@inproceedings{d0001b05ef5a4583b727a2bd3b11751b,
title = "Direction of an initial saccade depends on radiological expertise",
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 ({\"I}= -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.",
keywords = "Eye-tracking, Observer study, Pulmonary nodule, ROC, Spatial Frequency",
author = "Pietrzyk, \{Mariusz W.\} and McEntee, \{Mark F.\} and Evanoff, \{Michael E.\} and Brennan, \{Patrick C.\} and Mello-Thoms, \{Claudia R.\}",
year = "2014",
doi = "10.1117/12.2042828",
language = "English",
isbn = "9780819498304",
series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",
publisher = "SPIE",
booktitle = "Medical Imaging 2014",
address = "United States",
note = "Medical Imaging 2014: Image Perception, Observer Performance, and Technology Assessment ; Conference date: 16-02-2014 Through 17-02-2014",
}