Influences of two head holders on setup errors during head and neck neoplasms radiotherapy
10.7687/J.ISSN1003-8868.2017.03.080
- VernacularTitle:2种不同固定头架在头颈部肿瘤放疗中的摆位误差研究
- Author:
Yan HU
;
Lianghe WANG
;
Xingmeng CHEN
;
Ya ZOU
;
Jingguo FU
- Keywords:
CBCT;
head and neck neoplasm;
radiotherapy;
head and neck positioning board;
setup error
- From:
Chinese Medical Equipment Journal
2017;38(3):80-82,93
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the effects of two head holders on the setup errors during head and neck neoplasms radiotherapy.Methods Totally 30 patients were divided into groups A and B randomly and equally.Group A applied TypeSTM Extension for setup,and group B used Type-S Overlay Board,with thermoplastic film applied to fixation.Varian23IX image guided linear accelerator was involved in the therapy,and the patients underwent CBCT-guided therapy once a week in 6 weeks.The setup errors at left-right,head-foot and anterior-posterior directions were obtained by bone registration and manual checking.Results The absolute setup error at anterior-posterior direction of group A,was (2.31 ± 1.35) mm,which was significantly higher than (1.88±1.79) mm of group B (P=0.032).There were no obvious differences between the setup errors of group A and those of group B (P＞0.05),and the weekly absolute errors of group A were not statistically different from those of group B (P＞0.05).Conclusion There are no significant differences between the effects of the two head holders on the setup errors during head and neck neoplasms radiotherapy,and proper head holder can be selected according to clinical requirements.
