C-OnSite is an enhancement to the Renaissance surgical guidance system designed to offer low-radiation, intra-operative 3D verification of implant placement based on imaging from any standard 2D C-Arm. C-OnSite utilizes imagery from existing 2D C-Arms, which are standard equipment in spine operating rooms. A 15 second C-Arm scan is performed after screw positioning, and these images are fused with high-quality images from the preoperative CT. This produces an intra-operative 3D axial view of the spine, showing the exact location of each pedicle screw and its relationship to the spinal canal, without additional, expensive intra-operative 3D systems for spine surgery. So if a repositioning is necessary it can be done immediately, rather than as a revision case a few days later. The process requires no more than five to 10 minutes of additional OR time.
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