Original paper| Volume 77, P10-17, September 2020

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Correlation between eye lens doses and over apron doses in interventional procedures

Published:August 04, 2020DOI:


      • Relationship between over apron dosimetry and eye lens doses is studied for five different medical specialties.
      • Geometric corrections factors obtained could be used to estimate eye lens dose using an over apron dosimeter.
      • More consistent results have been found for over apron dosimeter worn at chest level compared to thyroid level.
      • A standardized protocol and a dedicated calibration procedure was followed, with three different dosimeters worn by each exposed worker.


      Measurements of eye lens dose using over apron dosimeters with a geometric correction factor is an international accepted practice. However, further knowledge regarding geometric correction factors in different contexts is required. The authors studied the correlation between eye lens dose and over apron dosimetry for different medical specialties in eleven hospitals, using a standardized protocol, two independent over apron dosimeters (worn at chest and at neck levels) and a dedicated calibration procedure. The results show good correlation between subjects working on the same medical specialty for 5 specialties: Interventional Radiology, Vascular Surgery, Vascular Radiology, Hemodynamics and Neuroradiology. The geometric correction factors resulting from this study could be used to estimate eye lens dose using over apron dosimeters, which are more comfortable than eye lens dosimeters, as reported by the study subjects, as long as the increased uncertainty of the over apron dosimetry compared to the dedicated eye lens dosimetry is acceptable.


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