Experiences with a teleradiology system in pulmonary diseases.
Chest radiographs of 43 patients were digitized and sent from Paimio Hospital to Turku University Central Hospital. Fifteen of the patients had a pneumothorax, 12 had interstitial lung disease and 16 were controls. The images were interpreted by 5 radiologists during their duty shift. The first reading session consisted of images with 1,024 x 1,024 pixel resolution and the second of images with 2,048 x 2,048 matrix followed by the original chest radiographs. ROC studies were performed from the answers based on a 5-point confidence scale. In the pneumothorax group the average area under the individual ROC curve was 0.928 with the 1,024 x 1,024 matrix and 0.983 with the 2,048 x 2,048 matrix. In the fibrosis group the average area under the individual ROC curve was 0.877 with the 1,024 x 1,024 matrix and 0.831 with the 2,048 x 2,048 matrix. The results suggest that the 1,024 x 1,024 matrix is adequate in the detection of pneumothoraces and fibrosis.
Department of Diagnostic Radiology, University Hospital, Turku, Finland.
L
L
Korsoff
T
T
Kallio
M
M
Kormano
J
J
Heinilä
D005069:Evaluation Studies as Topic; D006801:Humans; D017563:Lung Diseases, Interstitial / Q000000981:diagnostic imaging* / Q000453:epidemiology; D015588:Observer Variation; D011030:Pneumothorax / Q000000981:diagnostic imaging* / Q000453:epidemiology; D012372:ROC Curve; D011856:Radiographic Image Enhancement; D015203:Reproducibility of Results; D017216:Telemedicine