Sieren, J P Reference standard and statistical model for intersite and temporal comparisons of CT attenuation in a multicenter quantitative lung study. [electronic resource] - Medical physics Sep 2012 - 5757-67 p. digital Publication Type: Comparative Study; Journal Article; Multicenter Study; Research Support, N.I.H., Extramural ISSN: 0094-2405 Standard No.: 10.1118/1.4747342 doi Subjects--Topical Terms: AirHumansImage Processing, Computer-Assisted--standardsModels, StatisticalMolecular EpidemiologyPulmonary Disease, Chronic Obstructive--diagnostic imagingReference StandardsTime FactorsTomography, X-Ray Computed--methodsWater