Figure 3.

In-plane MTF curves of the CT scanners from 5 different manufacturers reconstructed with FBP (A,C) and the manufacturer-specific IR (B,D) at 0.25 mGy (A,B) and 0.75 mGy (C,D). The manufacturer-specific IR of the GE Healthcare, Philips, Siemens, Minfound, and Neusoft CT scanners were ASiR-V50%, iDose⁴ [3], ADMIRE [3], NDI [3], and CV50%, respectively. MTF, modulation transfer function; CT, computed tomography; FBP, filtered back projection; IR, iterative algorithm; mGy, milligray; ASiR-V50%, adaptive statistical iterative reconstruction 50%; iDose⁴ [3], fourth-generation hybrid iterative reconstruction, level 3; ADMIRE [3], advanced modeled iterative reconstruction, level 3; NDI [3], nano dose iterative, level 3; CV 50%, clear view 50%.