A group of Professor Koichi Chida of Tohoku University Graduate School of Medicine and part-time lecturer Yoshihiro Haga of Sendai Kousei Hospital clarified the actual exposure of the eyes (lens) of radiation workers.
Many cases of radiation damage such as cataract have been reported to radiation workers involved in IVR (interventional radiology), and there has been concern about the danger.In addition, the conventional method for measuring lens exposure has not been able to be said to be an accurate evaluation in terms of the measurement unit and measurement location (a dosimeter is attached near the neck and chest).
Therefore, Professor Chida et al. Used a new lens dosimeter that can be worn near the left eye to more accurately measure the exposure status of IVR radiation workers who are worried that the lens exposure is particularly high.
After six months of measurements, it became clear that without proper radiation protection, there is a risk of exposure to doses that exceed the new standard for lens dose limits (20 mSv / year).Furthermore, the group revealed that when wearing lightweight type radiation protection glasses, a blocking effect of about 60% is obtained against lens exposure.
Through this research, we have obtained a lot of knowledge such as the blocking effect of protective glasses by accurately measuring the exposure dose of the crystalline lens using a new dosimeter, and it is expected that it will contribute to the prevention of cataracts in radiation medical staff. Will be done.
Paper information: [Scientific Reports] Occupational eye dose in interventional cardiology procedures.
