可兼容磁共振模拟定位的新型体位固定装置在头颈部放疗中的应用  

Application of New Posture Fixation Device Compatible with Magnetic Resonance Simulation Positioning in Head and Neck Radiotherapy

作　　者：胡臻尧 李光俊[1] 柏森[1] HU Zhenyao;LI Guangjun;BAI Sen(Department of Radiotherapy,West China Hospital,Sichuan University,Chengdu,610041)

机构地区：[1]四川大学华西医院放疗科,成都市610041

出　　处：《中国医疗器械杂志》2021年第3期349-354,共6页Chinese Journal of Medical Instrumentation

摘　　要：目的探究研发的可兼容头颈联合线圈的新型放疗辅助固定装置进行磁共振模拟定位是否可以改善放疗中磁共振图像质量,并验证是否能应用于临床治疗。方法临床试验选取脑转移患者和鼻咽癌患者,使用热塑膜和头肩模具进行体位固定,在Elekta Versa加速器上进行治疗。采用SPSS 20.0统计学软件对数据进行分析,计量资料采用X±S表示,采用t检验,以P<0.05为差异有统计学意义。结果在考虑装置外轮廓的影响下,靶区剂量满足临床要求。摆位误差在三个平移方向小于2 mm,旋转误差在三个旋转方向上小于2o。结论使用新型固定装置的患者于治疗结果与常规方式无统计学差异,靶区危及器官剂量,摆位误差满足治疗要求。Objective Whether the developed new type of radiotherapy auxiliary fixation device compatible with the head and neck joint coil can improve the quality of magnetic resonance images in radiotherapy and verify whether it can be applied to clinical treatment.Methods The clinical trial selected patients with brain metastases and nasopharyngeal cancer patients,using thermoplastic film and head and shoulder molds for posture fixation,and treatment on the ELekta Versa accelerator.SPSS 20.0 statistical software was used to analyze the data.The measurement data were expressed by X±S,and the t test was used.P<0.05 was considered as statistically significant.Results Considering the influence of the outer contour of the device,the target dose meets the clinical requirements.The setting error is less than 2 mm in the three translation directions,and the rotation error is less than 2o in the three rotation directions.Conclusion There is no statistical difference between the treatment results of patients using the new type of fixation device and the conventional method.The target area threatens the organ dose,and the positioning error meets the treatment requirements.

关 键 词：磁共振定位 放疗线圈 体位固定装置 

分 类 号：R197.39[医药卫生—卫生事业管理]