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Journal of Medical Imaging • Open Access • new

Eye tracking in catheter-based cardiovascular interventions: early results
Author(s): Peter Lanzer; Mohammad Al-Naser; Syed Saqib Bukhari; Andreas R. Dengel; Elizabeth A. Krupinski

Paper Abstract

Visual x-ray image processing (XRIP) represents a fundamental component of catheter-based cardiovascular interventions (CBCVIs). To date, no data are available to define XRIP in this setting. To characterize CBCVI XRIP, we developed a computer-based method allowing continuous temporal–spatial analysis of data recorded by a head-mounted eye-tracking device. Quantitative analysis of gaze duration of an expert operator (EO) revealed that the average time in minutes spent viewing the images on the display screen was 39.5%±13.6% and 41.5%±18.3% of the total recorded time in coronary angiography (CA) and in CA followed by CBCVI, respectively. Qualitative analysis of gaze data of the EO revealed consistent focus on the center point of the screen. Only if suspicious findings were detected did gaze move toward the target. In contrast, a novice operator (NO) observing a subset of cases viewed coronary artery segments separately and sequentially. The developed methodology allows continuous registration and analysis of gaze data for analysis of XRIP strategies of EOs in live-cases scenarios and may assist in the transfer of experts’ reading skills to novices.

Paper Details

Date Published: 4 August 2017
PDF: 8 pages
J. Med. Img. 4(3) 035502 doi: 10.1117/1.JMI.4.3.035502
Published in: Journal of Medical Imaging Volume 4, Issue 3
Show Author Affiliations
Peter Lanzer, Gesundheitszentrum Bitterfeld/Wolfen gGmbH (Germany)
Mohammad Al-Naser, Technische Univ. Kaiserslautern (Germany)
Deutsches Forschungszentrum für Künstliche Intelligenz GmbH (Germany)
Syed Saqib Bukhari, Deutsches Forschungszentrum für Künstliche Intelligenz GmbH (Germany)
Andreas R. Dengel, Deutsches Forschungszentrum für Künstliche Intelligenz GmbH (Germany)
Technische Univ. Kaiserslautern (Germany)
Elizabeth A. Krupinski, Emory Univ. School of Medicine (United States)


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