Comparison of two patient-specific VMAT QA systems: Portal Dosimetry versus ArcCHECK phantom
Keywords:
ArcCHECK, Patient-specific QA, VMATAbstract
Background: Due to the complexity of the VMAT dose distribution, the implementation of pre-treatment verification is an essential process in clinical practice to ensure that the accuracy radiation dose is delivered to the patient as planned.
Objective: To compare the VMAT pre-treatment QA results for head and neck cancer and prostate cancer using Portal Dosimetry system (PDs) and ArcCHECK phantom with difference gamma evaluation criteria.
Materials and Methods: The 30 VMAT plans of head and neck site and prostate site were created for verification plans on two different QA systems; PDs and ArcCHECK. Thirty plans each with 3 arcs were delivered on the EPIDs of the Varian Clinac iX and on ArcCHECK phantom. The measured planar dose matrices were compared with planned dose and were analyzed using global gamma evaluation with the criteria of 3%/3mm, 3%/2mm and 2% /2mm.
Results: The average passing rate of head and neck cases measured by PDs and ArcCHECK using 3%/3mm was 97.91±0.93% and 97.81±0.81%, respectively. When using 3%/2mm and 2%/2mm, the average passing rate measured by PDs was 95.65±0.83% and 76.48±2.55%, while the results measured by ArcCHECK was 96.63±0.77% and 79.77±2.11%, respectively. Similar trend of the results was observed for prostate cases; however, the higher passing rate was detected due to lesser complexity in prostate plan. The average passing rate measured by PDs and ArcCHECK using 3%/3mm was 99.10±0.86% and 99.56±0.47%, respectively. When using 3%/2mm, the passing rate of 98.11±1.02% and 98.67±0.90% was observed for PDs and ArcCHECK, respectively. The passing rate decreased to 97.05±0.82% for PDs and 97.46±0.68% for ArcCHECK when 2%/2mm was applied.
Conclusion: The gamma passing rates of PDs are comparable to those of the ArcCHECK measurements for all gamma criteria. There distinctive differences are observed when the stringent gamma criteria are applied.
References
Dursun P, Taşkın ZC, Altınel K. The determination of optimal treatment plans for Volumetric Modulated Arc Therapy (VMAT). Eur J Oper Res. 2019;272:372–88.
Mijnheer B, Jomehzadeh A, González P, Olaciregui-Ruiz I, Rozendaal R, Shokrani P, et al. Error detection during VMAT delivery using EPID-based 3D transit dosimetry. Phys Medica. 2018;54:137–45.
Sudloy N, E.haravichitkul SW. Dosimetry Characteristics and Gamma Passing Rate of ArcCHECK for Volumetric Modulated Arc Therapy Treatment Planning Verification. J Thai Assoc Radiat Oncol. 2019;25:43–57.
Khaophong J, Yongvithisatid P, Pairat K, Dechsupa P, Tangboonduangjit P, Asavaphatiboon S. Evaluation of Delta 4 system in patient specific QA for VMAT technique: Retrospective lung VMAT cases. J Phys Conf Ser. 2019;1248.
Urso P, Lorusso R, Marzoli L, Corletto D, Imperiale P, Pepe A, et al. Practical application of Octavius®-4D: Characteristics and criticalities for IMRT and VMAT verification. J Appl Clin Med Phys. 2018;19:517–24.
Maraghechi B, Davis J, Badu S, Fleck A, Darko J, Osei E. Retrospective analysis of portal dosimetry pre-treatment quality assurance of prostate volumetric-modulated arc therapy (VMAT) plans. J Radiother Pract. 2018;17:44–52.
Miften M, Olch A, Mihailidis D, Moran J, Pawlicki T, Molineu A, et al. Tolerance limits and methodologies for IMRT measurement-based verification QA: Recommendations of AAPM Task Group No. 218. Med Phys. 2018;45:e53–83.
Li G, Zhang Y, Jiang X, Bai S, Peng G, Wu K, et al. Evaluation of the ArcCHECK QA system for IMRT and VMAT verification. Phys Medica. 2013;29:295–303.
Chaswal V, Weldon M, Gupta N, Chakravarti A, Rong Y. Commissioning and comprehensive evaluation of the ArcCHECK cylindrical diode array for VMAT pretreatment delivery QA. J Appl Clin Med Phys. 2014;15:212–25.
Bailey DW, Kumaraswamy L, Bakhtiari M, Malhotra HK, Podgorsak MB. EPID dosimetry for pretreatment quality assurance with two commercial systems. J Appl Clin Med Phys. 2012;13:82–99.
Ezzell GA, Burmeister JW, Dogan N, LoSasso TJ, Mechalakos JG, Mihailidis D, et al. IMRT commissioning: multiple institution planning and dosimetry comparisons, a report from AAPM Task Group 119. Med Phys. 2009;36:5359–73.
Hussein M, Rowshanfarzad P, Ebert MA, Nisbet A, Clark CH. A comparison of the gamma index analysis in various commercial IMRT/VMAT QA systems. Radiother Oncol. 2013;109:370–6.
Vieillevigne L, Molinier J, Brun T, Ferrand R. Gamma index comparison of three VMAT QA systems and evaluation of their sensitivity to delivery errors. Phys Medica. 2015;31:720–5.
Van Esch A, Depuydt T HD. The use of an aSi-based EPID for routine absolute dosimetric pre-treatment verification of dynamic IMRT fields. Radiother Oncol. 2004;:223–34.
Klein EE, Hanley J, Bayouth J, Yin F, Simon W, Dresser S, et al. Task Group 142 report: quality assurance of medical accelerators. Med Phys. 2009;36:4197–212.
Corporation SN. ArcCHECK [Internet]. Sun Nuclear corporation. 2012 [cited 2020 Dec 25]. Available from: https://www.sunnuclear.com/products/arccheck
Low DA, Harms WB, Mutic S, Purdy JA. A technique for the quantitative evaluation of dose distributions. Med Phys. 1998;25:656–61.
Yu L, Tang TLS, Cassim N, Livingstone A, Cassidy D, Kairn T, et al. Analysis of dose comparison techniques for patient-specific quality assurance in radiation therapy. J Appl Clin Med Phys. 2019;20:189–98.
Low DA. Gamma dose distribution evaluation tool. J Phys Conf Ser. 2010;250:349–59.
Heilemann G, Poppe B, Laub W. On the sensitivity of common gamma-index evaluation methods to MLC misalignments in Rapidarc quality assurance. Med Phys. 2013;40:1–12.
Huang YC, Yeh CY, Yeh JH, Lo CJ, Tsai PF, Hung CH, et al. Clinical practice and evaluation of electronic portal imaging device for VMAT quality assurance. Med Dosim. 2013;38:35–41.
Mohamed IE, Ibrahim AG, Zidan HM, El-Bahkiry HS, El-sahragti AY. Physical dosimetry of volumetric modulated arc therapy (VMAT) using EPID and 2D array for quality assurance. Egypt J Radiol Nucl Med. 2018;49:477–84.
Woon W, Ravindran PB, Ekanayake P, Vikraman S, Lim YYF, Khalid J. A study on the effect of detector resolution on gamma index passing rate for VMAT and IMRT QA. J Appl Clin Med Phys. 2018;19:230–48.
Li G, Zhang Y, Jiang X, Bai S, Peng G, Wu K, et al. Evaluation of the ArcCHECK QA system for IMRT and VMAT verification. Phys medica. 2013;29:295–303.
Thiyagarajan R, Nambiraj A, Sinha SN, Yadav G, Kumar A, Subramani V, et al. Analyzing the performance of ArcCHECK diode array detector for VMAT plan. Reports Pract Oncol Radiother. 2016;21:50–6.
Ahmed S, Nelms B, Kozelka J, Zhang G, Moros E, Feygelman V. Validation of an improved helical diode array and dose reconstruction software using TG-244 datasets and stringent dose comparison criteria. J Appl Clin Med Phys. 2016;17:163–78.
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