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Instrument-mounted displays for reducing cognitive load during surgical navigation.

Marc Herrlich1,2,3, Parnian Tavakol4,5, David Black4,6,7

  • 1Creative Unit: Intra-operative Information, University of Bremen, Bremen, Germany. herrlich@eit.uni-kl.de.

International Journal of Computer Assisted Radiology and Surgery
|February 25, 2017
PubMed
Summary

Instrument-mounted displays for surgical navigation significantly improve usability and reduce cognitive load compared to traditional monitors. This approach offers direct, in-view guidance, enhancing the operator experience during needle-based interventions.

Keywords:
Cognitive loadImage-guided surgeryIntra-operative navigationTool-mounted displayVisual attentionVisual feedback

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Area of Science:

  • Medical technology
  • Surgical navigation systems
  • Human-computer interaction

Background:

  • Surgical navigation systems typically use operating room monitors, posing placement challenges in crowded environments.
  • Operators often divide attention between the navigation system and the surgical site (situs).

Purpose of the Study:

  • To develop and evaluate an instrument-mounted display for needle-based interventions, providing direct navigational feedback.
  • To reduce the cognitive load and attention-switching required by operators.

Main Methods:

  • A smartwatch display was mounted onto a surgical instrument to provide visual guidance.
  • A novel crosshair metaphor was adapted for the limited display space.
  • An empirical user study compared the instrument-mounted display to a traditional monitor setup.

Main Results:

  • The instrument-mounted display showed significant improvements in cognitive load, user preference, and overall usability.
  • Performance in terms of time and accuracy was comparable to using a standard monitor.

Conclusions:

  • Instrument-mounted displays are feasible and offer substantial benefits for surgical navigation.
  • This technology has the potential to complement standard setups, enhancing usability and reducing cognitive demands.