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Fig. 5C —Artifact-free digital tomography images of temporal bone specimen. Co = cochlea, EAC = external auditory canal, IAC = internal auditory canal. Image shows platinum-band polytetrafluoroethylene (Teflon, DuPont) piston (blue arrow) (Platinum-Teflon Prosthesis Type Schuhknecht [5.5 x 0.6 mm], Heinz Kurz GmbH) at level close to stapes footplate. Vestibule (yellow arrow) and tympanic segment of facial canal (black arrow) are also visible.