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Related Experiment Videos

Eye movement during computed tomography interpretation: eyetracker results and image display-time implications

D V Beard1, E D Pisano, K M Denelsbeck

  • 1Department of Radiology, University of North Carolina School of Medicine, Chapel Hill 27599-7510.

Journal of Digital Imaging
|November 1, 1994
PubMed
Summary

Stacked displays on low-cost workstations can enable efficient review of multiple computed tomography (CT) studies. Eye-tracking shows stacked displays can match radiologist eye movements for acceptable CT interpretation.

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Area of Science:

  • Radiology and Medical Imaging
  • Human-Computer Interaction
  • Medical Informatics

Background:

  • Stacked displays offer a potential solution for interpreting multiple computed tomography (CT) studies using affordable workstations.
  • A key concern is whether stacked displays can match the speed of radiologist eye movements for efficient image review.

Purpose of the Study:

  • To evaluate the feasibility of stacked displays for multi-study CT interpretation by measuring eye-movement duration.
  • To determine if stacked display technology can support rapid image scrolling comparable to traditional film review.

Main Methods:

  • An electronic eye tracker was used to record radiologist eye-movement durations during CT chest interpretation.
  • Time-motion analysis was performed to assess image display times and interaction efficiency on a stacked display system.

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Main Results:

  • Average duration for adjacent eye movements (sequential image viewing) was recorded at 0.54 seconds.
  • The CT workstation with a stacked approach demonstrated an image display time of 0.2 seconds, achieving next-image display in under 0.4 seconds.

Conclusions:

  • Stacked display technology on low-cost workstations appears capable of facilitating acceptable interpretation of multiple CT and magnetic resonance studies.
  • Further research is needed to address the impact of non-adjacent eye movements and potential effects on radiologist behavior.