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目的 探讨柔性减影（CE-Boost）技术在主动脉CT血管成像（CTA）的应用价值。方法 回顾性收集65例临床疑似主动脉疾病并进行主动脉CTA检查的患者，设为常规组，运用CE-Boost后处理技术所获得图像设为CE-Boost组。对两组图像分别测量气管分叉水平的斜方肌、升主动脉、降主动脉及空气，同时测量头臂干、腹主动脉起始段、腹腔干、腹主动脉分叉处、双侧髂外动脉及双侧髂内动脉等CT值（HU）及标准差（SD）值，计算信噪比（SNR）及对比噪声比（CNR）进行客观评价；主观评价主动脉整体图像质量、血管清晰度。结果 CE-Boost组主动脉整体图像质量评分显著高于常规组（5.0比4.5,P<0.0001），观察者间一致性良好（相关系数>0.78）。CE-Boost组平均CT值较常规组提升47.5%(738.03比500.22 HU),CNR和SNR分别增加267%和53%(P<0.05)。结论 CE-Boost后处理技术可提高主动脉CTA图像质量，能更清晰地评估主动脉整体情况，提供更多的影像信息。
Abstract：Objective To assess the value of subtraction contrast-enhancement boost(CE-Boost) technology in aortic computed tomography angiography(CTA). Methods This retrospective study included 65 patients with clinically suspected aortic disease who underwent aortic CTA. Images were divided into the conventional group and CE-Boost group with image processing using CE-Boost technology. Measurements of the Hounsfield unit(HU) and standard deviation(SD) values were performed for both groups at various locations including the trapezius muscle at the level of the carina, ascending aorta, descending aorta, air, brachiocephalic trunk, abdominal aorta at level of the diaphragm and bifurcation, celiac trunk, bilateral external and internal iliac arteries. The signal-to-noise ratio(SNR) and contrast-to-noise ratio(CNR) were calculated. Subjective assessment of overall aortic image quality and vascular clarity was conducted. Results The overall image quality score of the aorta in the CE-Boost group(5.0) was significantly(P <0.0001) higher than that in the conventional group(4.5) with good inter-observer agreement(intraclass correlation coefficient>0.78). The CE-Boost group had significantly(P<0.05) increased mean CT value(738.03) by 47.5%, increased CNR by 267% and SNR by 53% compared with the conventional group( 500. 22 HU). Conclusion CE-Boost post-processing technology improves image quality of aortic CTA with better depiction of the overall aortic condition and more comprehensive imaging information.
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基本信息:
中图分类号:R816.2;R543.1
引用信息:
[1]张敏,赖志满,谢定祥,等.柔性减影CE-Boost技术在主动脉CT血管成像中的初步应用[J].影像诊断与介入放射学,2025,34(01):23-28.
基金信息:
国家自然科学基金青年基金（82202217）
2025-02-25
2025-02-25