Lung nodule assessment in computed tomography: precision of attenuation measurement based on computer-aided volumetry.

PURPOSE To compare the reproducibility (r) of CT value measurement of pulmonary nodules using volumetry software (LungCare, LC) and manual ROIs (mROI). MATERIALS AND METHODS 54 artificial nodules in a chest phantom were scanned three times with CT. CT values were measured with LC and mROI. The intrascan-r was assessed with three measurements in the first… (More)