不同重建技术在肿胀手综合征中心静脉CTA的诊断价值

摘要

Objective To compare the diagnostic value of different reconstruction techniques in central venous CT angiography (CTA)of swollen hand syndrome.Methods 40 cases of swollen hand syndrome in this group were performed central venous CTA and digital subtraction angiography(DSA)examination,DSA examination in the CTA 2 days after the completion of CT an-giography images by AW4.4 workstations.The axial(DSA)was used as the standard to analyze the images of the axial position, the maximum density projection of the axial and coronal position,and the imaging of the volume of the coronary arteries by using the maximum density projection and volume imaging of coronal images.Diagnostic accuracy,specificity and sensitivity were ana-lyzed.Results In 40 patients with swollen hand syndrome,the specificity of the original image and axial MIP,coronal MIP,vol-ume image,and overall assessment were 100%, there were no false positive cases.Accuracy was measured by volume imaging and the sensitivity,specificity and accuracy of axial images and axial MIPs were 83%,100%,and 87.5%,respectively,with a maximum of 95%and 100%,respectively.Conclusion Different reconstruction techniques have the highest diagnostic value in volumetric imaging and global assessment of central venous CT angiography in patients with swollen hand syndrome.Therefore, volume imaging is a very important post-processing method,which is helpful for the accurate diagnosis of central venous stenosis and occlusion.The overall evaluation of the method of observation,and DSA can be comparable to the clinical treatment, espe-cially for interventional therapy to provide accurate imaging information,which has a high clinical value.%目的 探讨不同重建技术在肿胀手综合征中心静脉CT血管造影(CTA)的诊断价值.方法 本组40例肿胀手综合征患者均进行中心静脉CTA和数字减影血管造影(DSA)检查,DSA检查在CTA检查后的第2天完成,CT血管造影图像经AW4.4工作站,应用轴位及冠状位最大密度投影、容积成像对图像数据进行处理和三维重建,以数字减影血管造影(DSA)的诊断为标准,分析轴位原始图像、轴位及冠状位最大密度投影、容积成像的诊断准确性、特异性及敏感性.结果 40例肿胀手综合征患者中心静脉CTA检查原始图像和轴向MIP、冠状MIP、容积图像、整体综合评估的特异性均为100%,没有假阳性病例,而准确性以容积成像和整体评估最高,分别为95%和100%,轴位原始图像和轴位MIP的敏感性、特异性及准确性无差别均为83%、100%、87.5%.结论 不同重建技术在肿胀手综合征中心静脉CTA影像诊断中,以容积成像和整体评估诊断价值最高,所以容积成像是非常重要后处理方法,完全可以和DSA检查媲美,为临床治疗提供准确的影像学信息.