TY - JOUR
T1 - A size-specific effective dose for patients undergoing CT examinations
AU - Anam, C.
AU - Haryanto, F.
AU - Widita, R.
AU - Arif, I.
AU - Fujibuchi, T.
AU - Dougherty, G.
N1 - Funding Information:
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.
Publisher Copyright:
© 2019 Published under licence by IOP Publishing Ltd.
PY - 2019/5/7
Y1 - 2019/5/7
N2 - 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%.
AB - 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%.
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U2 - 10.1088/1742-6596/1204/1/012002
DO - 10.1088/1742-6596/1204/1/012002
M3 - Conference article
AN - SCOPUS:85066303284
SN - 1742-6588
VL - 1204
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012002
T2 - 7th Asian Physics Symposium, APS 2017
Y2 - 29 August 2017 through 31 August 2017
ER -