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3 May 2002 Importance of optimizing the image processing for different digital x-ray detectors to get as much information as possible from the radiographs
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Abstract
A physical characterization for different modern digital detectors (transparent imaging plate, CsI flat panel detector) as well as of an analogue screen-film system, a selenium based system and a 'normal CR system are presented. The detectable information in radiographs produced with digital systems is strongly dependent on the image processing used. The effect of an optimization of this processing corresponding to the physical parameters of different detectors was evaluated. To do so, VGA1, 2 and MS-ROC3 have been used. All optimizations led to 'better' images concerning the information content which can be used by the radiologist. For the flat-panel detector it led to a reduction of images which must be manually postprocessed and even of repeated radiographs. This was achieved by using an adaptive autowindow algorithm which is able to distinguish between anatomical structures and implants. For another detector the detection of unsharp lung nodules could be improved by far. Information can not be added by image processing, it is only possible to make it better visible. To do so, the optimizing of the processing for each kind of detector is much more important than an optimization concerning different organ programs.
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Christoph Hoeschen, Steffen Reissberg, and Wilfried Doehring M.D. "Importance of optimizing the image processing for different digital x-ray detectors to get as much information as possible from the radiographs", Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002); https://doi.org/10.1117/12.465634
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