摘要
目的利用锥形束CT(CBCT)研究颈、胸上段食管癌使用颈肩膜、体膜两种固定方式放疗时的摆位误差,为临床治疗更优选择提供依据。方法随机选取66例拟行放射治疗的颈、胸上段食管癌患者,平均分成A、B两组。A组定位时采用热塑颈肩膜固定,B组采用热塑体膜固定。利用CBCT对每位患者首次治疗前摆位误差进行测量,然后使用SPSS17.0软件统计分析。结果 A组在左右(X)、头脚(Y)、前后(Z)方向上测量的摆位误差分别为(0.20±0.14)、(0.15±0.15)、(0.23±0.15)cm,而B组为(0.16±0.13)、(0.24±0.16)、(0.18±0.12)cm,A组误差数据优于B组,特别在头脚(Y)轴差异有统计学意义(P<0.05)。结论颈肩膜固定技术可以减少颈、胸上端食管癌患者放疗中的摆位误差,操作简便易行,值得临床进一步推广应用。
Objective To investigate the radiotherapeutic positioning errors between using the fixation modes of cervical shoulder film and body film by using the cone beam CT（CBCT）in cervical and upper thoracic esophageal cancer to provide a reference for a better choice of clinical treatment.Methods 66 cases of cervical and upper thoracic esophageal cancer undergoing radiotherapy were randomly selected and equally divided into the group A and B.The group A adopted the thermoplastic neck and shoulder membrane fixation in positioning,while the group B adopted the thermoplastic body membrane fixation.CBCT was used to measure the positioning errors before initial therapy in each case.The SPSS17.0software was used to perform the statistical analysis.Results The positioning errors from the directions of left-right（X axial）,superior-inferior（Y）and anterior-posterior（Z）in the group A were（0.20±0.14）,（0.15±0.15）,（0.23±0.15）cm respectively,and which in the group B were（0.16±0.13）,（0.24±0.16）,（0.18±0.12）cm respectively,the errors data in the group A were superior to those in the group B,especially which in the head and feet had statistical significance（P〈0.05）.Conclusion The cervical shoulder membrane fixation technology can reduce the radiotherapeutic positioning errors during radiotherapy in the patients with cervical and upper thoracic esophageal cancer,its operation is easy and feasible,which is worth further clinical promotion and application.
出处
《检验医学与临床》
CAS
2016年第7期881-882,共2页
Laboratory Medicine and Clinic
基金
重庆市医学重点研究室建设资助项目(2007-14)
关键词
放射治疗
锥形束CT
摆位误差
食管癌
radiation therapy
cone beam CT
positioning errors
esophageal cancer
