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Standard-dose FBP CT images at the level of aortic arch (A) and at the level of lower lung lobe (C), and low-dose MBIR CT images at the corresponding level (B and D) in a 67 year-old woman with lung cavities and reticular opacity. Image quality score for those lesions on low-dose MBIR CT are both graded 5, showing equivalent on standard-dose FBP CT. Objective image noise measured is 13.04 on standard-dose FBP CT and 11.09 on low-dose MBIR CT in this patient.
