Sensory Perception & Interaction Research Group

University of British Columbia

Full citation: 
Oram, L., MacLean, K.E., Kruchten, P., and Forster, B., “Crafting Diversity in Radiology Image Stack Scrolling: Control and Annotations,” in Proc. of Designing Interactive Systems (DIS), Vancouver, pp. 567-576, 2014.
To make a single diagnosis, today's radiologists must examine thousands of images; yet little effort has been put into refining this time-consuming, repetitive task. Meanwhile, automatic or radiologist-generated annotations may impact how radiologists navigate image stacks as they review lesions of interest. Observation and/or interviews of 19 radiologists revealed that stack scrolling dominated the resulting task examples. We iteratively crafted and obtained radiologist feedback for a variety of prototypes, then evaluated their scrolling and annotation-review support for lay users. With a simplified stack seeded with correct / incorrect annotations, we compared the effect of four scrolling techniques (traditional scrollwheel and click-and-drag, plus sliding-touch, and tilt rate control) and visual vs. haptic annotation cues on scrolling dynamics, detection accuracy and subjective factors. Scrollwheel was fastest overall, and combined visual / haptic annotation cues sped target-finding relative to either modality alone. We share insights on integrating our findings into radiologist practice.
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