护理学报2016，Vol.23Issue(18)：1-5,5.DOI:10.16460/j.issn1008-9969.2016.18.001
肝癌患者植入I125粒子后周围环境辐射剂量率的检测与防护研究
Radiation Detection and Protection for Hepatocellular Carcinoma Patients Undergoing Radioactive I125 Seeds Implantation
摘要
Abstract
Objective To study the change rule of radiation dose rate and effective protection measures for I 125 seeds in hepatocellular carcinoma patients with different seed numbers ,different time and different distances. Methods Ninety-seven patients from Guangdong General Hospital were divided into 5 groups according to the number of I 125 seeds, with no significant demographic differences among groups(P>0.05). Then we tested the radiation dose rate respectively in different time and distances by using a gamma ray detector. The testing was conducted on the day of surgery, 2 months and 4 months later. The measuring position was 0 m, 0.5 m, 1 m and 2 m away respectively from the liver surface area. Results There was statistical difference of inter-group comparison of radiation dose rate (P<0.05). The radiation safety distance was at least 1m for patients with less than 30 seeds and at least 2 m for patients with seeds ranging from 30 to 120 at the day of surgery. For patients with more than 120 seeds, the radiation safety distance was at least 2 m two months after the operation day. All cases indicated that protective clothes for postoperative patients could almost avoid the hazard radiation to the surrounding. Four months after the operation, all cases had no radiation hazard to the surrounding. Conclusion It is safe for the surrounding that the patients receive I 125 radioactive seeds implantation, provided that necessary measures have been taken, such as protective isolation, protective distance, protective time etc.关键词
肝恶性肿瘤/I125放射性粒子/辐射监测/辐射防护Key words
hepatic malignant tumor/radioactive I125 seeds/radiation detection/radiation protection分类
医药卫生引用本文复制引用
蓝绿琴,蒋发烨,陈秀梅,刘睿..肝癌患者植入I125粒子后周围环境辐射剂量率的检测与防护研究[J].护理学报,2016,23(18):1-5,5.基金项目
国家自然科学基金委员会资助项目（81571785）；广州市科技计划项目 （）
