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KMID : 1001220090110010021
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Journal of the Korean Society of Digital Medical Imaging Technology
2009 Volume.11 No. 1 p.21 ~ p.26
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A Comparision of the Radiation dose by Distance and the Direction according to a Tube Position of the C-arm Unit
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Kim Jin-Su
Woo Bong-Cheol
Kim Sung-Jin
Lee Kwan-Sup
Ha Dong-Yoon
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Abstract
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In operation room, the use of the C-arm unit is increasing. So, the radiation dose of the person who work in operation room was even more increased than before. Thus, this study is shown the measurement of expose dose and the way for decrease of the radiation dose by using the C-arm unit. The experiment was performed with the C-arm unit and used a phantom which is similar to tissue of the human body and fluoro-glass dosimeter for dose measurement. The expose dose were measured by the tube position(over tube, under tube) of the C-arm unit, distance(50, 100200cm), direction(I, II, III, IV), runtime(1min, 3min), wearing of the apron. The radiation dose was decreased twice and three times at under tube rather than over tube. The I direction was measured 2030% more than the others. The biggest expose dose is 50cm from center on distance. The expose dose is decreased to far from center. In case of Wearing of the apron, the radiation dose was decreased 6090% by the distance. But there weren’t change of the radiation dose by C-arm tube position. In present, by increasing the usage of the C-arm unit, the radiation dose is inevitable. So, this study recommends us to use the under tube of the C-arm unit. Also, Wearing of the apron is required for minimum of the radiation exposure.
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KEYWORD
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C-arm, Radiation dose
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