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Proceedings Paper

Evaluation of perception performance in neck dissection planning using eye tracking and attention landscapes
Author(s): Oliver Burgert; Veronika Örn; Boris M. Velichkovsky; Michael Gessat; Markus Joos; Gero Strauß; Christian Tietjen; Bernhard Preim; Ilka Hertel
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Paper Abstract

Neck dissection is a surgical intervention at which cervical lymph node metastases are removed. Accurate surgical planning is of high importance because wrong judgment of the situation causes severe harm for the patient. Diagnostic perception of radiological images by a surgeon is an acquired skill that can be enhanced by training and experience. To improve accuracy in detecting pathological lymph nodes by newcomers and less experienced professionals, it is essential to understand how surgical experts solve relevant visual and recognition tasks. By using eye tracking and especially the newly-developed attention landscapes visualizations, it could be determined whether visualization options, for example 3D models instead of CT data, help in increasing accuracy and speed of neck dissection planning. Thirteen ORL surgeons with different levels of expertise participated in this study. They inspected different visualizations of 3D models and original CT datasets of patients. Among others, we used scanpath analysis and attention landscapes to interpret the inspection strategies. It was possible to distinguish different patterns of visual exploratory activity. The experienced surgeons exhibited a higher concentration of attention on the limited number of areas of interest and demonstrated less saccadic eye movements indicating a better orientation.

Paper Details

Date Published: 8 March 2007
PDF: 9 pages
Proc. SPIE 6515, Medical Imaging 2007: Image Perception, Observer Performance, and Technology Assessment, 65150B (8 March 2007); doi: 10.1117/12.709631
Show Author Affiliations
Oliver Burgert, Univ. of Leipzig (Germany)
Veronika Örn, Univ. of Leipzig (Germany)
Boris M. Velichkovsky, Technical Univ. of Dresden (Germany)
Michael Gessat, Univ. of Leipzig (Germany)
Markus Joos, Technical Univ. of Dresden (Germany)
Interactive Minds Dresden GmbH (Germany)
Gero Strauß, Univ. of Leipzig (Germany)
Christian Tietjen, Univ. of Magdeburg (Germany)
Bernhard Preim, Univ. of Magdeburg (Germany)
Ilka Hertel, Univ. of Leipzig (Germany)

Published in SPIE Proceedings Vol. 6515:
Medical Imaging 2007: Image Perception, Observer Performance, and Technology Assessment
Yulei Jiang; Berkman Sahiner, Editor(s)

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