医学
支气管动脉
图像质量
核医学
放射科
主动脉
造影剂
动脉
有效剂量(辐射)
血管造影
图像噪声
对比噪声比
辐射剂量
计算机断层血管造影
体质指数
外科
内科学
栓塞
人工智能
图像(数学)
计算机科学
作者
Binbin Du,Weidong Zhang,Xuemei Shao,Jing An,MA Hollywood,Xiaoying Zhao,Liangzhi Xu,Daegi An,Yue Tian,Dong Yan,Hongtao Niu
标识
DOI:10.1016/j.crad.2023.09.005
摘要
To explore the feasibility of a "triple-low" dose (low tube voltage, low tube current, and low contrast agent volume) bronchial artery computed tomography (CT) angiography (CTA) to replace routine dose bronchial artery CTA before bronchial artery embolisation (BAE).CTA was obtained from 60 patients with body mass index (BMI) < 30 kg/m2 using a 256 multi-section iCT system, and they were divided into two groups: (1) group A: 100 kVp, 100 mAs, 50 ml contrast medium (CM); (2) group B: 120 kVp, automatic tube current modulation (ACTM), 80 ml CM. CT attenuation of the thoracic aorta, image noise, signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated, and subjective image quality scores and traceability scores assessed. The effective radiation dose was calculated.The radiation dose was reduced by 79.7% in group A compared to group B (p<0.05). The CT attenuation of the thoracic aorta was increased by approximately 13% in group A compared to group B (p<0.05). Higher image noise, lower SNR, and CNR were obtained in group A compared to group B (all p<0.05). Both subjective image quality scores and traceability scores did not differ between groups A and B (both p>0.05).It is feasible to use the "triple-low" dose CTA protocol for patients with a body mass index (BMI) < 30 kg/m2. The radiation dose was reduced by 79.7%, and the dose of contrast medium was reduced by 37.5% to ensure the diagnostic value.
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