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  • Vpliv dotrajanosti razvijalca na natančnost digitalne subtrakcijske radiografije = Influence of developer exhaustion on accuracy of digital subtraction radiography
    Fidler, Aleš, 1973- ...
    Accuracy of digital subtraction radiography is influenced by geometric and brightness similarity of radiographs, which depend on projection geometry, exposure conditions and film processing. The aim ... of the study was to evaluate the influence of developer exhaustion on accuracy of digital substraction radiography. Six objects, incorporating a section of dry human mandible, were radiographed with four exposure times. Baseline films were processed in fresh developer, whereas follow-up films were processed in fresh and increasingly exhausted developer (i.e. 1, 2 or 3 weeks old). Bone loss and bone gain were computer simulated in 17 regions of interest on baseline radiographs. Volume changes in mineralization were measured in substracted images. Due to exhausted developer, bone loss was relatively underesimated by 6.6 to 16.5% (p<0.05), whereas bone gain was relatively overestimated by 9.7 to 16.7% (p<0.05). This study demonstrates that films for digital substraction radiography should be processed in fresh developer, otherwise error might be introduced.
    Vir: Zobozdravstveni vestnik. - ISSN 0044-4928 (Letn. 55, št. 2/3, 2000, str. 67-72)
    Vrsta gradiva - članek, sestavni del
    Leto - 2000
    Jezik - slovenski
    COBISS.SI-ID - 11749849

vir: Zobozdravstveni vestnik. - ISSN 0044-4928 (Letn. 55, št. 2/3, 2000, str. 67-72)

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