Standard chest CT using combined automated tube potential selection and iterative reconstruction: image quality and radiation dose reduction

ObjectiveTo evaluate the image quality and radiation dose reduction of chest computed tomography (CT) using combined automated tube potential selection (ATPS) and iterative reconstruction (IR).Materials and MethodsImage quality and radiation dose were compared between conventional contrast-enhanced chest CT using 120 kVp and filtered back projection (Protocol A) and CT using ATPS and IR (Protocol B) in 43 patients.ResultsThe effective radiation dose was 3.6±0.4 mSv for Protocol A and 2.2±0.6 mSv for Protocol B (mean dose reduction, 39.7%). Protocol B showed diagnostic image quality in all patients.ConclusionATPS and IR allows for radiation dose reduction while maintaining diagnostic image quality.