title: Effect of digital edge-enhancement on the visibility of normal parenchymal lung markings.
abstract: Digital 'conventional-like' (C-L) and edge-enhanced (E-E) posteroanterior chest roentgenograms of 42 healthy individuals were ranked twice (interval of at least 5 days) in the order of increasing lung parenchymal markings (a total of four rankings). This was done by three radiologists, two residents, one medical student and one radiographer. There was a good general consistency of rankings for both the C-L and E-E images. The correlation coefficients were best (median 0.600) (P < 0.05) between the consequent rankings of C-L images compared to the subsequent rankings of E-E images (median 0.440) and to the various combinations between the rankings of both kinds of images. Subtle differences in normal lung parenchyma could, therefore, generally (five of the seven observers) best be demonstrated in C-L images, but two observers managed best with the E-E images.
authors.affiliation: Department of Radiology, University of Helsinki, Finland.
authors.forename: T
authors.initials: T
authors.lastname: Vehmas
authors.forename: O
authors.initials: O
authors.lastname: Korhola
authors.forename: P
authors.initials: P
authors.lastname: Pölönen
authors.forename: T
authors.initials: T
authors.lastname: Knuutila
authors.forename: A
authors.initials: A
authors.lastname: Kivisaari
authors.forename: J
authors.initials: J
authors.lastname: Holmberg
authors.forename: S
authors.initials: S
authors.lastname: Bondestam
authors.forename: H
authors.initials: H
authors.lastname: Tikkanen
mesh_terms: D000328:Adult; D000465:Algorithms; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D011856:Radiographic Image Enhancement / Q000379:methods*