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Objective To explore the application value of image fusing for detecting hepatic carcinomas with dual-energy linear blending (LB) and non-linear blending (NLB) using dual-source CT.Methods Totally 30 patients with hepatic carcinoma underwent dual-energy CT scan.Images of 140 kV and 80 kV were fused to 0.3LB,0.5LB,0.7LB,NLB1 (λ=80 HU,ω=400 HU),NLB2 (λ=150 HU,ω=200 HU) and NLB3 (λ=80 HU,ω=200 HU) images.The background noise,contrast and contrast-noise-ratio (CNR) of liver lesions among 6 sets blending energy images and 80 kV images during arterial phase were compared.Results There were statistic differences on background noise,contrast and CNR of liver lesions among 7 sets images during arterial phase (all P<0.05).Compare to 0.3LB images,contrast and CNR of lesions on 0.5LB,0.7LB,80 kV,NLB1,NLB2 and NLB3 images increased obviously (all P<0.05),and CNR on NLB1 images was the largest.Conclusion Image fusion for detecting hepatic carcinomas with 0.5LB,0.7LB and NLB technique can improve CT depiction of hepatic carcinomas,especially by using NLB technique when λ=80 HU and ω=400 HU.