Imperial College London
Alternate

Professor the Lord Darzi of Denham PC KBE FRS FMedSci HonFREng

Faculty of Medicine, Department of Surgery & Cancer

Co-Director of the IGHI, Professor of Surgery
 
 
 
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Contact

 

+44 (0)20 3312 1310a.darzi

 
 
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Location

 

Queen Elizabeth the Queen Mother Wing (QEQM)St Mary's Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lami:2018:10.1055/s-0044-101026,
author = {Lami, M and Singh, H and Dilley, JH and Ashraf, H and Edmondon, M and Orihuela-Espina, F and Hoare, J and Darzi, A and Sodergren, MH},
doi = {10.1055/s-0044-101026},
journal = {Endoscopy},
pages = {701--707},
title = {Gaze patterns hold key to unlocking successful search strategies and increasing polyp detection rate in colonoscopy},
url = {http://dx.doi.org/10.1055/s-0044-101026},
volume = {50},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - BACKGROUND:  The adenoma detection rate (ADR) is an important quality indicator in colonoscopy. The aim of this study was to evaluate the changes in visual gaze patterns (VGPs) with increasing polyp detection rate (PDR), a surrogate marker of ADR. METHODS:  18 endoscopists participated in the study. VGPs were measured using eye-tracking technology during the withdrawal phase of colonoscopy. VGPs were characterized using two analyses - screen and anatomy. Eye-tracking parameters were used to characterize performance, which was further substantiated using hidden Markov model (HMM) analysis. RESULTS:  Subjects with higher PDRs spent more time viewing the outer ring of the 3×3 grid for both analyses (screen-based: r=0.56, P=0.02; anatomy: r=0.62, P<0.01). Fixation distribution to the "bottom U" of the screen in screen-based analysis was positively correlated with PDR (r=0.62, P=0.01). HMM demarcated the VGPs into three PDR groups. CONCLUSION:  This study defined distinct VGPs that are associated with expert behavior. These data may allow introduction of visual gaze training within structured training programs, and have implications for adoption in higher-level assessment.
AU  - Lami,M
AU  - Singh,H
AU  - Dilley,JH
AU  - Ashraf,H
AU  - Edmondon,M
AU  - Orihuela-Espina,F
AU  - Hoare,J
AU  - Darzi,A
AU  - Sodergren,MH
DO  - 10.1055/s-0044-101026
EP  - 707
PY  - 2018///
SN  - 1438-8812
SP  - 701
TI  - Gaze patterns hold key to unlocking successful search strategies and increasing polyp detection rate in colonoscopy
T2  - Endoscopy
UR  - http://dx.doi.org/10.1055/s-0044-101026
UR  - http://hdl.handle.net/10044/1/56972
VL  - 50
ER  -
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