title: Computed vs. film-screen magnification radiography of fingers in hyperparathyroidism. An ROC analysis.
abstract: One hundred randomly selected patients with suspected or known hyperparathyroidism were examined in a prospective study of the 2nd and 3rd fingers with film-screen and digital luminescence radiographs using magnification technique. The digital images were displayed on a work-station and printed as hard-copies. Two radiologists evaluated the film-screen images regarding subperiosteal and intracortical resorption and their results were defined as "gold standard" regarding the absence or presence of these changes. Four radiologists evaluated these changes in the 3 image forms and an ROC analysis was performed. Comparing the areas under the ROC curves no significant difference was found between the film-screen images and the 2 digital display forms. These results suggest that currently available digital systems provide adequate diagnostic accuracy for evaluation of subtle skeletal changes.
authors.affiliation: Department of Diagnostic Radiology, University Hospital, Lund, Sweden.
authors.forename: A
authors.initials: A
authors.lastname: Jónsson
authors.forename: P
authors.initials: P
authors.lastname: Hannesson
authors.forename: K
authors.initials: K
authors.lastname: Herrlin
authors.forename: K
authors.initials: K
authors.lastname: Jonsson
authors.forename: R
authors.initials: R
authors.lastname: Andersen
authors.forename: H
authors.initials: H
authors.lastname: Pettersson
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001862:Bone Resorption / Q000000981:diagnostic imaging; D002648:Child; D003626:Data Display; D005260:Female; D005385:Fingers / Q000000981:diagnostic imaging*; D006801:Humans; D006961:Hyperparathyroidism / Q000000981:diagnostic imaging*; D008163:Luminescent Measurements; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D011446:Prospective Studies; D012372:ROC Curve; D011856:Radiographic Image Enhancement; D011858:Radiographic Magnification; D014057:Tomography, X-Ray Computed; D014963:X-Ray Intensifying Screens