摘要
目的探讨新型直肠癌放疗个体化固定装置在直肠癌患者放疗体位固定中的临床应用效果。方法选择浙江省肿瘤医院2015年6月至2016年12月接受外照射放疗的直肠癌患者60例,采用随机数字表法分为两组,甲组31例应用新型直肠癌放疗体位固定装置加热塑体膜,乙组29例应用简易泡沫垫加热塑体膜。在每次治疗前进行锥形束CT(CBCT)扫描,应用CBCT图像和计划重建图像比较两组左右(X)、上下(Y)、前后(Z)轴方向的摆位误差。结果甲组X、Y、Z轴方向的平均摆位误差分别为(1.61±0.18)mm、(1.82±0.13)mm、(1.91±0.11)mm,乙组X、Y、Z轴方向的平均摆位误差分别为(2.22±0.13)mm、(2.43±0.14)mm、(2.36±0.13)mm,两组差异均有统计学意义(t=14.958、17.501、11.283,均P<0.001)。结论新型直肠癌放疗体位固定装置在舒适度上较简易泡沫垫高,摆位误差小于简易泡沫垫加热塑体膜。
Objective To explore the clinical effect of new type rectal cancer radiotherapy individualized fixation device in the radiotherapy of rectal cancer. Methods From June 2015 to December 2016, 60 patients with rectal cancer who accepted the external irradiation in Zhejiang Tumor Hospital were divided into two groups by random number table method.A group(31 cases) received new type rectal cancer radiotherapy position fixation devices with thermoplastic film.B group(29 cases) received simple foam pad with thermoplastic film.Before each treatment, Cone beam CT(CBCT) scan was conducted.The applied CBCT image and the planned reconstruction image were compared in the direction of X(left and right), Y(upper and lower)and Z(front and rear) axis.The setup error was recorded, and the correlation between the two groups was analyzed. Results The average setup error of patients in A group in X(left and right), Y(upper and lower), Z(front and rear) axis were (1.61±0.18)mm, (1.82±0.13)mm, (1.91±0.11)mm, respectively.The average setup error of patients in B group in X(left and right), Y(upper and lower), Z(front and rear) axis were (2.22±0.13)mm, (2.43±0.14)mm, (2.36±0.13)mm, respectively.There were statistically significant differences between the two groups(t=14.958, 17.501, 11.283, all P<0.001). Conclusion The new type of rectal cancer radiotherapy position fixing device is more comfortable than the simple foam pad, and the setting error is smaller than the simple foam pad.
作者
陈国付
颜桂明
张飞燕
Chen Guofu;Yan Guiming;Zhang Feiyan(Department of Radiation Physics ,Zhejiang Tumor Hospital,Hangzhou ,Zhejiang 310022,China)
出处
《中国基层医药》
CAS
2019年第1期2-5,共4页
Chinese Journal of Primary Medicine and Pharmacy
基金
浙江省卫生和计划生育委员会基金资助项目(2015KYB070).
关键词
直肠肿瘤
放射疗法
适形
体层摄影术
X线计算机
体位
辐射损伤
固定装置
塑料
体模
显象术
Rectal neoplasms
Radiotherapy, conformal
Tomography, X-ray computed
Posture
Radiation injuries
Fixing device
Plastics
Phantoms, imaging
