Computer-assisted ENT surgery using augmented reality: Preliminary results on the CAESAR project

R. J. Lapeer, P. Chios, G. Alusi, A. D. Linney, M. K. Davey, A. C. Tan

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)


The ‘Computer Assisted ENT Surgery using Augmented Reality’ (CAESAR) project aims to improve ENT surgical procedures through augmentation of the real operative scene during surgery: a virtual scene, which shows structures that are normally hidden to the eye of the surgeon, is superimposed onto the real scene. The main distinction of this project as opposed to previous work in the field is to create a hierarchical and stepwise implemented system which allows operations such as calibration, tracking and registration to be assessed on an individual basis. This allows us to compare different alternatives for each operation and eventually apply the best solution without interfering with the performance of other parts of the system. In this paper, we present a framework for the alignment of the objects/subject in the real and virtual operating environment before the onset of surgery, and test its performance on a phantom skull. The operations involved are thus based on a static system and include calibration of the stereo microscope and registration of the virtual patient (as reconstructed from CT data) with the real patient. The final alignment of all objects in the real and virtual operating scene is assessed by cumulating maximum errors of each individual step.
Original languageEnglish
Title of host publicationMedical Image Computing and Computer-Assisted Intervention – MICCAI 2000
EditorsScott L. Delp, Anthony M. DiGoia, Branislav Jaramaz
PublisherSpringer Berlin / Heidelberg
Number of pages11
ISBN (Print)978-3-540-41189-5
Publication statusPublished - 2000
EventThird International Conference - Pittsburgh, United States
Duration: 11 Oct 200014 Oct 2000

Publication series

NameLecture Notes in Computer Science
PublisherSpringer Berlin / Heidelberg


ConferenceThird International Conference
Country/TerritoryUnited States

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