Euler A, et al. - In the present study, the image quality and radiation dose of abdominal split-filter dual-energy CT (SF-DECT) combined with monoenergetic imaging to single-energy CT (SECT) with automatic tube voltage selection (ATVS) were compared. For this analysis, 200 single-source abdominal CT scans were performed as SECT with ATVS (n = 100) and SF-DECT (n = 100). It was observed that the image noise of split-filter Dual-energy Composed Images (SF-CI) was 18% lower compared to single-energy images (SEI) and 48% lower compared to split-filter Dual-energy Monoenergetic Images (SF-MI). Compared to single-energy CT with ATVS, the combined use of split-filter dual-energy CT images provided comparable objective and subjective image quality at lower radiation dose.