Volumetric assessment of solid pulmonary nodules on ultralow-dose CT: a phantom study

To reduce the radiation exposure from chest computed tomography (CT), ultralow-dose CT (ULDCT) protocols performed at sub-millisievert levels were previously tested for the evaluation of pulmonary nodules (PNs). The purpose of our study was to investigate the effect of ULDCT and iterative image reconstruction on volumetric measurements of solid PNs.CT datasets of an anthropomorphic chest phantom containing solid microspheres were obtained with a...