摘要
目的研究放射性^125I粒子植入腮腺区后的位置稳定性：方法随机选择10例行^125I粒子腮腺区组织间植入治疗的患者，植入后1周内使用放射治疗模拟机拍摄两张不同角度的平片，计数粒子数遗，并通过治疗计划系统（TPS）做平面剂量分析．计算处方剂量的50％、100％、150％等剂量曲线所包旧的面积、剂精均匀指数。粒子植入后2个月，重复上述过程，比较两次结果并进行统计学分析。结果两次检查粒子数量一致：处方刹量50％、100％、150％等剂量曲线所包嗣面积以及剂量均匀指数包括粒两次之间差肄无统计学意义结论放射性^125I粒子植入腮腺嚼肌区后，位置稳定，使治疗效果得到保证.
Objective To observe the fixity of ^125I seed after implantation in parotid region. Methods Ten patients treated with ^125I seed interstitial hrachytherapy in parotid were randomly selected. Within one week after the treatment, two plane radiographs were taken bv radiotherapy simulator and ^125I seed was counted. All plane dosimetry analysis were performed by treatment planning system. The areas surrounded by 50% , 100% and 150% of prescription dose curve and dose equality index were calculated. Two months after the treatment, the same examination were repeated and were compared with t test. Results The number of seeds was equal in two examination. There were no significant differenees in two examinations either fnr the areas surrounded by 50%, 100% and 150% of prescription dose curve or for the dose equality index. Conclusions The position of ^125I seed after implantation in parotid region is quite fixable, which can ensure the curative effect.
出处
《中华放射医学与防护杂志》
CAS
CSCD
北大核心
2008年第5期517-519,共3页
Chinese Journal of Radiological Medicine and Protection
基金
首都医学科研发展基金资助项目（2005-2006）
关键词
^125I粒子
稳定性
治疗计划系统
腮腺
^125I seed implantation
Fixity
Treatment planning system
Parotid
