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Representative images of a solid nodule (8 mm diameter) obtained with different CT dose levels: (a) standard dose 120 kVp, 100 mAs; (b) 1/8 dose level 100 kVp, 80 mAs; (c) 1/20 dose level 100 kVp, 30 mAs; (d) 1/70 dose level 100 kVp, 10 mAs; all images were reconstructed with advanced modelled iterative reconstruction (ADMIRE) at a strength level of 5.
