Aim: To evaluate the image quality of an asymmetric film-screen combination (a-FSC), a conventional screen-film combination (FSC) at speed class 200, a lung filter, and digital luminescence radiograms in detecting pulmonary nodules. Methods: Detail perception studies were carried out with an anthropomorphic phantom. The image systems were exposed under standardised conditions with 125 KVp. The systems' perception efficiency was evaluated on the basis of 12.240 single observations with ROC analysis. Results: In the overall evaluation the a-FSC and the filter achieved equally high assessments of 0.878 ± 0.018 and 0.860 ± 0.21 respectively p > 0.05). The 200 speed FSC and the storage phosphor screen radiograms did not differ significantly. In the mediastinum all the tested systems were clearly superior to the 200 speed FSC (p < 0.05). In the lung fields on the other hand the 200 speed system was given a high assessment of 0.866 ± 0.026. The a-FSC had slight advantages over the lung filter and the digital imaging modes (p > 0.05). Conclusions: The a-FSC and digital luminescence radiograms provide significantly more diagnostic information in the mediastinum, together with high detail detectability in the lung fields and without requiring additional dosage.
|Translated title of the contribution||Detection of pulmonary modules with a lung filter, an asymmetric screen-film-combination and storage phosphor radiography|
|Number of pages||7|
|Publication status||Published - 1997|
ASJC Scopus subject areas
- Pulmonary and Respiratory Medicine