Effects of two different position fixing methods on position deviations of different directions and lesions in pa-tients with lung cancer receiving radiotherapy

VernacularTitle:两种体位固定方式对肺癌放疗中摆位误差的影响
Author: Ruqin WANG ; Zhendong GAO ; Guochao SUN
Publication Type:Journal Article
Keywords: Lung neoplasms; Radiotherapy; Posture; External fixators
From: Chinese Journal of Primary Medicine and Pharmacy 2014;(17):2617-2618
CountryChina
Language:Chinese
Abstract: Objective To explore the effect of two different position fixing methods on position deviation of different directions and lesions in patients with lung cancer receiving radiotherapy .Methods 100 cases were randomly selected and divided into the two groups .Group A included 50 cases using thermoplastic membrane and group B included 50 cases using vacuum cushion .Position deviations of different directions and lesions of the two groups were observed and compared .Results The forward and backward directions′position deviation of group A was significantly lower than that of group B(t=3.67,P=0.00).The total position deviation of group A was significantly lower than that of group B(t=2.83,P=0.00).The position deviation in the middle of lung field of group A was significantly lower than group B(t =4.26,P=0.00).The repositioning cases of group A accounted for 30.00%(15/50)and group B accounted for 56.00%(28/50).The difference was significant (χ2 =6.90,P=0.00).Conclusion Using thermoplastic membrane as position fixing method in patients with lung cancer receiving radiotherapy can reduce position deviation .