AR Spine Registration for Accurate Vertebra Level Identification

The patent transitions from 2D scout views to 3D visualizations of the spine. The system generates three-dimensional representations of vertebral bodies and landmarks, allowing surgeons to view anatomical structures from multiple angles and depths. This dimensional enhancement provides precise vertebra level identification without requiring multiple 2D x-ray images, resolving the contradiction between measurement precision and device complexity.

The patent creates virtual copies of the patient's spine based on pre-acquired imaging data (CT or MRI). These digital twins or virtual models are then overlaid onto the patient's actual anatomy during surgery using augmented reality. This copying approach eliminates the need for additional physical x-ray imaging while maintaining high measurement precision, as the virtual models can be manipulated and viewed from any angle without radiation exposure.

The patent performs all necessary imaging and 3D model generation during the preoperative planning phase. High-quality CT or MRI scans are acquired before surgery, and comprehensive 3D visualizations are created in advance. During the actual surgery, surgeons only need to use the pre-prepared augmented reality overlays, eliminating the need for additional intraoperative x-ray imaging. This preliminary action ensures measurement precision is achieved before surgery without exposing patients to repeated radiation during the procedure.

The patent replaces the mechanical x-ray imaging system with a computer-based augmented reality system. Instead of using physical x-ray machines to verify vertebra position during surgery, the system uses pre-acquired imaging data processed into 3D visualizations that are overlaid onto the patient's anatomy. This substitution eliminates radiation exposure during surgery while maintaining or improving measurement precision through the capabilities of digital imaging and augmented reality display.