Ansgar C. Malich MD, Presenter: Nothing to Disclose

Dirk Macher MD, Abstract Co-Author: Nothing to Disclose

Andreas Ulrich MD, Abstract Co-Author: Nothing to Disclose

Arnhild Kott MD, Abstract Co-Author: Nothing to Disclose

To evaluate the association of DXR vs. DXA as the currently accepted gold standard technology in bone densitometry applied at several locations.

100 patients underwent a DXA-calculation at spine, hip, forearm, ultrasdistal forearm, 33% forearm using DPX-IQ (Lunar) and a digital radiogrammetry (Pronosco, V2) on existing X-ray examinations of the hand/forearm. Resulting BMD values were matched, metacarpal index, porosity index as well as age, body mass index and other anthropometric data included.

A highly significant correlation coefficient was observed between DXA (overall radius) and DXR (r=0.81, p<.001). Highly significant correlations were found between DXR and all DXA values obtained including central and peripher localizations: DXA hip r=0.54, DXA ultradistal forearm: r=0.77; radial 33%: 0.80; spine: r=0.48. These correlations are neither influenced by body mass index nor sex nor age nor existing severe inflammatory or bone diseases. Porosity Index was characterized by a subtle correlation to DXA-values. Correlation of peripher and central DXA values were similar to DXR ranging from 0.49 to 0.68.

DXR might be applicable to diagnose regional bone mineral loss on X-rays performed of the hand with a similar diagnostic power as peripher DXA-technologies and thus might replace peripher DXA-calculations due to its character as a CAD-application without the need of additional radiation for analysis process.

DXR might be applicable to diagnose regional mineral loss on X-rays performed of the hand with a similar diagnostic power as peripher DXA-technologies

Malich, A, Macher, D, Ulrich, A, Kott, A, Can Digital Radiogrammetry Be Used as a Semiscreening CAD-tool on Every Traumatologically-induced X-ray of the Hand for Osteodensitometry? Comparison to DXA-values at Several Localizations.  Radiological Society of North America 2008 Scientific Assembly and Annual Meeting, February 18 - February 20, 2008 ,Chicago IL. http://archive.rsna.org/2008/6021912.html