目的：本研究內容為鈷－60污染鋼筋建物之居民低劑量率輻射致死癌病風險之探討。方法：本研究以日本原爆生還者的起始風險係數，透過人群外推、時間外推（相加、相乘模式）與劑量外推，估算出適合輻射屋居民將來癌病致死的風險因子。結果：評估結果輻射屋居民將來癌病致死之風險因子介於12.15×10^(-2)Sv^(-1)至0.55×10^(-2)Sv^(-1)之間。

Purpose: This research is to study the risk of gamma radiation induced cancer mortalities at low dose rate exposure for residents living in 60Co-contaminated rebar buildings. Methods: The risk factor for residents living in radiation contaminated buildings were evaluated by extrapolation methods of population, time (additive model and multiplicative model) and dose based on the primary risk coefficient of Japanese A-bomb survivor. Results: The derived risk factor is between 12.15×10^(-2)Sv^(-1) and 0.55×10^(-2)Sv^(-1)