Abstract
New digital and analogue techniques for chest imaging were compared with conventional film-screen radiography. The spatial resolution and the detection of pulmonary nodules (FROC-study) were studied in the middle of a chest-phantom with Slot (AMBER)-technique, digital image intensifier radiography, storage phosphor radiography, 100 mm technique, film-screen radiography as well as Slot (AMBER)-technique combined with storage phosphor plate. Seven radiologists of two institutions (Mannheim, Berlin) graded the visibility of anatomical structures and the image quality of 50 patients. The results demonstrated a lower image quality of 100 mm technique and digital image intensifier radiography compared with film-screen radiography. AMBER-technique and storage phosphor radiography were superior to film-screen radiography. The AMBER-technique showed the best results in mediastinum as well as in the retrocardiac and retrodiaphragmal space. The combination of AMBER-technique and storage phosphor plate did not improve the results.
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