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dc.contributor.authorImjai Chitapanaruxen_US
dc.contributor.authorWannapha Nobnopen_US
dc.contributor.authorPatumrat Sripanen_US
dc.contributor.authorAusareeya Chumachoteen_US
dc.contributor.authorEkkasit Tharavichitkulen_US
dc.contributor.authorSomvilai Chakrabandhuen_US
dc.contributor.authorPitchayaponne Klunklinen_US
dc.contributor.authorWimrak Onchanen_US
dc.contributor.authorBongkot Jia-Mahasapen_US
dc.contributor.authorSuwapim Janlaoren_US
dc.contributor.authorPatcharawadee Kayanen_US
dc.contributor.authorPatrinee Traisathiten_US
dc.contributor.authorDirk Van Gestelen_US
dc.description.abstract© 2017 Radiol Oncol. The aim of the study was to analyse of two-year loco-regional failure free survival (LRFFS), distant metastasis free survival (DMFS), overall survival (OS), and toxicity outcomes of the first 100 nasopharyngeal carcinoma patients in Thailand treated by helical tomotherapy. Between March 2012 and December 2015, 100 patients with non-metastatic nasopharyngeal carcinoma were treated by helical tomotherapy. All patients were treated by platinum-based concurrent chemoradiotherapy and adjuvant or neo-adjuvant chemotherapy. The median age was 51 years (interquartile ranges [IQR]: 42.5-57.0). The mean ± SD of D95% of planning target volume (PTV) 70, 59.4 and 54 were 70.2 ± 0.5, 59.8 ± 0.6, and 54.3 ± 0.8 Gy, respectively. The mean ± SD of conformity index, and homogeneity index were 0.89 ± 0.13 and 0.06 ± 0.07. Mean ± SD of D2 % of spinal cord and brainstem were 34.1 ± 4.4 and 53.3 ±6.3 Gy. Mean ± SD of D50 of contralateral and ipsilateral parotid gland were 28.4 ± 6.7 and 38.5 ± 11.2 Gy. At a median follow-up of 33 months (IQR: 25-41), the 2-year LRFFS, DMFS, OS were 94% (95%CI: 87-98%), 96% (95% CI: 89-98%), and 99% (95% CI: 93-100%), respectively. Acute grade 3 dermatitis, pharyngoesophagitis, and mucositis occurred in 5%, 51%, and 37%, respectively. Late pharyngoesophagitis grade 0 and 1 were found in 98% and 2% of patients. Late xerostomia grade 0, 1 and 2 were found in 17%, 78% and 5%, respectively. Helical tomotherapy offers good dosimetric performance and achieves excellent treatment outcome in nasopharyngeal carcinoma patients.en_US
dc.titleThe outcome of the first 100 nasopharyngeal cancer patients in Thailand treated by helical tomotherapyen_US
article.title.sourcetitleRadiology and Oncologyen_US
article.volume51en_US of Medicine, Thammasat Universityen_US Mai Universityen_US Jules Bordeten_US
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