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Ranging accuracy test of the sonic microstereometric system

G A Horstmann1, H F Reinhardt

  • 1Neurosurgical University Clinic, Kantonsspital, Basle, Switzerland.

Neurosurgery
|April 1, 1994
PubMed
Summary

A new ultrasonic 3D ranging system accurately localizes surgical tools in open stereotactic brain surgery. Laboratory tests confirm its precision, making it suitable for microsurgery ranging tasks.

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Area of Science:

  • Neurosurgery
  • Medical Imaging
  • Surgical Technology

Background:

  • Accurate localization of surgical instruments is critical in stereotactic brain surgery.
  • Existing localization systems may have limitations in precision or applicability to handheld tools.

Purpose of the Study:

  • To introduce and evaluate a novel ultrasonic-based, three-dimensional (3D) ranging system.
  • To assess the system's accuracy and suitability for localizing small handheld surgical tools in open stereotactic procedures.

Main Methods:

  • Development of an ultrasonic-based 3D ranging system.
  • Extensive laboratory testing using thousands of measurement cycles.
  • Validation with a Computer Numerical Control (CNC)-based measuring table.

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Main Results:

  • Typical accuracy in a single direction was 0.4 mm or better.
  • The spatial accuracy vector was measured at 0.897 mm (n=2312).
  • Test-retest accuracy was consistently around 0.4 mm.

Conclusions:

  • The developed ultrasonic ranging system demonstrates high accuracy.
  • The system's precision meets the requirements for ranging tasks in open stereotactically guided microsurgery.