Comparison of gamma analysis in multiple static segment and sliding window techniques in nasopharyngeal radiotherapy

Basit Öğe Kaydı
dc.contributor.authorInan G.
dc.contributor.authorGül V.
dc.contributor.authorYavaş G.
dc.contributor.authorYavaş Ç.
dc.contributor.authorO?ul R.
dc.date.accessioned2020-03-26T20:19:50Z
dc.date.available2020-03-26T20:19:50Z
dc.date.issued2019
dc.departmentSelçuk Üniversitesien_US
dc.descriptionTurkish Physical Society 35th International Physics Congress, TPS 2019 -- 4 September 2019 through 8 September 2019 -- 155472en_US
dc.description.abstractThe purpose of this study was to compare gamma an alysis by using portal dosimetry (PD) between static (SMLC) and dynamic (DMLC) intensity modulated radiation therapy (IMRT) techniques. Simultane Integrated Boost (SIB) treatment plans were created using four treatment volumes (PTV-54, PTV-59.4, PTV-66, PTV-70) for 10 patients with nasopharyngeal car cinoma. The treatment plans were performed using Varian DHX eclipse treatment planning system (TPS) version 15.1. Six out of ten patients treatment plans were planned with 7 fields IMRT technique using the ganrty angels of 0°, 52°, 104°, 156°, 204°, 256° and 308°. The remaining four patients treatment plans were planned using 9 fields IMRT technique with the gantry angles 0°, 40°, 80°, 120°,160°, 200°, 240°, 280° and 320°. A total dose 6996 cGy in 33 fractions were given and the dose calculation were performed using SW and MMS technique. The plans were measured by aS500 EPID integrated into Varian DHX linear accelerator. Dose distributions images were obtained. Gamma analyses were evaluated using different ? criteria (2%/2 mm, 3%/3 mm and 4%/4 mm) for the 6 MV photon beams. Gamma analysis was performed by using Portal Dosimetry software in 2, 3, 4 mm distance to agreement and 2%, 3% and 4% dose difference criteria and their algorithms were compared. When compared the calculated and measured dose distributions images of the gamma analyses the average result for SW technique in 7 fields for gamma criteria 2/2%, 3/3% 4/4% were 98.64±0.34 99.36±0.22 99.74±0.11 and 9 fields for the gamma criteria 2/2%, 3/3% 4/4% were 96,90±0.70 98,98±0,33 99,60±0,31 respectively. The average result for MMS technique in 7 fields for the gamma criteria 2/2%, 3/3% 4/4 were 97.46±0.22 98.92±0.39 99.42±0.18 and 9 fields for the gamma criteria 2/2%, 3/3% 4/4% were 94.94±1.13, 97.74±0.33, 98.82±0.24 respectively. SW and MMS techniques showed comparable results with the respect to gamma analysis so but both techniques are suitable for the gamma analysis criteria. © 2019 Author(s).en_US
dc.identifier.doi10.1063/1.5135454en_US
dc.identifier.isbn9.78074E+12
dc.identifier.issn0094243Xen_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://dx.doi.org/10.1063/1.5135454
dc.identifier.urihttps://hdl.handle.net/20.500.12395/38419
dc.identifier.volume2178en_US
dc.identifier.wosWOS:000618879700057en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmerican Institute of Physics Inc.en_US
dc.relation.ispartofAIP Conference Proceedingsen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleComparison of gamma analysis in multiple static segment and sliding window techniques in nasopharyngeal radiotherapyen_US
dc.typeConference Objecten_US

Dosyalar

Koleksiyon

Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu