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Proceedings Paper

Characterization of a new generation of computed radiography system based on line scanning and phosphor needles
Author(s): Octavian Dragusin; Frank Rogge; Herman Pauwels; Guy Marchal; Hilde Bosmans
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Paper 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.

Paper Details

Date Published: 17 March 2006
PDF: 9 pages
Proc. SPIE 6146, Medical Imaging 2006: Image Perception, Observer Performance, and Technology Assessment, 614613 (17 March 2006); doi: 10.1117/12.655494
Show Author Affiliations
Octavian Dragusin, Univ. Hospitals KU Leuven (Belgium)
Frank Rogge, Univ. Hospitals KU Leuven (Belgium)
Herman Pauwels, Univ. Hospitals KU Leuven (Belgium)
Guy Marchal, Univ. Hospitals KU Leuven (Belgium)
Hilde Bosmans, Univ. Hospitals KU Leuven (Belgium)


Published in SPIE Proceedings Vol. 6146:
Medical Imaging 2006: Image Perception, Observer Performance, and Technology Assessment
Yulei Jiang; Miguel P. Eckstein, Editor(s)

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