Figure 2.

Axial images of a 51-year-old female after resection and chemotherapy of gastric cancer (body mass index, 20.7 kg/m²). The first scans with routine dose and FBP reconstruction (A), with the subjective scores of 4, 5, 5, 5 in artifacts, noise, visualization of small structures, and confidence of targeted lesions, respectively. The second scans with low dose and FBP reconstruction (B), with significant image noise and fail to reach diagnostic acceptable image quality in visualization of small structures. The second scans with low dose and IMR reconstruction (C), with the subjective scores of 4, 5, 5, 5. FBP, filtered back projection; IMR, iterative model reconstruction.