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. 2023 Jun 15;165(8):2189–2195. doi: 10.1007/s00701-023-05659-7

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Fig. 4 — Intraoperative programming and preparation. A The intraoperative CT 3D image is fused with preoperative planning, and B coordinates are changed from AC-PC reference to frame-based reference. Adjustments are needed to entire figures or 0.5 decimals. C The field is draped, leaving the laterals of the frame uncovered. D The coordinates are transferred to the stereotactic frame