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Efficient EPID-based quality assurance of beam time delay for respiratory-gated radiotherapy with validation on Catalyst™ and AlignRT™ systems.

التفاصيل البيبلوغرافية
العنوان: Efficient EPID-based quality assurance of beam time delay for respiratory-gated radiotherapy with validation on Catalyst™ and AlignRT™ systems.
المؤلفون: Yao K; Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, China., Wang M; Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, China., Du Y; Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, China.; Institute of Medical Technology, Peking University Health Science Center, Beijing, China., Liu J; Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, China., Wang Q; Institute of Medical Technology, Peking University Health Science Center, Beijing, China., Wang R; Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, China., Wu H; Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, China.; Institute of Medical Technology, Peking University Health Science Center, Beijing, China., Yue H; Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, China.
المصدر: Journal of applied clinical medical physics [J Appl Clin Med Phys] 2024 Aug; Vol. 25 (8), pp. e14376. Date of Electronic Publication: 2024 May 02.
نوع المنشور: Journal Article; Validation Study
اللغة: English
بيانات الدورية: Publisher: Wiley on behalf of American Association of Physicists in Medicine Country of Publication: United States NLM ID: 101089176 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1526-9914 (Electronic) Linking ISSN: 15269914 NLM ISO Abbreviation: J Appl Clin Med Phys Subsets: MEDLINE
أسماء مطبوعة: Publication: 2017- : Malden, MA : Wiley on behalf of American Association of Physicists in Medicine
Original Publication: Reston, VA : American College of Medical Physics, c2000-
مواضيع طبية MeSH: Radiotherapy Dosage* , Phantoms, Imaging* , Radiotherapy Planning, Computer-Assisted*/methods , Radiotherapy, Intensity-Modulated*/methods , Quality Assurance, Health Care*/standards, Humans ; Particle Accelerators/instrumentation ; Respiration ; Respiratory-Gated Imaging Techniques/methods ; Neoplasms/radiotherapy ; Time Factors
مستخلص: Purpose: To propose a straightforward and time-efficient quality assurance (QA) approach of beam time delay for respiratory-gated radiotherapy and validate the proposed method on typical respiratory gating systems, Catalyst™ and AlignRT™.
Methods: The QA apparatus was composed of a motion platform and a Winston-Lutz cube phantom (WL3) embedded with metal balls. The apparatus was first scanned in CT-Sim and two types of QA plans specific for beam on and beam off time delay, respectively, were designed. Static reference images and motion testing images of the WL3 cube were acquired with EPID. By comparing the position differences of the embedded metal balls in the motion and reference images, beam time delays were determined. The proposed approach was validated on three linacs with either Catalyst™ or AlignRT™ respiratory gating systems. To investigate the impact of energy and dose rate on beam time delay, a range of QA plans with Eclipse (V15.7) were devised with varying energy and dose rates.
Results: For all energies, the beam on time delays in AlignRT™ V6.3.226, AlignRT™ V7.1.1, and Catalyst™ were 92.13 ± $ \pm $ 5.79 ms, 123.11 ± $ \pm $ 6.44 ms, and 303.44 ± $ \pm $ 4.28 ms, respectively. The beam off time delays in AlignRT™ V6.3.226, AlignRT™ V7.1.1, and Catalyst™ were 121.87 ± $ \pm $ 1.34 ms, 119.33 ± $ \pm $ 0.75 ms, and 97.69 ± $ \pm $ 2.02 ms, respectively. Furthermore, the beam on delays decreased slightly as dose rates increased for all gating systems, whereas the beam off delays remained unaffected.
Conclusions: The validation results demonstrate the proposed QA approach of beam time delay for respiratory-gated radiotherapy was both reproducible and time-efficient to practice for institutions to customize accordingly.
(© 2024 The Author(s). Journal of Applied Clinical Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine.)
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معلومات مُعتمدة: 12375335 National Natural Science Foundation of China; 12005007 National Natural Science Foundation of China; ZY202410 Science Foundation of Peking University Cancer Hospital; 320.6750.2022-3-59 Clinical Research Project of Wu Jieping Medical Foundation; 2019YFF01014405 National Key Research and Development Program of China; 2023YFF0613501 National Key Research and Development Program of China
فهرسة مساهمة: Keywords: dose rate; quality assurance; respiratory gating; respiratory‐gated radiotherapy; time delay
تواريخ الأحداث: Date Created: 20240502 Date Completed: 20240806 Latest Revision: 20240808
رمز التحديث: 20240808
مُعرف محوري في PubMed: PMC11302812
DOI: 10.1002/acm2.14376
PMID: 38695849
قاعدة البيانات: MEDLINE
الوصف
تدمد:1526-9914
DOI:10.1002/acm2.14376