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KMID : 1137820200410040147
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의공학회지
2020 Volume.41 No. 4 p.147 ~ p.153
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The Usability Assessment of Self-developed Phantom for Evaluating Automatic Exposure Control System Using Three-Dimensions Printing
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Lee Ki-Baek
Nam Ki-Chang
Kim Ho-Chul
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Abstract
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The self-developed AEC phantom consisted of four different size of portions. As a result, two types of phantom (pyramid and pentagon shape) were created according to the combination of the layers. For evaluating the radiation dose with the two types of phantom, the values of tube current, computed tomography dose index volume (CTDIvol), and dose length product (DLP) were compared. As a result, it was confirmed that the values of tube current were properly reflected according to the thickness, and the CTDIvol and DLP were not significantly changed regardless of AEC functions of different scanners. In conclusion, the self-developed phantom by using 3D printer could assess whether the AEC function works well. So, we confirmed the possibility that a self-made phantom could replace the commercially expensive AEC performance evaluation phantom.
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KEYWORD
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Three-dimensions printing, Automatic exposure control, Self-developed phantom, Tube current, Computed tomography
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