Abstract
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 × 1 024 pixel resolution and the second of images with 2 048 × 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 × 1 024 matrix and 0.983 with the 2 048 × 2 048 matrix.
In the fibrosis group the average area under the individual ROC curve was 0.877 with the 1 024 × 1 024 matrix and 0.831 with the 2 048 × 2 048 matrix.
The results suggest that the 1 024 × 1 024 matrix is adequate in the detection of pneumothoraces and fibrosis.
The images were interpreted by 5 radiologists during their duty shift. The first reading session consisted of images with 1 024 × 1 024 pixel resolution and the second of images with 2 048 × 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 × 1 024 matrix and 0.983 with the 2 048 × 2 048 matrix.
In the fibrosis group the average area under the individual ROC curve was 0.877 with the 1 024 × 1 024 matrix and 0.831 with the 2 048 × 2 048 matrix.
The results suggest that the 1 024 × 1 024 matrix is adequate in the detection of pneumothoraces and fibrosis.
| Original language | English |
|---|---|
| Pages (from-to) | 37-40 |
| Journal | Acta Radiologica |
| Volume | 36 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1995 |
| MoE publication type | A1 Journal article-refereed |