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Cadaver setup emulating the intraoperative setup for CBCT-guided TORS. (a) Prototype mobile C-arm for intraoperative CBCT. (b) Cadaver mounted in a CT-compatible frame using nylon strings to retract the jaw and tongue. (c) A foam pad separated the tongue slightly from the lower lip to simplify segmentation. (d) Six Teflon spheres attached on the surface of the tongue. Eight additional spheres were implanted within the tongue (figure 4).
