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- W3103814199 abstract "Abstract Although there is still no standard treatment for recurrent glioblastoma multiforme (rGBM), re-irradiation could be a therapeutic option. We retrospectively evaluated the efficacy and safety of re-irradiation using helical TomoTherapy (HT) with a simultaneous integrated boost (SIB) technique in patients with rGBM. 24 patients with rGBM underwent HT-SIB. A total dose of 20 Gy was prescribed to the Flair (fluid-attenuated inversion recovery) planning tumor volume (PTV) and 25 Gy to the PTV-boost (T1 MRI contrast enhanced area) in 5 daily fractions to the isodose of 67% (maximum dose within the PTV-boost was 37.5 Gy). Toxicity was evaluated by converting the 3D-dose distribution to the equivalent dose in 2 Gy fractions on a voxel-by-voxel basis. Median follow-up after re-irradiation was 27.8 months (range 1.6–88.5 months). Median progression-free survival (PFS) was 4 months (95% CI 2.0–7.9 months), while 6-month PFS was 41.7% (95% CI 22.2–60.1 months). Median overall survival following re-irradiation was 10.7 months (95% CI 7.4–16.1 months). There were no cases of re-operation due to early or late toxicity. Our preliminary results suggest that helical TomoTherapy with the proposed SIB technique is a safe and feasible treatment option for patients with rGBM, including those large disease volumes, reducing toxicity." @default.
- W3103814199 created "2020-11-23" @default.
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- W3103814199 date "2020-11-09" @default.
- W3103814199 modified "2023-10-14" @default.
- W3103814199 title "Re-irradiation of recurrent glioblastoma using helical TomoTherapy with simultaneous integrated boost: preliminary considerations of treatment efficacy" @default.
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- W3103814199 doi "https://doi.org/10.1038/s41598-020-75671-9" @default.
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