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Real-time motion tracking in image-guided oral implantology

✍ Scribed by Xiaojun Chen; Yanping Lin; Yiqun Wu; Chengtao Wang

Publisher
Wiley (Robotic Publications)
Year
2008
Tongue
English
Weight
344 KB
Volume
4
Category
Article
ISSN
1478-5951

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✦ Synopsis

Abstract

Background

As a crucial part of an image‐guided oral implantology system (IGOIS), intra‐operative motion tracking is important in terms of accuracy and efficiency. The tracking method, including the relevant algorithms, is described in detail.

Methods

The conventional CAD method is proposed to build the three‐dimensional (3D) surgical instrument models. With the application of the optical tracking device, calibration can be carried out. Three tracking algorithms are presented, and ‘tracking based on registration of RCS to VCS’ is regarded as the most efficient of these. In order to evaluate the tracking accuracy, the landmark coordinates are respectively obtained through pre‐operative CT data and intra‐operative tracking, so that the deviation can be calculated.

Results

The result data reveal that FRE and TRE of IGOIS are, respectively, 0.27 ± 0.11 mm and 0.77 ± 0.04 mm through a phantom experiment.

Conclusions

The experiment demonstrates the accuracy and reliability of IGOIS. The tracking method can be extended to other surgical navigation systems in various areas. Copyright © 2008 John Wiley & Sons, Ltd.

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