NDLI: Comparative analysis of the radiation shield effect in an abdominal CT scan

Content Provider	Springer Nature Link
Author	Lee, Joon Seok Chung, Woon Kwan Lim, Chang Seon Dong, Kyung Rae Kim, Young Jae Kim, Seon Chil
Copyright Year	2014
Abstract	This study measured and compared the dose on the eyeballs and the thyroid with and without the use of a shield by applying the abdominal examination protocol used in an actual examination to a 64-channel computed tomography (CT) scan. A dummy phantom manufactured from acryl was used to measure the dose to the eyeballs and the thyroid of a patient during a thoraco-abdominal CT scan. The dose was measured using three dosimeters (optically-stimulated luminescence dosimeter (OSLD), thermoluminescence dosimeter (TLD) and photoluminescence dosimeter (PLD)) attached to the surfaces of three parts (left and right eyeballs and thyroid) in a phantom with and without the use of a shield for the eyeballs and the thyroid. Two types of shields (1-mm barium shielding sheet and 1-mm tungsten shielding sheet) were used for the measurements. The goggles and the lead shield, which are normally used in clinical practice, were used to compare the shield ratios of the shields. According to the results of the measurements made by using the OSLD, the shield ratios of the barium and the tungsten sheets were in the range of 34–36%. The measurements made by using the TLD showed that the shield ratio of the barium sheet was 6.25% higher than that of the tungsten sheet. When the PLD was used for the measurement, the shield ratio of the barium sheet was 33.34%, which was equivalent to that of the tungsten sheet. These results confirmed that the cheap barium sheet had a better shielding effect than the expensive tungsten sheet.
Starting Page	929
Ending Page	935
Page Count	7
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	64
Issue Number	6
e-ISSN	19768524
Language	English
Publisher	The Korean Physical Society
Publisher Date	2014-04-08
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Abdominal CT scan Barium Eyeball Tungsten Theoretical, Mathematical and Computational Physics Lead Shield ratio Physics Particle and Nuclear Physics Thyroid
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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