Effects of powder morphology and particle size on CT number estimates
نویسندگان
چکیده
We performed experiments and data analysis to determine how powder morphology and particle size affect X-ray attenuation (CT number or CTN). These experiments were performed on a CT system with an isotropic resolution of (0.15 mm), and an endpoint energy of 160kV. Powders with effective atomic number (Ze) within ±0.2 of water were found to have CTN more directly related to electron density than to bulk physical density. Variations in mean particle size ranging between 2 m and 44 m were found to have no effect on specimen mean CTN.
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