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Related Experiment Videos

Neuronavigation--first experiences with three different commercially available systems

C R Wirtz1, M Knauth, S Hassfeld

  • 1Neurochirurgische Universitätsklinik, Ruprecht-Karls-Universität Heidelberg.

Zentralblatt Fur Neurochirurgie
|May 13, 1998
PubMed
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Neuronavigation, or frameless stereotaxy, utilizes various devices for surgical localization. This study evaluated three systems, finding comparable accuracy but differing intraoperative handling characteristics for neurosurgical procedures.

Area of Science:

  • Neurosurgery
  • Medical Devices
  • Image-Guided Therapy

Background:

  • Neuronavigation, also known as frameless stereotaxy, is increasingly adopted in neurosurgery.
  • Various localization methods and devices have been developed to support surgical procedures.
  • Evaluating the performance and usability of these navigational tools is crucial for clinical application.

Purpose of the Study:

  • To assess the efficacy and characteristics of different neuronavigational devices in clinical practice.
  • To compare the accuracy, registration time, and intraoperative handling of three distinct neuronavigation systems.

Main Methods:

  • A total of 152 neurosurgical procedures were performed using neuronavigation.
  • Three systems were evaluated: Viewing Wand (VW), SPOCS, and microscope-integrated MKM.

Related Experiment Videos

  • Data collected included preoperative registration time, accuracy (RMS error), and intraoperative handling feedback.

    • Main Results:

    • Mean registration times were 23 min (VW), 21 min (SPOCS), and 27 min (MKM).
    • Mean accuracy (RMS error) was 2.9 mm (VW), 3.3 mm (SPOCS), and 3.1 mm (MKM).
    • The VW was robust but bulky; SPOCS was flexible but required clear visibility; MKM needed user training.

    Conclusions:

    • All three neuronavigation systems demonstrated acceptable accuracy for neurosurgical procedures.
    • Device selection may depend on specific procedural needs and surgeon preference regarding handling and workflow.
    • Further evaluation of intraoperative usability and long-term clinical impact is warranted.