柔性减影CE-Boost技术对提高大根髓动脉CT图像质量的价值  

Value of contrast-enhancement boost technique in improving the CT image quality of Adamkiewicz artery

作　　者：玄国庆 周慧清 马壮飞 张敏 杨晨晓 范小波 贾守强 XUAN Guoqing;ZHOU Huiqing;MA Zhuangfei;ZHANG Min;YANG Chenxiao;FAN Xiaobo;JIA Shouqiang(Department of Imaging,Jinan City People’s Hospital,Shandong 271199,China)

机构地区：[1]济南市人民医院影像科,山东济南271199 [2]佳能医疗系统(中国)有限公司临床科研部,北京100015

出　　处：《影像诊断与介入放射学》2024年第1期50-55,共6页Diagnostic Imaging & Interventional Radiology

摘　　要：目的评价柔性减影(CE-Boost)技术在CT增强扫描中对大根髓动脉的显示及图像质量的影响。方法回顾性选取行胸腹部CT常规增强扫描的109例患者,将平扫及动脉期图像通过CE-Boost技术对其进行处理而获得CE-Boost图像。观察动脉期图像(A组)与CE-Boost图像(B组)上大根髓动脉的显影率,并对图像质量进行客观评价[降主动脉CT值和标准差(SD)值、信号噪声比(SNR)和对比噪声比(CNR)]和主观评价(AKA可视化效果评分)。结果B组图像上降主动脉CT值、SNR值、CNR值均高于A组,差异有统计学意义(P<0.05);B组图像噪声SD值低于A组,差异有统计学意义(P<0.05)。A组有82例大根髓动脉显影,显影率为75.2%(82/109);B组有97例大根髓动脉显影,显影率为88.9%(97/109)。两组图像的显影率差异有统计学意义(χ^(2)=36.54,P<0.05)。A组和B组主观评分均值的中位数分别为2(1.5)分和3(2)分,差异有统计学意义(Z值为-7.12,P<0.05)。结论CE-Boost技术可提高CT增强大根髓动脉的显示及图像质量。Objective To evaluate the impact of contrast-enhancement boost(CE-boost)technique on the visualization and image quality of the Adamkiewicz artery(AKA)on CT.Methods Routine enhanced chest and abdominal CT of 109 patients was retrospectively analyzed.The unenhanced and arterial phase images were processed using the CE-boost technique.The visualization rates and visualization effect scores of the AKA on arterial phase images(group A)and CE-boost images(group B)were subjectively analyzed.Objective evaluation of image quality was performed by measuring the descending aorta CT value and standard deviation(SD),calculating the signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR).Results The descending aorta CT value,SNR and CNR were significantly(P<0.05)higher in group B than in group A.The image noise SD value in group B was significantly(P<0.05)lower than that in group A.AKA visualization rate in in group B(88.9%,97/109)was significantly higher(χ^(2)=36.54,P<0.05)than that in group A(75.2%,82/109).The median subjective score of group B(3)was significantly higher(Z=-7.12,P<0.05)than that of group A(2).Conclusion CE-boost technique can improve the visualization and image quality of the AKA in contrast-enhanced CT.

关 键 词：大根髓动脉 体层摄影术 X线计算机 图像质量 对比增强技术 

分 类 号：R543.5[医药卫生—心血管疾病] R814.42[医药卫生—内科学]