A feasibility study of pulmonary nodule detection by ultralow-dose CT with adaptive statistical iterative reconstruction-V technique.

•The mean effective radiation dose of ultralow-dose CT(ULDCT) was 0.096mSv.•Image quality of ULDCT with ASiR-V can meet the diagnostic requirements.•The ULDCT has high sensitivity for pulmonary nodule detection with diameter≥6 mm.•ULDCT is an effective method for measurement of the diameter of pulmonary nodules.•BMI with values<30 kg/m2 has no effects on the detection rate of pulmonary nodules.