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Biomedical Engineering and Bioengineering Commons

Open Access. Powered by Scholars. Published by Universities.®

2013

Marquette University

Breast imaging

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Full-Text Articles in Biomedical Engineering and Bioengineering

Experimental Study Of Optimal Energy Weighting In Energy-Resolved Ct Using A Czt Detector, Franco Rupcich, Taly Gilat-Schmidt Jan 2013

Experimental Study Of Optimal Energy Weighting In Energy-Resolved Ct Using A Czt Detector, Franco Rupcich, Taly Gilat-Schmidt

Biomedical Engineering Faculty Research and Publications

Recent advances in energy-resolved CT can potentially improve contrast-to-noise ratio (CNR), which could subsequently reduce dose in conventional and dedicated breast CT. Two methods have been proposed for optimal energy weighting: weighting the energy-bin data prior to log normalization (projection-based weighting) and weighting the energy-bin data after log normalization (image-based weighting). Previous studies suggested that optimal projection-based and image-based energy weighting provide similar CNR improvements for energy-resolved CT compared to photon-counting or conventional energy-integrating CT. This study experimentally investigated the improvement in CNR of projection-based and image-based weighted images relative to photon-counting for six different energy-bin combinations using a bench ...