Radiation doses to the eye lenses of radiologic technologists who assist patients undergoing computed tomography.

Abstract

The present study aimed to determine the amount of radiation exposure to the eye lenses of radiologic technologists while assisting patients undergoing computed tomography imaging and the effects of wearing lead glasses on dose reduction. Monthly radiation doses were collected for 12months. Dose quantities at a depth of 3mm (Hp(3)) were measured at the neck using personal optically stimulated luminescence (OSL) dosimeters. We also estimated Hp(3) as converted air kerma using small OSL dosimeters at the neck and at six positions on the lead glasses near the eyes. The total dose-length product at the time of patient assistance was 53,341 mGy·cm/y. The Hp(3) from the personal dosimeter was 9.13mSv/y and the highest dose recorded by the small OSL dosimeters attached outside the lead glasses was 8.47mSv/y. The lead glasses reduced the radiation exposure by ~ 60%.