摘要
目的:介绍头颈肿瘤立体定向放射治疗实施过程中各环节质量保证措施。方法:从我科实施立体定向放射治疗的患者中随机抽取30例,将患者按拓能固定装置进行体位固定,用面罩固定头颈部,并在面罩上开窗,标记复位标志,用GE螺旋CT定位,拓能计划系统设计治疗计划,治疗计划经过验证合格后治疗,记录摆位前后的参数,对摆位误差进行分析。结果:30例头颈肿瘤患者测试结果显示摆位误差为≤2mm。结论:QA是保证立体定向放射治疗精度极重要的措施,只有严格执行QA措施,才能取得精确而满意的疗效。
Objective To introduce the methods for quality assurance of stereotactic radiotherapy in head and neck cancers. Methods Firstly, thirty cases were randomly selected. Secondly, patients were set up with Topsland fixtures, and their heads ＆ necks were fixed with plastic masks, on which windows were open and the signs of reposition were marked. Thirdly, the treatment plan was designed by GE-helical CT-scan and Topsland plan system. Finally, after certification eligibility, the treatment plan was performed to record the parameters of anterior-posterior and analysis errors of setting up. Results： The testing results revealed that the position error was no more than 2ram. Conclusion： QA is a very important measure to guarantee the precision of stereoscopic directional radiotherapy. Only when the QA measure has been strictly carried out, the precise and satisfactory effect can be obtained.
出处
《医疗卫生装备》
CAS
2006年第7期61-62,共2页
Chinese Medical Equipment Journal
关键词
头颈部肿瘤
质量保证
立体定向放射治疗破
head and neck cancers
quality assurance
stereo tactic radiotherapy
