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[Comparative accuracy assessment between a mechanical (viewing wand) and a laser-controlled microscopic positioning
M Hilbert1, R Marmulla, J Strutz
1Klinik und Poliklinik für Hals-, Nasen-, Ohrenheilkunde, Universität Regensburg.
HNO
|April 16, 1998
Summary
The new laser-guided MKM navigation system offers superior precision (0.27 mm) compared to the mechanical Viewing Wand (0.48-1.8 mm) for surgical navigation. Even after referencing CT data, the MKM system maintained higher accuracy.
Area of Science:
- Medical imaging and surgical navigation technologies.
Background:
- Accurate navigation is critical in minimally invasive surgery.
- Existing mechanical navigation systems have limitations in precision and accuracy.
Purpose of the Study:
- To compare the precision of a novel laser-guided navigation system (MKM) against a mechanical system (Viewing Wand).
- To evaluate system deviations and errors from data acquisition and referencing.
Main Methods:
- Performed 2,000 measurements on geometric test models using CT scans.
- Assessed technical accuracy of both MKM and Viewing Wand systems.
- Quantified measurement errors after referencing CT data to the original object.
Main Results:
- The mechanical Viewing Wand system showed accuracy varying from 0.48 mm to 1.8 mm.
- The laser-guided MKM system demonstrated consistent precision of 0.27 mm across all areas.
- Post-referencing, measurement errors were 0.83 mm for Viewing Wand and 0.49 mm for MKM.
Conclusions:
- The laser-guided MKM system provides significantly higher precision than the mechanical Viewing Wand.
- The MKM system offers improved accuracy in surgical navigation, even after CT data referencing.