Oostveen LJ, et al. - This study was attempted to assess the technical performance of an ultra-high-resolution CT (UHRCT) system. Researchers evaluated the physico-technical capabilities of a novel commercial UHRCT system and compared it with those of a current-generation multi-detector (MDCT) system. This study applied standard procedures and phantoms to perform these assessments. The results showed that the UHRCT modulation transfer function (MTF) is twice as high as that of the MDCT, which is similar to the MTF in the NR mode. Sixty percent was the width of the slice sensitivity profile in the SHR mode as that of the MDCT. It was concluded that HR and SHR mode scanning appears in double the spatial resolution, with about a 23% improvement in the dose needed to achieve the same low-contrast detectability.