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The purpose of this study is to evaluate the microcalcifications (MCs) detection capability of the BCT (Breast Computed Tomograph) scanner developed at by our group. The studies have been conducted using a breast phantom with MC inclusions simulated by small fragments of egg-shell (dimensions 350??450 ??m). The MCs are positioned in a cluster configuration in regions of interest (ROI) with a diameter...
We report on tests of a radionuclide imaging system for in vivo investigations in small animals with low-energy photons as from 125I (27-35 keV). Imaging optics features a high-resolution coded aperture mask and a fine pitch hybrid pixel detector (silicon 300-mum or 700-mum thick, or CdTe 1 mm thick) of the Medipix2 series (55 mum pitch, 256 x 256 pixels). The coded aperture had 480 70-mum holes in...
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