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Quantification of Avoidable Radiation Exposure in Interventional Fluoroscopy With Eye Tracking Technology.

Jan Michael Zimmermann1, Luca Vicentini2, David Van Story1

  • 1From the Product Development Group Zurich, Department of Mechanical and Process Engineering, ETH Zurich.

Investigative Radiology
|March 10, 2020
PubMed
Summary

A significant portion of radiation used during cardiovascular interventions is avoidable. Researchers found that over 43% of radiation exposure occurred when operators weren't looking at the fluoroscopy screen, highlighting potential for dose reduction.

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Area of Science:

  • Medical Imaging
  • Radiation Safety
  • Cardiovascular Interventions

Background:

  • Minimizing radiation exposure in medical procedures is critical.
  • Fluoroscopically guided cardiovascular interventions utilize significant radiation.
  • Quantifying avoidable radiation is essential for safety improvements.

Purpose of the Study:

  • To quantify the percentage of avoidable radiation during cardiovascular interventions.
  • To utilize eye-tracking technology for precise measurement of operator attention.
  • To establish a novel method for calculating avoidable radiation dose.

Main Methods:

  • Employed mobile eye-tracking glasses to record operator visual attention during procedures.
  • Developed a machine learning algorithm and image processing techniques for data analysis.
  • Calculated the percentage of avoidable radiation and associated dose metrics.

Main Results:

  • 30 cardiovascular interventions involving 5 operators were analyzed.
  • A mean of 43.5% of administered radiation was found to be avoidable.
  • This corresponds to substantial avoidable air kerma and dose area product, plus over 11 minutes of unnecessary X-ray use per procedure.

Conclusions:

  • A significant percentage of radiation during cardiovascular interventions is avoidable.
  • Operator inattention to the fluoroscopy screen is a primary contributor to avoidable radiation.
  • Findings underscore the need for strategies to reduce unnecessary radiation exposure.