Eye tracking in catheter-based cardiovascular interventions: Early results

Peter Lanzer, Mohammad Al-Naser, Syed Saqib Bukhari, Andreas Dengel, Elizabeth A Krupinski

Research output: Contribution to journalArticle

2 Scopus citations

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.

Original languageEnglish (US)
Article number035502
JournalJournal of Medical Imaging
Volume4
Issue number3
DOIs
StatePublished - Jul 1 2017
Externally publishedYes

Keywords

  • catheter-based cardiovascular interventions
  • eye tracking
  • perception
  • teaching

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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