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Inventi Impact: Biomedical Imaging

Articles

  • Inventi:ebmi/114925/26
    Dual-Energy CBCT Detector Configuration: High-Z Materials for Improving Microcalcification Detection and Characterization in Breast Imaging
    01-Jul-2026 Research 2026 : July-September
    Evangelia Karali, Christos Michail, George Fountos, Nektarios Kalyvas, Ioannis Valais

    This study investigates whether detector materials with an effective atomic number (Zeff), density, and light output higher than cesium iodide (CsI) could provide images of better quality in dual-energy cone beam computed tomography (CBCT) breast examinations. Seven different detector material configurations were applied in a simulated micro-CBCT system using GATE v.9.2.1 (GEANT4 application for tomographic emission). Four breast phantoms, containing microcalcifications of Type I and Type II, were imaged. Planar images and tomographic data were analyzed. Microcalcification CNRs (contrast-to-noise ratios) were calculated for each configuration. CZT (cadmium zinc telluride) and GAGG (gadolinium aluminum gallium garnet) materials show a 3–17% increase in relative HAp (hydroxyapatite)-CNR values towards CsI.

    How to Cite this Article
    Attribution/ CC Compliant Citation: Karali, E.; Michail, C.; Fountos, G.; Kalyvas, N.; Valais, I. Dual-Energy CBCT Detector Configuration: High-Z Materials for Improving Microcalcification Detection and Characterization in Breast Imaging. Mater. Proc. 2025, 26, 12. https://doi.org/10.3390/materproc2025026012 http://creativecommons.org/licenses/by/4.0/ Some formatting elements, header, footer, logos, dates and pagination were modified while adapting this article.
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