Assessment of sub-milli-sievert abdominal computed tomography with iterative reconstruction techniques of different vendors

Figure 2 Top row (A-D) and bottom (E-H) row of a 68-year-old female. A-D: Transverse abdominal CT images of a 68-year-old female (BMI 25 kg/m²) acquired at SD FBP (5 mGy) and RD (1.3 mGy) (reconstructed with B-1, B-2, and B-3). The gall bladder stones (arrows) were optimally depicted on SD FBP but missed on RD B-1, RD B-2, and RD B-3 images; E-H: Transverse abdominal CT images of a 71-year-old female (BMI 25 kg/m²) acquired at SD FBP (5 mGy) and RD (1.2 mGy) (reconstructed with B-1, B-2, and B-3). The liver parenchyma was optimally depicted on SD FBP, scored sufficiently on RD B-3, and limited on RD B-1 and RD B-2 images. SD: Standard of care; FBP: Filtered back projection; RD: Reduced dose; BMI: Body mass index; CT: Computed tomography.