Austin S Rose1, Hyounghun Kim2, Henry Fuchs2, Jan-Michael Frahm2. 1. Department of Otolaryngology-Head and Neck Surgery, University of North Carolina, Chapel Hill, North Carolina, U.S.A. 2. Department of Computer Science, University of North Carolina, Chapel Hill, North Carolina, U.S.A.
Abstract
OBJECTIVES/HYPOTHESIS: Augmented reality (AR) allows for the addition of transparent virtual images and video to one's view of a physical environment. Our objective was to develop a head-worn, AR system for accurate, intraoperative localization of pathology and normal anatomic landmarks during open head and neck surgery. STUDY DESIGN: Face validity and case study. METHODS: A protocol was developed for the creation of three-dimensional (3D) virtual models based on computed tomography scans. Using the HoloLens AR platform, a novel system of registration and tracking was developed. Accuracy was determined in relation to actual physical landmarks. A face validity study was then performed in which otolaryngologists were asked to evaluate the technology and perform a simulated surgical task using AR image guidance. A case study highlighting the potential usefulness of the technology is also presented. RESULTS: An AR system was developed for intraoperative 3D visualization and localization. The average error in measurement of accuracy was 2.47 ± 0.46 millimeters (1.99, 3.30). The face validity study supports the potential of this system to improve safety and efficiency in open head and neck surgical procedures. CONCLUSIONS: An AR system for accurate localization of pathology and normal anatomic landmarks of the head and neck is feasible with current technology. A face validity study reveals the potential value of the system in intraoperative image guidance. This application of AR, among others in the field of otolaryngology-head and neck surgery, promises to improve surgical efficiency and patient safety in the operating room. LEVEL OF EVIDENCE: 2b Laryngoscope, 129:S1-S11, 2019.
OBJECTIVES/HYPOTHESIS: Augmented reality (AR) allows for the addition of transparent virtual images and video to one's view of a physical environment. Our objective was to develop a head-worn, AR system for accurate, intraoperative localization of pathology and normal anatomic landmarks during open head and neck surgery. STUDY DESIGN: Face validity and case study. METHODS: A protocol was developed for the creation of three-dimensional (3D) virtual models based on computed tomography scans. Using the HoloLens AR platform, a novel system of registration and tracking was developed. Accuracy was determined in relation to actual physical landmarks. A face validity study was then performed in which otolaryngologists were asked to evaluate the technology and perform a simulated surgical task using AR image guidance. A case study highlighting the potential usefulness of the technology is also presented. RESULTS: An AR system was developed for intraoperative 3D visualization and localization. The average error in measurement of accuracy was 2.47 ± 0.46 millimeters (1.99, 3.30). The face validity study supports the potential of this system to improve safety and efficiency in open head and neck surgical procedures. CONCLUSIONS: An AR system for accurate localization of pathology and normal anatomic landmarks of the head and neck is feasible with current technology. A face validity study reveals the potential value of the system in intraoperative image guidance. This application of AR, among others in the field of otolaryngology-head and neck surgery, promises to improve surgical efficiency and patient safety in the operating room. LEVEL OF EVIDENCE: 2b Laryngoscope, 129:S1-S11, 2019.
Authors: Axel Sahovaler; Harley H L Chan; Tommaso Gualtieri; Michael Daly; Marco Ferrari; Claire Vannelli; Donovan Eu; Mirko Manojlovic-Kolarski; Susannah Orzell; Stefano Taboni; John R de Almeida; David P Goldstein; Alberto Deganello; Piero Nicolai; Ralph W Gilbert; Jonathan C Irish Journal: Front Oncol Date: 2021-11-01 Impact factor: 6.244
Authors: Tomi Timonen; Matti Iso-Mustajärvi; Pia Linder; Antti Lehtimäki; Heikki Löppönen; Antti-Pekka Elomaa; Aarno Dietz Journal: Eur Arch Otorhinolaryngol Date: 2020-09-22 Impact factor: 2.503