Fig. 1
a The bilateral prostheses phantom that has two metallic objects in it. b The image of the bilateral prostheses phantom reconstructed by filtered backprojection without any metal artifact correction. c The dental phantom that has two metallic objects in it. d The image of the dental phantom reconstructed by filtered backprojection without any metal artifact correction. The ROI A and B in a and b are the regions for the evaluation of metal artifact correction