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A comparative study of input devices for digital slide navigation.

Jesper Molin¹, Claes Lundström², Morten Fjeld³

¹Centre for Medical Image Science and Visualization, Linköping University; Chalmers University of Technology, Gothenburg, Sweden.

Journal of Pathology Informatics

|March 17, 2015

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Digital pathology adoption is hindered by input device integration. A study found computer mice and 6 degrees-of-freedom (6DOF) navigators reduced pathologist workload compared to touchpads, with a preference for the 6DOF navigator.

Area of Science:

Digital Pathology
Human-Computer Interaction
Medical Informatics

Background:

Seamless integration of input devices for digital slide navigation is crucial for pathologist adoption of digital pathology.
Current digital slide navigation often mimics traditional microscope interaction, potentially limiting efficiency.

Purpose of the Study:

To compare the impact of different input devices on diagnostic time, perceived workload, and user preference in digital pathology.
To identify optimal input device strategies for enhancing pathologist experience and efficiency.

Main Methods:

Six pathologists evaluated nine digital pathology cases using three input devices: a standard computer mouse, a 6 degrees-of-freedom (6DOF) navigator, and a touchpad.
Data collected included time to diagnose and perceived workload using standardized metrics.

Keywords:

Digital pathology multi-scale navigation usability workload

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Main Results:

No significant difference in time to diagnose was observed across the three input devices.
Pathologists reported significantly lower perceived workload when using the computer mouse and the 6DOF navigator compared to the touchpad (P < 0.05).
Five out of six participants preferred the 6DOF navigator, with the touchpad being the least preferred.

Conclusions:

Input device choice significantly impacts pathologist workload in digital pathology, with non-traditional devices like the 6DOF navigator offering potential benefits.
Optimizing digital slide navigation interfaces beyond traditional microscope paradigms is recommended to reduce user workload and improve adoption rates.