Employing eye tracking to identify the onset of fatigue in Digital Breast Tomosynthesis (DBT) readers for a national breast cancer screening programme. - Dorina Roy; Amanda Koh; Alastair G. Gale; Peter Phillips; William Teh; Michael Michell; Nisha Sharma; Iain T. Darker; Mitchell Searjeant; Ellhia Sudin; Yan Chen 012 (Image Perception, Observer Performance, and Technology Assessment, 2021)