不同体位在头颈部肿瘤三维适形放疗中的效果分析  

Effects of different postures on three dimensional conformal therapy for head and neck tumors

作　　者：王宏卫[1] Wang Hongwei(Department of Radiotherapy, Tumor Hospital of Shanxi Province, Taiyuan , Shanxi 030013, China)

机构地区：[1]山西省肿瘤医院放疗科,山西省太原030013

出　　处：《中国基层医药》2017年第12期1835-1838,共4页Chinese Journal of Primary Medicine and Pharmacy

摘　　要：目的 探讨不同体位在头颈部肿瘤三维适形放疗中的效果.方法 选择40例头颈部肿瘤患者为研究对象,采用随机数字表法分为观察组20例、对照组20例,观察组采用头颈肩膜体位固定,对照组采用头膜体位固定,每例患者放疗体位摆位10次,比较两种不同体位固定的摆放误差.结果 两组在X方向的误差差异无统计学意义（P〉0.05）;观察组Y方向误差为（0.12±0.12）mm,Z方向误差为（0.10±0.11）mm,与对照组Y方向的（0.23±0.19）mm、Z方向的（0.19±0.15）mm相比,误差明显更小,差异均有统计学意义（t=2.189、2.163,均P〈0.05）.摆位重复性,观察组Y轴误差≥2 mm的有14次,误差率为7%,对照组Y轴误差≥2 mm的有40次,误差率为20%,观察组明显比对照组的误差更小,差异有统计学意义（x2=29.286、7.236,均P〈0.05）;观察组Z轴误差≥2 mm的有12次,误差率为6%,对照组Z轴误差≥2 mm的有34次,误差率为17%,观察组明显比对照组的误差更小,差异有统计学意义（x2=29.286、5.944,均P〈0.05）.结论 在头颈部肿瘤患者三维适形放疗中,采用头颈肩膜体位固定的摆位精确度和重复性更好,临床价值较高,值得推广应用.Objective To investigate the effect of different postures in three dimensional conformal therapy for head and neck tumors.Methods 40 patients with head and neck cancer were selected as the research subjects.All patients were randomly divided into observation group and control group,20 cases in each group.The observation group for neck shoulder film fixed position,the control group was the first film fixed position each patient,radiotherapy 10 times.The display error condition of different position fixing of the two groups was compared.Results There was no significant difference in the error of the two groups in the X direction （P〉0.05）.The Y direction error,Z direction error of observation group were （0.12±0.12）mm,（0.10±0.11）mm,which were significantly lower than those of the control group[（0.23±0.19）mm,（0.19±0.15）mm] （t=2.189,2.163,all P〈0.05）.Set-up repeatability errors in the Y axis,error more than 2mm in the observation group was 14 times,the error rate was 7%,which in the control group was 40 times,the error rate was 20%,the observation group was significantly smaller than the control group,the differences were statistically significant（x2=29.286,7.236,all P〈0.05）.Set-up repeatability error in the Z axis,error more than 2mm in the observation group was 12 times,the error rate was 6%,which in the control group was 34 times,the error rate was 17%,the observation group was significantly smaller than the control group,the differences were statistically significant（x2=29.286,5.944,all P〈0.05）.Conclusion For the patients with head and neck cancer who received three-dimensional conformal radiotherapy,the positioning accuracy and repeatability of the head and neck shoulder film position is better,has higher clinical value,it is worth to be popularized.

关 键 词：头颈部肿瘤 放射疗法 适形 体位 

分 类 号：R730.55[医药卫生—肿瘤]