Miller AR, et al. - Researchers have determined whether ultra-low-dose (ULD) computed tomography (CT) using model-based iterative reconstruction (MBIR) with radiation equivalent to plain radiography enables lung nodules to be detected. During the same sitting, 99 people under surveillance of solid pulmonary nodules undertook a low-dose (LD) and ULD CT. For both the LD- and ULD-CT, there was a very good inter-rater agreement with regards to nodules ≥4mm. Between the two scans, 1.67 mSv for the LD-CT and 0.13 mSv for the ULD-CT, the effective radiation dose was significantly different. According to findings, ULD-CT, which uses MBIR and delivers radiation equivalent to plain radiography, enables the detection of high sensitivity lung nodules. In cumulative radiation exposure, the attendant 10-fold reduction in radiation might allow for dramatic reductions.