体位固定器在CT引导放射性^125I粒子植入治疗头颈部癌中的应用  

The application of external fixator in CT guided 12sI Seeds implantation to treat head and neck neoplasms

作　　者：范京红[1] 高阳[1] 林蕾[1] 王俊杰[1] 孟娜[1] 刘子毅[1] 姚海琳[1] 

机构地区：[1]北京大学第三医院放疗科,100191

出　　处：《中华医学杂志》2014年第35期2772-2774,共3页National Medical Journal of China

摘　　要：目的 观察体位固定器在CT引导下放射性125I粒子植入治疗头颈部癌中对体位固定的影响.方法 回顾分析2012年4月至2013年4月北京大学第三医院20例头颈部癌行CT引导放射性125I粒子植入患者,A组10例应用体位固定器固定,B组10例应用常规束缚带固定,行螺旋CT扫描,扫描层距5 mm,分别选择手术第1序列与最后1序列CT图像,运用计算机治疗图像配准软件进行自动融合,得到三维方向上患者移动偏差.结果 A组患者X、Y、Z轴体位偏移分别为1.06、1.22和0.97 cm,B组患者X、Y、Z轴体位偏移分别为8.76（P =0.041）、9.99（P =0.009）和4.78 cm（P=0.023）.结论 体位固定器在CT引导放射性125I粒子植入治疗头颈部癌中的应用,具有良好的固定作用,增加了舒适度,提升了定位精度,减少了重复扫描的额外辐射剂量.Objective To investigate the effect of external fixator in posture fixation during the interstitial of 125I seeds implantation for head and neck cancer under CT guidance.Methods 20 cases of head and neck cancer patients with CT guided radioactive 125I particle implantation were enrolled.10 patients of group A for external fixator,the other 10 of group B used conventional bind belt.Spiral CT scanning was performed with 5 mm slices,and we chose the first and last serial CT images during the operation for image fusion with automatic registration software,then we could get 3D displacement errors.Results Patients in group A of X,Y,Z axis position deviation were 1.06 cm,1.22 cm and 1.22 cm,respectively.As to group B,they were 8.76 cm （P =0.041）,9.99 cm （P =0.009） and 0.009 cm （P =0.023）,respectively.Conclusion The external fixator could applied in the treatment of head and neck cancer during CT-guided 125I seed implantation,which fixed well in the operation,more comfortable,improve the positioning accuracy and reduce the extra rescanning radiation doses.

关 键 词：外固定器 碘放射性同位素 头颈部肿瘤 

分 类 号：R739.91[医药卫生—肿瘤]