A cost-effectiveness analysis of Gd-EOB-DTPA contrast-enhanced magnetic resonance imaging versus ultrasound in hepatocellular carcinoma screening
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摘要: 目的比较在肝癌高危人群中采用钆塞酸二钠增强MRI(EMRI)与超声行肝癌筛查的成本效益比。方法应用Tree Age Pro 2011软件建立决策树模型,采用数学模型模拟肝硬化患者每6个月行EMRI或超声筛查的成本与收益,计算不同筛查模式下的成本效益比。结果 EMRI组和超声组平均每人每次用于肝癌筛查的成本分别为2050.2元和262.6元,获得效益分别为0.11生命年(YLG)和0.02 YLG。当肝癌发病率为17.8%时,EMRI组与超声组的成本效益比大致相同,每1个YLG的成本大致均为11445元,肝癌发病率越高,EMRI检查成本越低,筛查效果越好。EMRI价格越低,其成本效益比逐渐下降,筛查效果越明显。结论肝癌筛查的成本效益与肝癌发病率及检查价格密切相关。当肝癌风险高于17.8%时,采用EMRI筛查可获得较好的成本效益比。Abstract: Objective To investigate the cost-effectiveness ratio of Gd-EOB-DTPA contrast-enhanced magnetic resonance imaging (EMRI) versus ultrasound in liver cancer screening for the high-risk population. Methods The Tree Age Pro 2011 software was used to establish a decision-tree model. A mathematical model was used to simulate the costs and benefits of EMRI or ultrasound screening every 6 months in patients with liver cirrhosis, and the cost-effectiveness ratios under different screening models were calculated. Results The EMRI group had a mean cost of liver cancer screening of 2050. 2 RMB each person each time and mean benefits of 0. 11 YLG, while the ultrasound group had a mean cost of 262. 6 RMB and mean benefits of 0. 02 YLG. When the incidence rate of liver cancer was 17. 8%, the EMRI group had a similar cost-effectiveness ratio as the ultrasound group, and the cost of 1 YLG was 11445 RMB; EMRI tended to have a lower cost and a better effect in screening with the increase in the incidence rate of liver cancer. The cost-effectiveness ratio of EMRI gradually decreased with the reduction in its price, and its effect in screening gradually increased with the reduction in price. Conclusion The cost-effectiveness of liver cancer screening is closely related to the incidence rate of liver cancer and the price of screening. EMRI has a good cost-effectiveness ratio in screening when the risk of liver cancer is higher than 17. 8%.
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