Fig. 1From: Influence of spectral shaping and tube voltage modulation in ultralow-dose computed tomography of the abdomenBoxplots illustrate differences in quantitative image quality assessment. At a standard dose level (CTDIvol = 3 mGy), image acquisition with tin filtration at 100 kVp generated the highest signal-to-noise levels of all scan protocols in every tissueNote. CI– conventional imaging protocol without tin prefiltrationBack to article page