Digital radiography
Vernazza, G.; Pavanelli, E.; Serpico, S.; Bertolini, C.; Chiabrera, A.; Antognetti, P.F.; Mondani, P.
Minerva Medica 73(49-50): 3491-3494
1982
ISSN/ISBN: 0026-4806 PMID: 7155398 Document Number: 192423
The reliability of radiographical information may be improved by a) standardised radiography (exposure-development); b) transformation of the original image into a densitometric image and equalization with a reference wedge made of Ergal. The linear absorption coefficient of Ergal in terms of photon X energy is almost identical to the average coefficient of the bone mineral matrix; c) processing the densitometric image for additional information. An automatic image analyser controlled by a computer is used. The first osteological results showing the correspondence between the densitometric measurements provided by the analyser and the actual bone mineral content revealed by chemical analysis are presented.