دورية أكاديمية
أعرض في EDS

Dose area product primary standards established by graphite calorimetry at the LNE-LNHB for small radiation fields in radiotherapy.

التفاصيل البيبلوغرافية
العنوان: Dose area product primary standards established by graphite calorimetry at the LNE-LNHB for small radiation fields in radiotherapy.
المؤلفون: Jurczak J; Université Paris-Saclay, CEA, List, Laboratoire National Henri Becquerel (LNE-LNHB), F-91120 Palaiseau, France. Electronic address: julien.jurczak@outlook.com., Rapp B; Université Paris-Saclay, CEA, List, Laboratoire National Henri Becquerel (LNE-LNHB), F-91120 Palaiseau, France. Electronic address: benjamin.rapp@cea.fr., Delaunay F; Université Paris-Saclay, CEA, List, Laboratoire National Henri Becquerel (LNE-LNHB), F-91120 Palaiseau, France. Electronic address: franck.delaunay@cea.fr., Gouriou J; Université Paris-Saclay, CEA, List, Laboratoire National Henri Becquerel (LNE-LNHB), F-91120 Palaiseau, France. Electronic address: jean.gouriou@cea.fr., Dufreneix S; Université Paris-Saclay, CEA, List, Laboratoire National Henri Becquerel (LNE-LNHB), F-91120 Palaiseau, France; Institut de Cancérologie de l'Ouest, Angers, France. Electronic address: Stephane.Dufreneix@ico.unicancer.fr., Bordy JM; Université Paris-Saclay, CEA, List, Laboratoire National Henri Becquerel (LNE-LNHB), F-91120 Palaiseau, France. Electronic address: jean-marc.bordy@cea.fr.
المصدر: Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB) [Phys Med] 2022 Jun; Vol. 98, pp. 18-27. Date of Electronic Publication: 2022 Apr 27.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Istituti Editoriali e Poligrafici Internazionali Country of Publication: Italy NLM ID: 9302888 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1724-191X (Electronic) Linking ISSN: 11201797 NLM ISO Abbreviation: Phys Med Subsets: MEDLINE
أسماء مطبوعة: Publication: Pisa : Istituti Editoriali e Poligrafici Internazionali
Original Publication: Lugano, Switzerland : Giardini editori S.A.,
مواضيع طبية MeSH: Graphite*, Calorimetry/methods ; Monte Carlo Method ; Particle Accelerators ; Photons/therapeutic use ; Radiometry/methods
مستخلص: Purpose: To present primary standards establishment in terms of Dose Area Product (DAP) for small field sizes.
Methods: A large section graphite calorimeter and two plane-parallel ionization chambers were designed and built in-house. These chambers were calibrated in a 6MV FFF beam at the maximum dose rate of 1400 UM/min for fields defined by specifically designed circular collimators of 5, 7.5, 10, 13 and 15 mm diameter and jaws of 5, 7, 10, 13 and 15 mm side length on a Varian TrueBeam linac.
Results: The two chambers show the same behaviour regardless of field shape and size. From 5 to 15 mm, calibration coefficients slightly increase with the field size with a magnitude of 1.8% and 1.1% respectively for the two chambers, and are independent of the field shape. This tendency was confirmed by Monte Carlo calculations. The average associated uncertainty of the calibration coefficients is around 0.6% at k=1.
Conclusions: For the first time, primary standards in terms of DAP were established by graphite calorimetry for an extended range of small field sizes. These promising results open the door for an alternative approach in small fields dosimetry.
(Copyright © 2022 Associazione Italiana di Fisica Medica e Sanitaria. Published by Elsevier Ltd. All rights reserved.)
فهرسة مساهمة: Keywords: Calorimetry; Dose area product; Monte Carlo; Small fields
المشرفين على المادة: 7782-42-5 (Graphite)
تواريخ الأحداث: Date Created: 20220430 Date Completed: 20220526 Latest Revision: 20220526
رمز التحديث: 20221213
DOI: 10.1016/j.ejmp.2022.03.013
PMID: 35489128
قاعدة البيانات: MEDLINE
الوصف
تدمد:1724-191X
DOI:10.1016/j.ejmp.2022.03.013