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[Imaging properties of digital image-intensifier radiography compared to the conventional x-ray technic for chest
W Dölken1, T Krahe, P Landwehr
1Institut für Röntgendiagnostik, Universität Würzburg.
Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|January 1, 1989
Abstract:
Projection properties of a digital fluorographic system for chest examinations are examined using varying test phantoms. A maximal geometric distortion of +14% between the centre and the periphery of the image intensifier and a maximal spatial resolution of 2.6 LP/mm is found. Contrast detail diagrams are used to show the combination of spatial and contrast resolution of the system. Compared with diagrams for conventional radiographic systems there is a significant loss of resolution.