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

Figure 3 Top row (A-D) and bottom row (E-H) of a 41-year-old female. A-D: Transverse abdominal CT images of a 41-year-old female (BMI 38 kg/m²) acquired at SD FBP (16 mGy) and RD (1.3 mGy) (reconstructed with C-1, C-2, and C-3). The gall bladder stone (arrows) was optimally depicted on SD FBP. However, gall bladder stone was missed on RD C-1, RD C-2, and RD C-3 images; E-H: Transverse abdominal CT images of a 29-year-old male (BMI 18 kg/m²) acquired at SD FBP (6 mGy) and RD (1.4 mGy) (reconstructed with C-1, C-2, and C-3). The liver parenchyma was optimally depicted on SD FBP, scored sufficiently on RD C-3, and limited on RD C-1 and RD C-2 images. SD: Standard of care; FBP: Filtered back projection; RD: Reduced dose; BMI: Body mass index; CT: Computed tomography.