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Comparison of phantom target localisation by frame-based stereotaxy and by the VISLAN system

Colchester, Alan C. F. and Zhao, Jason and Dorward, N. L. and Subsol, Gerard and Thomas, D.G.T. (1997) Comparison of phantom target localisation by frame-based stereotaxy and by the VISLAN system. In: Troccaz, J. and Grimson, E. and Mosges, R., eds. CVRMed-MRCAS'97 First Joint Conference Computer Vision, Virtual Reality and Robotics in Medicine and Medical Robotics and Computer-Assisted Surgery. Lecture Notes In Computer Science . Springer, Berlin, Germany, pp. 501-510. ISBN 978-3-540-62734-0. E-ISBN 978-3-540-68499-2. (doi:10.1007/BFb0029273) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:18358)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1007/BFb0029273

Abstract

The VISLAN system is based on one of the newest developments in optical localiser tracking, where the localiser reflects light shone on it (passive illumination) rather than emitting light. In experiments with a CT-compatible skull phantom we evaluated the VISLAN system in comparison with a widely used stereotactic system, the Cosman-Roberts-Wells frame (Radionics Inc). The mean Euclidean difference in localising points initially defined in CT images was 2.5 mm across a wide range of target positions. We estimated the accuracy of the VISLAN system with the same phantom set up but independently of the stereotactic frame, and showed a mean Euclidean error of 1.0 mm. We concluded that the majority of the discrepancy between the two systems wits accounted for by the inaccuracy of the CRW frame. It would be inappropriate to regard the frame based systems as a satisfactory gold standard for estimating the accuracy of VISLAN. However, frame-based and frameless guidance may be needed in the same operation, and it is important for such systems to be compared.

Item Type: Book section
DOI/Identification number: 10.1007/BFb0029273
Uncontrolled keywords: surgical guidance, optical localiser, stereo video, stereotactic surgery, phantom, evaluation, neurosurgery
Depositing User: T. Nasir
Date Deposited: 25 Oct 2009 10:49 UTC
Last Modified: 16 Nov 2021 09:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/18358 (The current URI for this page, for reference purposes)

University of Kent Author Information

Colchester, Alan C. F..

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