Conference proceeding
Direction of an initial saccade depends on radiological expertise
Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol.9037, pp.90371A-90371A-8
03/11/2014
DOI: 10.1117/12.2042828
Abstract
Purpose: To evaluate the role of radiographic details in global impression of chest x-ray images viewed by experts in thoracic and non-thoracic domains. Materials and Methods: The study was approved by IRB. Five thoracic and five non-thoracic radiologists participated in two tachistoscopic (one low pass and one with the entire frequency spectrum, each lasting 270 ms) each containing 50 PA chest radiographs with 50% prevalence of pulmonary nodule. Eye movements were monitored in order to evaluate a pre-saccade shift of visual attention, saccade latency, decision time and the time to first fixation on a pulmonary nodule. Results: Thoracic radiologists showed significantly higher pre-saccadic shift of visual attention towards pulmonary nodules once using the full frequency spectrum (p < 0.05). An initial saccade orientation made by these radiologists on full resolution images correlated at significant level with their confidence ranking of pulmonary nodules (ρ = -0.387, p < 0.001). Conclusions: Thoracic radiologists benefited from high spatial frequency appearance during a rapid presentation of chest radiograph by allocating pre-saccade attention towards pulmonary nodules. This behavior correlated with a higher number of correct decisions, followed by higher confidence in the decisions made, and briefer reaction times.
Details
- Title: Subtitle
- Direction of an initial saccade depends on radiological expertise
- Creators
- Mariusz W Pietrzyk - The Univ. of Sydney (Australia)Mark F McEntee - The Univ. of Sydney (Australia)Michael E Evanoff - The American Board of Radiology (United States)Patrick C Brennan - The Univ. of Sydney (Australia)Claudia R Mello-Thoms - The Univ. of Sydney (Australia)
- Contributors
- Claudia R Mello-Thoms (Editor) - The Univ. of Sydney (Australia)Matthew A Kupinski (Editor) - College of Optical Sciences, The Univ. of Arizona (United States)
- Resource Type
- Conference proceeding
- Publication Details
- Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol.9037, pp.90371A-90371A-8
- Publisher
- SPIE
- DOI
- 10.1117/12.2042828
- ISSN
- 1605-7422
- Language
- English
- Date published
- 03/11/2014
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology
- Record Identifier
- 9984051999602771
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