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Title: Analysis of visual search behaviour from experienced radiologists interpreting digital breast tomosynthesis (DBT) images: a pilot study
Authors: Dong, Leng
Tang, Qiang
Gale, Alastair G.
Bernardi, Daniella
Chen, Yan
Keywords: Digital breast tomosynthesis
Breast
Eye
Visualization
3D image processing
Diagnostics
Mammography
Visual analytics
Issue Date: 2018
Publisher: © Society of Photo-Optical Instrumentation Engineers (SPIE)
Citation: DONG, L. ... et al, 2018. Analysis of visual search behaviour from experienced radiologists interpreting digital breast tomosynthesis (DBT) images: a pilot study. IN: Nishikawa, R.M. and Samuelson, F.W. (eds). Proc. SPIE 10577, Image Perception, Observer Performance, and Technology Assessment, 1057707 (19 March 2018); doi: 10.1117/12.2293615.
Abstract: Digital Breast Tomosynthesis has several advantages over traditional 2D mammography. However, the cost-effectiveness to implement DBT modality into breast screening programmes is still under investigation. The DBT modality has been integrated into a regional breast screening program in Italy for several years. The purpose of this study is to examine the experienced Italian DBT readers’ visual search behaviour and summarise their visual inspection patterns. Seven experienced radiologists took part in the study, reading a set of DBT cases with a mixture of both normal and abnormal cases whilst their eye movements data were recorded. They read the cases through a fixed procedure starting with a 2D overview and then went through the DBT view of each side of the breasts. It was found that the experienced readers tended to perform a global-focal scan over the 2D view to detect the abnormality and then ‘drilled’ through the DBT slices, interpreting the details of the feature. The reading speed was also investigated to see if there was any difference in length of time when expert radiologists examine both normal and abnormal cases. The results showed that there was no significant difference in time between normal and abnormal cases. The eye movement patterns revealed that experienced DBT readers covered more areas on the 2D view and fixated longer and with more dwells inside the AOI in the 3D view. Based on these findings it is hoped that by understanding the visual search patterns of the experienced DBT radiologists, it could potentially help DBT trainees to develop more efficient interpretation approaches.
Description: Copyright (2018) Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Sponsor: This work was supported by Hologic.
Version: Published
DOI: 10.1117/12.2293615
URI: https://dspace.lboro.ac.uk/2134/32534
Publisher Link: https://doi.org/10.1117/12.2293615
ISSN: 0277-786X
Appears in Collections:Conference Papers and Presentations (Computer Science)

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