Image quality assessment of the CARE kV for pediatric CT angiography: A feasibility study of over 50% effective dose reduction

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences Pub Date : 2025-03-01 DOI:10.1016/j.jrras.2025.101386

Chunmei Fan , Runtong Lu , Dilisaer Naisula , Fei Bi , Xin Liu , Shui Wang , Jihang Sun

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引用次数: 0

Abstract

Objective

To evaluate whether the application of CARE kV automatic tube voltage modulation technology can reduce the radiation dose required for CT angiography (CTA) in children rapidly, conveniently, and effectively while maintaining image quality.

Methods

57 pediatric abdominal CTA were enrolled in the study and control groups. The tube voltage was automatically modulated using CARE kV. Dose-saving optimization indices used for the study and control groups were 12 (preference for a lower tube voltage) and 3 (preference for a higher tube voltage), respectively. Tube voltage and effective dose (ED) were recorded for the two groups, and a multiple linear regression analysis was used to scrutinize factors influencing voltage selection and radiation dose. Two reviewers subjectively evaluated the image quality using a 5-point Likert scale (3 points: qualified; 5 points: best), and the contrast-to-noise ratio (CNR) was calculated.

Results

The most commonly selected tube voltage was 70 kV (36/57, 63.16%) and 100 kV (30/57, 52.63%) in the study and control groups, respectively (p < 0.001). The ED of the study group was 1.58 ± 1.05 mSv, which was 57.07% lower than that in the control group (p < 0.001). Both voltage selection and ED exhibited a negative correlation with the DI value. The small artery display ability of the two groups was 4.05 ± 0.64 and 4.11 ± 0.65 (p = 0.31). No statistically significant difference was found for the aortic CNR between the two groups (p = 0.15).

Conclusion

CARE kV is a rapid, convenient, and effective way to reduce the radiation dose in CTA by >50% in children.

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来源期刊

Journal of Radiation Research and Applied Sciences MULTIDISCIPLINARY SCIENCES-

自引率

5.90%

发文量

130

审稿时长

16 weeks

期刊介绍： Journal of Radiation Research and Applied Sciences provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and applications of nuclear, radiation and isotopes in biology, medicine, drugs, biochemistry, microbiology, agriculture, entomology, food technology, chemistry, physics, solid states, engineering, environmental and applied sciences.