Comparison of Intrafractional Motion in Head and Neck Cancer Between Two Immobilization Methods During Stereotactic Ablative Radiation Therapy by CyberKnife.
Chen-Lin KangTsair-Fwu LeeShan-Ho ChanShyh-Chang LiuJui-Chu WangCheng-Hsiang TsaiKuan-Cho LiaoFu-Min FangLiyun ChangChun Chieh HuangPublished in: Cancer management and research (2021)
The immobilization method of thermoplastic mask and head rest with vacuum bag did not provide better immobilization than that without vacuum bag in most axes. The clinical use of 2 mm as a margin of PTV to cover 95% intrafractional motion was adequate in Group A but not in Group B.