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Image-guided surgical microscope with mounted minitracker

Published online by Cambridge University Press:  01 November 2006

M Caversaccio ,
J Garcia-Giraldez ,
M Gonzalez-Ballester  and
G Marti
M Caversaccio
Affiliation:
Department of Otorhinolaryngology – Head and Neck Surgery, Inselspital, MEM Institute for Surgical Technology and Biomechanics, University of Berne, Lausanne, Switzerland
J Garcia-Giraldez
Affiliation:
Department of Otorhinolaryngology – Head and Neck Surgery, Inselspital, MEM Institute for Surgical Technology and Biomechanics, University of Berne, Lausanne, Switzerland
M Gonzalez-Ballester
Affiliation:
Department of Otorhinolaryngology – Head and Neck Surgery, Inselspital, MEM Institute for Surgical Technology and Biomechanics, University of Berne, Lausanne, Switzerland
G Marti
Affiliation:
Swiss Federal Institute of Technology, Lausanne, Switzerland.
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Abstract

A new image-guided microscope using augmented reality overlays has been developed. Unlike other systems, the novelty of our design consists in mounting a precise mini and low-cost tracker directly on the microscope to track the motion of the surgical tools and the patient. Correctly scaled cut-views of the pre-operative computed tomography (CT) stack can be displayed on the overlay, orthogonal to the optical view or even including the direction of a clinical tool. Moreover, the system can manage three-dimensional models for tumours or bone structures and allows interaction with them using virtual tools, showing trajectories and distances. The mean error of the overlay was 0.7 mm. Clinical accuracy has shown results of 1.1–1.8 mm.

Keywords

SurgeryComputer AssistedOtorhinolaryngologic Surgical Procedures
Type
Brief Report
Information
The Journal of Laryngology & Otology , Volume 121 , Issue 2 , February 2007 , pp. 160 - 162
Copyright
2006 JLO (1984) Limited

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