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Publication

Publication

Usefulness of Semi-cylindrical Beam Spoiler in Treatment of Early Glottic Cancer Using 6 MV Photon Beam
Journal
In Vivo
Vol
36(1)
Page
465-472
Author
Seong Soo Shin, Sohyun Ahn, Seung-Hyup Baek, Jungwon Kwak, Jin Sung Kim, Woo Sang Ahn
Year
Miscellaneous
Date
Jan-Feb 2022
File
In vivo_jan 36_SHA.pdf (3.3M) 5회 다운로드 DATE : 2022-01-10 15:55:34
Background/aim: To assess the dosimetric influence of a semi-cylindrical beam spoiler (sCBS) for the treatment of early glottic cancer using a 6 MV photon beam.

Patients and methods: The 2D dose distributions were also calculated and measured with and without the sCBS and with a 0.5 cm thick bolus. A retrospective study of 8 patients treated between 2012 and 2018 was performed.

Results: The 2D dose distributions obtained from the treatment planning system (TPS) and film measurements were in good agreement. In the planning study, the V95%, V100%, conformal index (CI), and homogeneity index (HI) of all pPTVs for the sCBS plans were better than those for the open field plans (p<0.01). Especially, sCBS plans had better skin sparing effect than bolus plans (p<0.05).

Conclusion: The sCBS of the 6 MV photon beam could be a useful tool for the treatment of early glottic cancers.