全身骨显像对医院人群辐射影响的初步研究  

The Effect of Bone Scan on the Radiation Exposure of Population in Hospital

作　　者：何文果[1] 段云[1] 徐蓉生[1] 武鸿文[1] 

机构地区：[1]四川省肿瘤医院核医学科,成都610041

出　　处：《肿瘤预防与治疗》2013年第1期21-23,共3页Journal of Cancer Control And Treatment

摘　　要：目的:评估全身骨显像患者注射显像剂后对医院人群的辐射安全影响。方法:全身骨显像患者50例注射骨显像剂^(99m)Tc-亚甲基二膦酸盐(^(99m)Tc-MDP)922MBq后0.5小时、1小时、2小时和4小时,使用剂量测量仪距离患者0.5米、1米、2米分别测量头部、腹部辐射剂量值。结果:平均辐射剂量值(μSv/h)在注射显像剂0.5小时后距离0.5米处最高,其中头部(37.69±0.67)μSv/h、腹部(43.40±0.78)μSv/h。在距离一定时,注射后0.5小时较1小时、2小时、4小时平均辐射剂量值高,差异有统计学意义(P<0.05)。在时间一定时,距离患者0.5米处测量平均辐射剂量值较距离1米、2米处高,差异有统计学意义(P<0.05)。随时间、距离增加,测量值迅速降低。结论:全身骨显像患者对医院人群的辐射测量值在相对安全范围以内(≤20mSv,职业工作人员的年当量剂量)。Objective： To evaluate the radiation exposure effect on the people in hospital from the patients who underwent 99mTc-MDP whole body bone scan. Methods：The radiation dosage of 50 patients were measured with dosimeter at 0. 5h, 1h ,2h and 4h after 99mTc-MDP 922MBq injection and at the distance of 0. 5m,1 m and 2m at the height level of head and abdomen, respectively. Results：The mean radiation exposure （ptSv/h） at 0. 5h after injection and at the distance of 0.5 m was the highest which was （37.69 ±0. 67 ） μ Sv/h at the height of the head and （43.40 ± 0. 78 ） μSv/h at the height of abdomen. When at the same distance, the mean radiation exposure at 0. 5 h was significantly higher than that at 1 h ,2h ,4h after injection （P 〈 0. 05 ）. When time point was fixed , the mean radiation exposure at the distance of 0.5m was significantly higher than that at the distance of 1 m, 2m（P 〈 0. 05）, Radiation ex- posure decreased rapidly with the increasing of time and distance. Conclusion ： The amount of radiation exposure from the patients un- derwent whole body bone scan to the people in hospital is within a relatively safety range（≤20mSv）.

关 键 词：全身骨显像 辐射剂量 医院人群 

分 类 号：R730.44[医药卫生—肿瘤] R73-31[医药卫生—临床医学]