The Cydar EV software produces automated 3D overlays for use in endovascular surgery. The software detects vertebral anatomical information present in live X-ray images and matches ('registers') it to an existing CT scan of the patient in order to determine their precise position. This match then allows a 3D overlay to be generated in the correct position and projection. The Cydar EV software is hosted on cloud high-performance computers in order to accelerate performanceCydar EV works with both flat panel detectors and image intensifiers on fixed and mobile X-ray sets. The Cydar EV Instructions for Use remain the same for all types of X-ray set.Note: Federal law (US) restricts this device to sale by or on the order of a physician.