Objectives

The contribution of Belgian interventional cardiologists and electrophysiologists will:

  1. Provide a scientific basis for the determination of the low-dose threshold for lens opacities.    
  2. Have an impact on the improvement of radiation protection and dose reduction procedures for medical staff in the clinical environment.

Recent years some small-scale studies have shown that ionizing radiation can cause early cataracts (lens opacities) at radiation doses lower than previously considered. For radiation protection purposes, it has generally been assumed that there is a threshold of dose below which no lens opacities arise. Although the dose threshold has been recently revised and for occupational exposures reduced from 150 mSv to 20 mSv per year (ICRP report 118; 2012), there are still some issues, specifically related to the dose-response relationship.  

With the revised lower dose threshold, radiation effect on the eye lens has become one of the major concerns in relation to occupational, medical and public exposures. The BELCOLORE study, in combination with the European EURALOC study aims at clarifying the dose-response relationship and in the meantime provides some practical tools to reduce occupational exposure of medical staff.