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A size-specific effective dose for patients undergoing CT examinations
Anam C.a, Haryanto F.b, Widita R.b, Arif I.b, Fujibuchi T.c, Dougherty G.d
a Department of Physics, Faculty of Mathematics and Natural Sciences, Diponegoro University, Indonesia
b Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Indonesia
c Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
d Applied Physics and Medical Imaging, California State University, Channel Islands, United States
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019 Published under licence by IOP Publishing Ltd.This study aims to develop a simple method for estimating the size-specific effective dose using the ImPACT software. The size-specific effective dose was calculated from the images of patients who underwent CT examinations of the thorax and abdomen regions. Volume computed tomography dose index (CTDIvol) and mAs data were obtained from the dose report. The average of mAs and CTDIvol were used to determine the normalized CTDIvol (nCTDIvol). Patient size was expressed in effective diameter (Deff), and was measured at nine slices along the z-axis. The normalized size-specific dose estimate (nSSDE) was then calculated. The normalized size-specific effective dose was obtained in the “effective dose” text-box by inputting an arbitrary value in the “CTDI (air)” text-box so that the “CTDIvol” text-box showed a similar value to the nSSDE. The results show that the normalized size-specific effective dose decreases exponentially with increasing patient size. The results are consistent with results of Sahbaee formula to within 20%.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Arbitrary values,Dose estimates,Effective diameter,Effective dose,Patient size,SIMPLE method[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This work was funded by the RIK (Riset & Inovasi KK), LPPM, Institut Teknologi Bandung (ITB), 107v/I1.C01/PL/2017; and the Penelitian Disertasi Doktor, Kementerian Riset, Teknologi, Pendidikan Tinggi, Republik Indonesia. The authors would like to thank Dr. Sue Edyvean ImPACT and Mr. Masdi from Prof. Dr. Margono Hospital.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1088/1742-6596/1204/1/012002[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]