Development of a novel artifact-free eye shield based on silicon rubber-lead composition in the CT examination of the head

The aim of this work was to develop a novel artifact-free eye shield and evaluate its effect on the
dose received by the eye lens and the resulting image quality in the CT examination of the head. A
new material for an eye shield was synthesised from silicon rubber (SR) and lead (Pb) using a simple
method. The percentage of Pb was varied from 0 to 5% wt. An anthropomorphic head phantom was scanned
with and without the SR-Pb eye shield, and compared with a tungsten paper (WP) eye shield. The
distance from the eye shield and head was varied from 0 to 5 cm. The dose to the eye lens was
measured using photo-luminescence detectors (PLDs). The presence of artifacts was determined by
measuring CT numbers at different eye lens locations and by subtracting images with and without the
eye shield. The dose reduction increases with increasing Pb content in the SR-Pb eye shield. A 5% wt
SR-Pb eye shield reduced the eye lens dose by up to 50%, whereas the WP eye shield reduced the dose
by up ...

Source: Journal of Radiological Protection - September 22, 2019 Category: Physics Authors: Yulia Irdawati, Heri Sutanto, Choirul Anam, Toshioh Fujibuchi, Fatimatuz Zahroh and Geoff Dougherty Source Type: research