The impact of the field width on VMAT plan quality and the assessment of half field method

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dc.authoridUgurlu, Berat Tugrul/0000-0001-9521-1609
dc.authorwosidtemelli, Oztun/ABE-6986-2020
dc.contributor.authorUgurlu, Berat Tugrul
dc.contributor.authorTemelli, Oztun
dc.date.accessioned2024-08-04T20:47:09Z
dc.date.available2024-08-04T20:47:09Z
dc.date.issued2020
dc.departmentİnönü Üniversitesien_US
dc.description.abstractPurpose The goal of this work is to investigate the field width dependence of the volumetric modulated arc therapy (VMAT) plan quality and to propose a half field method to irradiate large volumes effectively with VMAT. Materials and methods We compared four different VMAT methods; namely three full field (3ff), four full field (4ff), three half field (3hf), four half field (4hf). To evaluate the impact of the field width on VMAT plan quality, 12 different size PTVs were created in the virtual phantom and treatment plans generated for each PTV were compared. The effectiveness of our half field method was tested using computed tomography (CT) data of 10 nasopharyngeal carcinoma patients. Results In the virtual phantom study, organs at risk (OAR) mean dose, the maximum point dose, and Homogeneity Index (HI) were found to be field width dependent. Conformation Number (CN) was not significantly affected. In the clinical study, 4hf plans obtained statistically significant dose reduction at brainstem (P < 0.001), right parotid (P = 0.034), oral cavity (P < 0.001), larynx (P = 0.003), cochlea (P = 0.017), lips (P = 0.024), and Body-PTV (P = 0.04) compared to 4ff plans. Conclusion Our results indicate that VMAT plan quality is dependent on the field width. Half field VMAT method, with the help of reduced field width, shows a clear advantage for the irradiation of large size targets compared to traditionally used full field VMAT plans.en_US
dc.identifier.doi10.1002/acm2.12834
dc.identifier.endpage122en_US
dc.identifier.issn1526-9914
dc.identifier.issue3en_US
dc.identifier.pmid32077576en_US
dc.identifier.scopus2-s2.0-85079777745en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage115en_US
dc.identifier.urihttps://doi.org/10.1002/acm2.12834
dc.identifier.urihttps://hdl.handle.net/11616/99194
dc.identifier.volume21en_US
dc.identifier.wosWOS:000514466000001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofJournal of Applied Clinical Medical Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectVMATen_US
dc.subjectfield widthen_US
dc.subjecthalf fielden_US
dc.subjectvirtual phantomen_US
dc.subjectnasopharyngeal carcinomaen_US
dc.titleThe impact of the field width on VMAT plan quality and the assessment of half field methoden_US
dc.typeArticleen_US

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