发泡胶联合热塑膜在头颈部肿瘤放疗中的应用研究

Study on application of styrofoam combined with thermoplastic film in radiotherapy for head and neck tumor

目的探讨发泡胶联合热塑膜在头颈部肿瘤放疗中的应用效果。方法选取2019年1-12月该院收治的86例接受放疗的头颈部肿瘤患者为研究对象,按照固定模具方法分成观察组和对照组,每组43例。对照组采用颈部固定标准套枕加头颈肩板作为底座,观察组采用发泡胶泡沫垫加头颈肩板作为底座。TOMO机载MV级图像引导系统对摆位误差进行验证,比较两组患者头颈部上下、头脚、左右的摆位误差值情况。结果观察组患者上下、头脚、左右的摆位误差值均明显小于对照组,差异有统计学意义(P<0.05)。两组患者颈部摆位误差基本随放疗次数的增加而加大,观察组放疗过程中颈部上下、头脚、左右摆位误差均明显小于对照组,差异有统计学意义(P<0.05)。结论发泡胶联合热塑膜应用于头颈部肿瘤放疗中可明显提高摆位精度和重复性。

Objective To study the application effect of styrofoam combined with thermoplastic film in the radiotherapy for head and neck tumor.Methods Eighty-six patients with head and neck tumor receiving radiotherapy in this hospital from January to December 2019 were selected as the study subjects and divided into the observation group(n=43)and control group(n=43)according to the fixed mold method.The control group adopted the neck fixed standard pillow adding the head,neck and shoulder plates as the base,and the observation adopted the styrofoam pad adding the head,neck and shoulder plates as the base.The spiral tomotherapy radiotherapy system(TOMO)carrying MV class image guidance system was used to verify the positioning error,the positioning error values of the upper and lower head and neck,head and foot,and left and right were compared between the two groups.Results The positioning error values of upper and lower head and neck,head and foot,and left and right in the observation group were significantly smaller than those in the control group,and the difference was statistically significant(P<0.05).The positioning errors of the neck of the two groups were increased with the increase of radiotherapy time,the positioning errors of upper and lower neck,head and foot,and left and right in the observation group during radiotherapy were significantly smaller than those in the control group,and the difference was statistically significant(P<0.05).Conclusion The application of styrofoam and thermoplastic film in the radiotherapy of head and neck tumor can significantly improve the positioning accuracy and repetition.