摘要
目的通过比较两种体膜使用方式的摆位误差,为精确放疗提供更好的摆位方法。方法选取2013年8月～2014年10月收治于我科的50例肺癌患者,随机分为常规体膜组和开窗体膜组,所有患者均接受调强放射治疗,每例患者每周治疗前行一次锥形束CT扫描,测量摆位误差并对两组数据进行统计分析。结果常规体膜组和开窗体膜组在左右、头足、前后方向摆位误差分别为（2.62±2.06）mm和（2.00±1.61）mm（P=0.008）、（3.78±2.86）mm和（3.10±1.86）mm（P=0.027）、（1.67±1.32）mm和（1.42±1.10）mm（P=0.97）。结论开窗体膜的使用方式可有效减少左右和头足方向的摆位误差,提高摆位精度。
Objective To compare the set-up errors of two body membrane usage methods so as to provide a better set-up method for precision radiotherapy. Methods Fifty patients with lung cancers who had been treated in Department of Radiation Oncology in the hospital from August 2013 to October 2014 were selected and randomly divided into Conventional Body Membrane Group and Window Body Membrane Group. All the patients received intensity-modulated radiation therapy（IMRT）. Each patient carried on cone beam computerized tomography（CBCT） once a week to measure set-up errors online and correct set-up errors timely. Statistical analysis of the set-up error data of the two groups was performed. Results Set-up errors in the left-right, head-foot, anterior-posterior direction were（2.62±2.06） mm and（2.00±1.61） mm（P=0.008）,（3.78±2.86） mm and（3.10±1.86） mm（P=0.027）,（1.67±1.32） mm and（1.42±1.10） mm（P=0.97） in Conventional Body Membrane Group and Window Body Membrane Group, respectively. Conclusion The usage of window body membrane could reduce set-up errors effectively in the left-right and head-foot direction and improve the set-up accuracy.
出处
《中国医疗设备》
2015年第12期120-122,共3页
China Medical Devices
关键词
摆位误差
体膜
肺癌
精确放疗
set-up errors
body membrane
lung cancers
precision radiotherapy
