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(a)–(b) Attenuation and DPC CT images of joint phantom in water, obtained with a 60 kVp/43 keV mean energy spectrum and the 5.4 μm interferometer at 30° glancing angle, (c)–(d) Attenuation and DPC radiographs of the phantom obtained with a 80 kVp/58 keV mean energy spectrum and the 10 μm interferometer at 10° glancing angle.
