能谱CT成像在消除肝癌患者经导管化疗栓塞术后碘油伪影中的应用

发布时间：2018-05-31 11:53

本文选题：能谱CT + 原发性肝癌　；参考：《安徽医学》2016年12期

【摘要】：目的探讨CT能谱检查中单能量图像(Mono)对消除肝癌经导管化疗栓塞术(TACE)碘油沉积硬化伪影中的作用。方法采用GE能谱CT扫描机对符合标准的30例肝癌患者于TACE术后行能谱CT检查,获得Mono图像,并与常规混合能量(QC)图像进行对比,选取伪影较多的层面,观察不同成像方式下碘油栓塞缺损区和周边区的显示情况,对图像质量进行主观评分,分别计算噪声指数(NI)和对比噪声比(CNR)。结果 90 ke V Mono图像主观评分最高,观察碘油沉积范围和周围结构最好,90 ke V Mono图像的SNR为(0.78±0.17),QC图像的SNR为(0.62±2.31),两者差异有统计学意义(P0.05),QC图像的CNR介于60ke V和70 ke V之间,分别比较,差异均无统计学意义(P0.05)。结论常规CT和能谱CT相比,对显示肝癌TACE术后碘油沉积区和/或周边区结构最佳的图像为90 ke V Mono图像。
[Abstract]:Objective to investigate the effect of Mono on removing lipiodol deposition sclerosing artifact in transcatheter chemoembolization (TACEE) of hepatocellular carcinoma (HCC). Methods 30 patients with liver cancer were examined with GE energy spectrum CT scanner after TACE. The Mono images were obtained and compared with the conventional mixed energy Mono images. The artifact layers were selected. Objective: to observe the display of defect and peripheral areas of lipiodol embolization under different imaging modes, to evaluate the image quality, to calculate the noise index (NI) and the contrast noise ratio (CNR), respectively. Results the subjective score of 90 ke V Mono images was the highest. The SNR of 90 ke V Mono images was 0.78 卤0.17 and the SNR of 90 ke V Mono images was 0.62 卤2.31. The CNR of the two images was between 60ke V and 70ke V. The difference was not statistically significant (P 0.05). Conclusion compared with conventional CT and energy dispersive CT, 90 ke V Mono is the best image for displaying the structure of lipiodol deposit and / or peripheral area after TACE.
【作者单位】：安徽医科大学第一附属医院放射科;安徽医科大学附属省立医院影像科;
【分类号】：R735.7;R730.44

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