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作 者:肖青[1] 李光俊[1] 柏森[1] XIAO Qing;LI Guangjun;BAI Sen(Department of Radiotherapy,State Key Laboratory of Biotherapy and Cancer Center,West China Hospital,Sichuan University,Chengdu,610041)
机构地区:[1]四川大学华西医院肿瘤中心生物治疗国家重点实验室放疗科,成都市610041
出 处:《中国医疗器械杂志》2021年第2期231-236,共6页Chinese Journal of Medical Instrumentation
摘 要:精确的CT模拟定位是精准放疗的关键环节,而CT模拟机定位床的性能直接影响放疗精度。随着精准放疗的迅速发展,常规大孔径放疗专用CT模拟机难以满足精准放疗定位需求,因此大多放疗中心选择将高性能诊断CT机配置放疗专用平板床后用于放疗定位。但在临床工作中,CT模拟机定位床的性能检测容易被忽视,且将诊断CT机弧形凹面床改造为放疗专用平板床普遍存在精度不够等问题。就四川大学华西医院引进的全国第一台放疗专用GE Revolution CT模拟机定位床的改进设计及性能测试进行深入阐述,以供同行参考。改进后,定位床各项验收测试均符合标准,且性能满足本中心不同体重患者的高精度放疗定位需求。Accurate CT simulation is the key link of precision radiotherapy,and the performance of the localization couch of CT simulator directly affects the accuracy of radiotherapy.With the rapid development of precision radiotherapy,conventional large aperture radiotherapy special CT simulator is difficult to meet the needs of precision radiotherapy localization,so most radiotherapy centers choose high-end diagnostic CT machines equipped with a flat tabletop for radiotherapy localization.In clinical work,the performance testing of the CT simulator localization couch is easy to be ignored.In addition,there are some problems such as insufficient precision in transforming the cradle-shaped couch top of diagnostic CT into a special flat couch top for radiotherapy.This paper provided an in-depth description of the improved design and performance test of the localization couch of the first special GE Revolution CT simulator for radiotherapy introduced by West China Hospital of Sichuan University.After the improvement,all the acceptance tests of the localization couch are in line with the standard,and the performance meets the high-precision radiotherapy localization needs of patients with different body weight in the center.
关 键 词:CT模拟机 定位床 验收测试 质量保证 改进设计
分 类 号:R197.39[医药卫生—卫生事业管理]
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