planning and dose calculation, patient positioning with the IGRT system, as well as the delivery of the treatment in the equipment. The end-to-end (E2E) test is the only one capable of providing us the combined uncertainty of the entire process involved in complex procedures, such as the SRS. This study involved simulating the entire treatment flow of a patient in an anthropomorphic simulator, and: (i) analyzing the acquisition of images and registration, in a qualitative and quantitative form, (ii) carrying out treatment planning in this simulator and (iii) verify the radiation dose delivery by the absolute dose measurement with an ionization chamber and analysis of the planar dose distribution with radiochromic film. The results of the quantitative analyzes through the TRE and DSC were considered satisfactory, according to the tolerances of TG-132. The results of measurements with an ionization chamber to determine the absolute point dose showed variations of less than 3% of the value calculated by TPS. The analysis of the planar dose distribution with radiochromic film showed that there is agreement between the dose profile calculated by the TPS and the measured, with an acceptance rate > 98% in the gamma criterion of 3%/1mm. The recommendation for the frequency of this test is at least annually, or after any repair or replacement of equipment with a potential impact on data integrity, and every update of image registration software or TPS.
Downloads
References
Benedict S. H., et al. Stereotactic body radiation therapy: the report of AAPM Task Group 101. Med. Phys.; v. 37(8), p.4078- 4101, 2010.
Halvorsen, P. H., Cirino E., Das I. J., et al. AAPM-RSS medical physics practice guideline 9.a. for SRS-SBRT. J. Applied Clinical Med. Phys., v. 18(5), p.10 – 21, 2017.
Otto K. Volumetric modulated arc therapy: IMRT in a single gantry arc. Med. Phys., v. 35, 2008.
Sharpe, M. B., IAEA Technical Reports Series No. 430: Commissioning and Quality Assurance of Computerized Planning Systems for Radiation Treatment of Cancer. Med. Phys., v. 33(2), p.561-561, 2006.
Grishchuk, D., et al. ISRS Technical Guidelines for Stereotactic Radiosurgery: Treatment of Small Brain Metastases (≤1 cm in Diameter). Prac. Rad. Onc., e1-e12, 2022.
Lim, S. B., et al. Comparative study of SRS end-to-end QA processes of a diode array device and an anthropomorphic phantom loaded with GafChromic XD film. J. Applied Clinical Med. Phys., v. 23(9), p.10 – 21, 2022.
American Association of Physicists in Medicine (AAPM). Radiation Therapy Committee Task Group 132: Use of image registration and fusion algorithms and techniques in radiotherapy. Med. Phys., v. 44(7), 2017.
Low, C., Toye W., Phung, P., Huston, C. Patient-Specific Quality Assurance Protocol for Volumetric Modulated Arc Therapy using Dose Volume Histogram. Journal Med. Phys., v.43(25), p.112 – 118, 2018.
Shaw E, Kline R, Gillin M, et al: Radiation Therapy Oncology Group: radiosurgery quality assurance guidelines. Int. J. Radiat. Oncol. Biol. Phys., v.27, p.1231–1239, 1993.
Paddick I. A simple scoring ratio to index the conformity of radiosurgical treatment plans. J. Neurosurg. V. 93(3), p. 219-222, 2000.
Desai, D. D., Johnson, E. L., Cordrey, I., L. An analytical expression for R50% dependent on PTV surface area and volume: A cranial SRS comparison. J. Applied Clinical Med. Phys., v. 22(2), p.203 – 210, 2021.
American Association of Physicists in Medicine (AAPM). Radiation Therapy Committee Task Group 119: Commissioning Tests Instructions for Planning, Measurement, and analysis. 2009.
Low, D. A., Harms, W. B., Mutic, S., Purdy, J.A. A technique for the quantitative evaluation of dose distributions. Med. Phys., v. 25, p.656–61, 1998.
Miften, M., Olch, A., Mihailidis, D., et al. Tolerance limits and methodologies for IMRT measurement-based verification QA: recommendations of AAPM Task Group 218. Med. Phys., v.45 (4), e53- e83, 2018.
Furnari, L. e Colaboradores. Controle da qualidade em radioterapia. 2ª Ed. São Paulo, Brasil (2021).
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Matheus Fernando Santos, Lucas Delbem Albino, Karen Pieri Bueno, Ueslen Santos da Silva, Jose Geneci da Costa Calado, Roberta Silva Oliveira, Jessica Luana Oliveira Barbosa, Luccas Moreira Alves, Ernesto Henrique Roesler
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
The submission of original articles to the Brazilian Journal of Medical Physics implies the transfer, by the authors, of the rights of print and digital publication. Copyright for published articles remains with the author, with journal rights on first publication. Authors may only use the same results in other publications by clearly indicating this journal as the original publisher. As we are an open access journal, free use of articles in educational, scientific, non-commercial applications is allowed, as long as the source is cited.
The Brazilian Journal of Medical Physics is under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
