Fig. 4From: A metal artifact reduction method for a dental CT based on adaptive local thresholding and prior image generationThe flow chart of the proposed metal artifact reduction method. a, b The streak-free image generation, c, d the metal-free image generation, e the prior image generated by fusion of the two images, f the prior sinogram generated by the forward projection of the prior image, g the identified metal trace in the sinogram, h the corrected sinogram, i the final reconstructed imageBack to article page