Augmented Reality-Based Visualization of a Resected Tumor Specimen

In this research protocol, we expand upon our previously described three-dimensional (3D) scanning protocol with the addition of augmented reality (AR) technology. Surgical margin status remains one of the most important prognostic features in cancers of the head and neck and is one of the few factors under the control of the head and neck surgeon1,2,3. The complex 3D anatomy of the head and neck often creates difficulty for surgeons attempting to relocate a positive or close margin, and prior studies have demonstrated that accuracy in relocating margins following initial resection is suboptimal4,5,6. As a result, oncologic outcomes following re-resection remain poor2,3. This protocol investigates the feasibility and accuracy of AR to guide the re-resection of initial positive or close margins in head and neck oncologic surgery. This technology allows surgeons to replace a 3D scanned virtual hologram of the resected cancer specimen back into the resection bed to improve visualization of re-resection location to adequately clear an initial positive or close margin.  ETHICS DISCLAIMER: This protocol includes the use of cadavers with approval from the Vanderbilt University Medical Center’s Center for Experiential Learning and Assessment. This protocol was performed in compliance with Vanderbilt University Medical Center guidelines for human subjects research under IRB #221733.