Digital luminescence radiography using a chest phantom. Comparison between radiographs displayed on monitor and hard-copy.
Ninety-eight digital radiographs of a chest phantom with simulated tumors in the mediastinum and left lung and a pneumothorax-simulation in the right hemithorax were compared with the corresponding examinations saved on optical disk and viewed on a 1,000-line monitor. The examinations were reviewed by 7 radiologists with different experience, and receiver operating characteristic (ROC) curves were constructed. There was no significant difference between the hard-copy and the monitor results. A significant interobserver difference was seen only with the low attenuating 6 mm "tumor" and then only between the observer with the highest and the one with the lowest scores.
Kehler
M
M
Department of Diagnostic Radiology, University Hospital, Lund, Sweden.
Albrechtsson
U
U
Arnadóttir
E
E
Ebbesen
A
A
Hochbergs
P
P
Lundin
A
A
Lyttkens
K
K
Kheddache
K
K
Månsson
L G
LG
Angelhed
J E
JE
D006801:Humans; D008163:Luminescent Measurements; D008961:Models, Structural; D011030:Pneumothorax / Q000000981:diagnostic imaging; D012372:ROC Curve; D011856:Radiographic Image Enhancement / Q000295:instrumentation*; D013902:Radiography, Thoracic / Q000379:methods*; D013899:Thoracic Neoplasms / Q000000981:diagnostic imaging