Image-guided adaptive radiotherapy improves acute toxicity during intensity-modulated radiation therapy for head and neck cancer

Journal of Radiation Oncology - Tập 7 - Trang 139-145 - 2017
Allen M. Chen1,2, Taeko Yoshizaki1, Sophia Hsu1, Argin Mikaeilian1, Minsong Cao1
1Department of Radiation Oncology, University of California, Los Angeles-David Geffen School of Medicine, Los Angeles, USA
2Department of Radiation Oncology, University of Kansas School of Medicine, Kansas City, USA

Tóm tắt

The purpose of this study was to evaluate the impact of an image-guided adaptive re-planning strategy on patients treated by intensity-modulated radiotherapy (IMRT) for head and neck cancer. Among 198 patients with head and neck cancer comprising the primary study population, 79 (40%) underwent adaptive radiotherapy with modification of the original IMRT midway during treatment. The incidence of grade 3+ acute skin toxicity was 15 and 35% among patients treated with and without adaptive radiotherapy, respectively (p = 0.01). The incidence of grade 3+ oral mucositis was 15 and 29%, respectively (p = 0.03). There was no significant difference in the 2-year rates of local-regional control or overall survival between the two cohorts (p > 0.05, for both). The use of an image-guided adaptive radiotherapy strategy reduced the incidence of high-grade skin toxicity and oral mucositis in the acute setting. Further studies are needed to better define which subset of patients may benefit the most.

Tài liệu tham khảo

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