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KMID : 1149020210230010011
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Journal of Korean Society of Computed Tomographic Technology
2021 Volume.23 No. 1 p.11 ~ p.18
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Usefulness of Applying 80 kV Single Energy Abdominal Computed Tomography to Patients under BMI 25
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Hwang Jae-Woong
Song Ho-Seok
Park Young-Jae
Kim Kak-Myeong
Lee Kang-Seok
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Abstract
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It is intended to measure the effect of dose and contrast media reduction by using 80 kV in a single-energy abdominal CT like a dual-energy abdominal CT. It is divided into three groups of 80 kV of single energy CT (SECT), 100 kV of SECT, 90 kV and 150 kV with tin filter of dual energy CT (DECT), and reduced contrast volume and injection speed applied with 80 kV SECT like a DECT. Also, quantitative and qualitative evaluation on 50 images of each group has been conducted for comparison. Signal-to-noise ratio in a 80 kV SECT is higher than other groups. However, contrast-to-noise ratio was not significantly different among the three groups (p>0.05). Reduction of radiation dose when using 80 kV SECT was identified by comparison with DECT. However, the radiation dose was almost similar compared to the 100 kV SECT. From this study, possibility of reducing contrast media and radiation dose by applying 80 kV SECT to patients under BMI 25 can be proposed.
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KEYWORD
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80 kV, Abdominal CT, Contrast media reduction, Contrast media side effect, Dual energy, Single energy
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