title: Large-image intensifier photofluorography and conventional radiography in pulmonary emphysema. Correlation with computed tomography.
abstract: Large-screen image intensifier (II) photofluorography was compared with full-size screen-film chest radiography in the diagnosis of pulmonary emphysema in 84 patients. Photospot films and conventional radiographs were interpreted independently by three radiologists. Computed tomography (CT) was used as an independent reference technique, and diagnostic performance of chest radiography in various CT patterns of emphysema was evaluated. The difference in diagnostic sensitivity for emphysema in favor of conventional chest radiography over photofluorography (0.65 versus 0.56) was statistically significant (p less than 0.05). Specificity of the imaging modalities was equal: 0.78 in full-size films and 0.77 in photospot films. All CT patterns of emphysema had great false negative response rates in chest radiography, which is an inaccurate technique for the diagnosis of emphysema. CT is required for reliable radiologic evaluation of emphysema.
authors.affiliation: Department of Diagnostic Radiology, Kuopio University Central Hospital, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Manninen
authors.forename: K
authors.initials: K
authors.lastname: Partanen
authors.forename: S
authors.initials: S
authors.lastname: Soimakallio
authors.forename: H
authors.initials: H
authors.lastname: Rytkönen
mesh_terms: D004646:Emphysema / Q000000981:diagnostic imaging*; D005188:False Negative Reactions; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D010779:Photofluorography; D011786:Quality Control; D014057:Tomography, X-Ray Computed