Fig. 3
From: Anatomic modeling using 3D printing: quality assurance and optimization
CT images of a patient with dental fillings (a) and that after application of a metal artifact reduction algorithm (b). Pixels in blue color were results of thresholding segmentation, aiming to separate bone from soft tissues. Metal artifacts contaminated the segmentation in the original images (a) while was removed in the image with metal artifact reduction algorithm (b)