Σφακιανάκης Αλέξανδρος
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Κυριακή 27 Δεκεμβρίου 2015

Intensity-modulated proton therapy for nasopharyngeal carcinoma: Decreased radiation dose to normal structures and encouraging clinical outcomes.

Intensity-modulated proton therapy for nasopharyngeal carcinoma: Decreased radiation dose to normal structures and encouraging clinical outcomes.

Head Neck. 2015 Dec 26;

Authors: Lewis GD, Holliday EB, Kocak-Uzel E, Hernandez M, Garden AS, Rosenthal DI, Frank SJ

Abstract
BACKGROUND: Intensity-modulated proton therapy (IMPT) has the potential to spare dose to organs at risk (OAR) when compared to intensity-modulated radiotherapy (IMRT) while maintaining excellent clinical outcomes.
METHODS: Ten patients with nasopharyngeal carcinoma (NPC) were identified for whom IMPT was planned; 9 patients also had a comparison photon-based IMRT plan generated. Dosimetric comparison of mean radiation dose to 29 adjacent OAR was performed. Disease control, survival, and toxicity outcomes were collected from the medical records.
RESULTS: There were significant differences in mean doses in 15 of the 29 OAR; 13 OAR received lower mean dose with proton-based plans. Median follow-up was 24.5 months (range, 19-32 months). Two-year locoregional control was 100% and the 2-year overall survival was 88.9%.
CONCLUSION: We observed dosimetric advantages conferred by IMPT compared to IMRT. Further study is needed to determine if these translate into reduced toxicity and/or improved disease control. © 2015 Wiley Periodicals, Inc. Head Neck, 2015.

PMID: 26705956 [PubMed - as supplied by publisher]



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