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Fig. 3A —Bar graphs indicate number of lesions that showed (A) higher tumor-to-liver attenuation difference (TLAD), (B) visual conspicuity, and (C) interpreter preference in each phase image in each group. Gray bars denote number of lesions for which TLAD1 was greater than TLAD2, and black bars represent number of lesions for which TLAD2 was greater than TLAD1. In groups 1 to 4, larger number of lesions showed higher contrast in second arterial phase image than in first arterial phase image. In groups 5 and 6, larger number of lesions showed higher contrast in first arterial phase images.