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铅门固定技术在中晚期鼻咽癌患者调强放射治疗中的应用 被引量:1

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摘要 目的比较中晚期鼻咽癌病例分别采用固定铅门技术(fix-jaws technique,FJT)和分野技术(split-field technique,SFT)在调强放射治疗中的剂量学差异。方法所选50例鼻咽癌患者均使用治疗计划系统分别设计固定铅门调强(FJT-IMRT)和分野调强(SFT-IMRT)两种放射治疗计划。比较两种计划的靶区剂量适形度和均匀性参数,以及危及器官受量和剂量监测机器跳数、出束治疗时间等差别。结果 FJTIMRT和SFT-IMRT两者的计划靶区剂量适形度、剂量均匀性指数以及危及器官之间的差异均无统计学意义(P>0.05);前者的机器平均总跳数比后者的要少20%(t=8.842,P<0.05)。结论两种计划均能满足所选取鼻咽癌病例的临床剂量要求,危及器官均能控制在耐受范围内,FJT-IMRT计划的出束时间明显比SFTIMRT的少,效率明显提高。
出处 《医疗装备》 2017年第3期129-130,共2页 Medical Equipment
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