17 March 2006 Characterization of a new generation of computed radiography system based on line scanning and phosphor needles
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Abstract
A new generation CR system that is based on phosphor needles and that uses a digitizer with line scan technology was compared to a clinically used CR system. Purely technical and more clinically related tests were run on both systems. This included the calculation of the DQE, signal-to-noise and contrast to noise ratios from Aluminum inserts, contrast detail analysis with the CDRAD phantom and the use of anthropomorphic phantoms (wrist, chest and skull) with scoring by a radiologist. X-ray exposures with various dose levels and 50kV, 70kV and 125kV were acquired. For detector doses above 0.8 μGy, all noise related measurements showed the superiority of the new technology. The MTF confirmed the improvement in sharpness: between 1 and 3 lp/mm increases ranged from 20 to 50%. Further work should be devoted to the determination of the required dose levels in the plate for the different radiological applications.
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Octavian Dragusin, Frank Rogge, Herman Pauwels, Guy Marchal, Hilde Bosmans, "Characterization of a new generation of computed radiography system based on line scanning and phosphor needles", Proc. SPIE 6146, Medical Imaging 2006: Image Perception, Observer Performance, and Technology Assessment, 614613 (17 March 2006); doi: 10.1117/12.655494; https://doi.org/10.1117/12.655494
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