Fig 2.

High-contrast-resolution assessment by using the ACR phantom.⁷ CT images obtained at a regular dose without ASIR (A), at a lower dose without ASIR (B), and at a lower dose with 60% (C) and 100% (D) of ASIR blending demonstrate the effect of different ASIR levels and the lower-dose technique in comparison with the regular-dose technique on high-contrast-resolution bar patterns. There are no apparent differences in the ability to discriminate individual bar patterns between these techniques.