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Fig. 1 | BMC Veterinary Research

Fig. 1

From: Canine atlantoaxial optimal safe implantation corridors – description and validation of a novel 3D presurgical planning method using OsiriX™

Fig. 1

Principles of determination of optimal implant placement using the geometrically centered method. a Example of simplification of a bone corridor into a pyramidal shape (theoretical black lines) using ROI points (in blue) placed in 3D-VR mode. An optimal implant can be positioned using an axis centered within the pyramid (blue dashed line). b This centered axis is determined in 3D-MPR mode using ROI points (in blue) as landmarks and geometrical shapes (dark blue lines) [see Additional file 1 for more details]. D: dorsal; Cd: caudal. ROI points in other colors correspond to different implant sites

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