Material identification from X-ray images made by energy-differentiation type X-ray line sensor

Abstract

It was confirmed that linear attenuation coefficient and effective atomic number of objects could be identified by X-ray 2D and CT images discriminated by different energy. The differences between theoretical and experimental values of linear attenuation coefficient of each object from Xray images were 0.01-22.6% for carbon, 0.01%-23.1% for acrylic resin, and 0.07-22.1% for aluminum. The effective atomic number of each object from X-ray images was obtained 6.0±0.3 for carbon, 6.48±1.38 for acrylic resin, and 13.0±0.3 for aluminum. But, these differences are large relatively, and it is necessary to perform a further examination for the improvement for practical use of the material identification from X-ray images. © 2009 Springer-Verlag.