Fig. 4From: Gaussian diffusion sinogram inpainting for X-ray CT metal artifact reductionThe mean pixel value and the standard deviation in different ROIs for the two phantoms. The top one are the results of the jaw phantom and the bottom one belong to the hip phantom. Eight RIOs are defined in Figs. 2a and 3a for two phantoms, and each ROI contains 20 × 20 pixelsBack to article page