| 宋铁砾,郑磊,李亚刚,黄明伟,张杰,张建国.放射性125I粒子植入腮腺区后位置的稳定性[J].中华放射医学与防护杂志,2008,28(5):517-519 |
| 放射性125I粒子植入腮腺区后位置的稳定性 |
| 125I seed fixity after implantation in parotid region |
| 投稿时间：2007-09-15 |
| DOI： |
| 中文关键词: 125I粒子 稳定性 治疗计划系统 腮腺 |
| 英文关键词:125I seed implantation Fixity Treatment planning system Parotid |
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| 中文摘要: |
| 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,计数粒子数量,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%等剂量曲线所包围的面积、剂量均匀指数。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。处方剂量50%、100%、150%等剂量曲线所包围面积以及剂量均匀指数包括粒两次之间差异无统计学意义。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。 |
| 英文摘要: |
| Objective To observe the fixity of 125I seed after implantation in parotid region. Methods Ten patients treated with 125I seed interstitial brachytherapy in parotid were randomly selected. Within one week after the treatment, two plane radiographs were taken by 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 differences in two examinations either for 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. |
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