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Table 1 Comparison of lesion conspicuity between filtered back projections and iterative reconstructions

From: CT of the chest with model-based, fully iterative reconstruction: comparison with adaptive statistical iterative reconstruction

  Standard-dose CT with FBP Low-dose CT with FBP Low-dose CT with ASIR Low-dose CT with MBIR
Consolidation or mass 4.9 ± 0.2 4.7 ± 0.6 4.8 ± 0.4 4.9 ± 0.2
Ground-glass attenuation 5.0 ± 0.2 4.8 ± 0.4 4.8 ± 0.4 4.8 ± 0.4
Reticular opacity 5.0 ± 0 4.9 ± 0.4 5.0 ± 0 5.0 ± 0
Decreased lung attenuation (bulla, emphysema, or cyst) 4.9 ± 0.2 4.5 ± 0.6 *§ 4.6 ± 0.5 *§ 4.9 ± 0.2
Mediastinal lymph node enlargement 4.8 ± 0.4 3.0 ± 0.5 *§ 4.0 ± 0.5 *§ 4.7 ± 0.5
  1. CT Computed tomography, FBP Filtered back projection, ASIR Adaptive statistical iterative reconstruction, MBIR Model-based iterative reconstruction.
  2. The comparisons of lesion conspicuity scores were made by the Wilcoxon signed-rank test. * refers to statistically significant differences with standard-dose FBP CT (* p < 0.05). § refers to statistically significant differences with low-dose MBIR CT (§ p < 0.05).