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Reconstruction images of the head phantom. (a, d, g) Virtual monochromatic image from spectral scan, (b, e, h) traditional-like image from spectral scan, and (c, f, i) traditional-like image from traditional scan. The corresponding metal fillings are (a, b, c) Co-Cr crown, (d, e, f) Ti implant 4.1 mm, and (g, h, i) two Ti implants with 3.3 and 4.1 mm.
