Currently, when spine surgeons operate on a patient’s spine in the operating room, they use surface landmarks and X-rays to determine the correct level. The use of X-ray for spinal surgery adds additional time and radiation risks to the procedure and is typically only useful for the lumbar and cervical spine. The thoracic spine is more prone to wrong-level surgery due to shadowing effects from other parts of the body that can be shown on scans. Current methods to determine the correct level are too invasive, costly, or inadequate. This project proposes a non-invasive, cost-friendly device that will determine the correct spinal incision site and minimize radiation exposure to the patient.