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http://dx.doi.org/10.7742/jksr.2021.15.2.101

A Study on the Shielding of Orbit by 3D Printed Filament in Brain CT  

Choi, Woo Jeon (Department of Radiological Science, Busan BON Hospital)
Kim, Dong Hyun (Department of Radiological Science, Catholic University of Pusan)
Publication Information
Journal of the Korean Society of Radiology / v.15, no.2, 2021 , pp. 101-108 More about this Journal
Abstract
The CT can accurately present the anatomical structure of an organ in the human body, and the resolution of the image is excellent. On Brain CT examination, the radiation sensitivity of the orbit is high and it is subject to many exposure effects. To reduce exposure dose of lens, this study compares change of exposure dose and shielding rate about non-shielding and shielding in a way of using two shielding materials, bismuth and tungsten. In this study, we used bismuth and tungsten filament as shielding materials made by 3D printing to measure the exposure dose according to the materials thickness and each of slices. To compare each shielding rate, 1 mm to 5 mm of two materials was measured with the head phantom fixed and the Magicmax universal dosimeter placed on the eye when the shielding material is not placed, and the shielding material is placed on it. In the 1 mm thick filament, the bismuth filament showed 26.8% and the tungsten filament showed 43.1% shielding rate. Therefore, tungsten presents much greater shielding effect than bismuth.
Keywords
Bismuth Filament; Tungsten Filament; 3D printing; Brain CT;
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