title: [Digital radiography].
abstract: 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.
mesh_terms: D000818:Animals; D001331:Automation; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D002113:Calcification, Physiologic; D003720:Densitometry; D011859:Radiography; D013679:Technology, Radiologic
vernacular_title: Radiografia digitale.