CAJ | 학술논문

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.
목적 관찰체위고정기재CT인도하방사성125I입자식입치료두경부암중대체위고정적영향.방법 회고분석2012년4월지2013년4월북경대학제삼의원20례두경부암행CT인도방사성125I입자식입환자,A조10례응용체위고정기고정,B조10례응용상규속박대고정,행라선CT소묘,소묘층거5 mm,분별선택수술제1서렬여최후1서렬CT도상,운용계산궤치료도상배준연건진행자동융합,득도삼유방향상환자이동편차.결과 A조환자X、Y、Z축체위편이분별위1.06、1.22화0.97 cm,B조환자X、Y、Z축체위편이분별위8.76(P =0.041)、9.99(P =0.009)화4.78 cm(P=0.023).결론 체위고정기재CT인도방사성125I입자식입치료두경부암중적응용,구유량호적고정작용,증가료서괄도,제승료정위정도,감소료중복소묘적액외복사제량.
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.