肝癌介入栓塞术前的能谱CT血管成像评估  

Preoperative Assessment of the Transeatheter Embolization of Hepatic Carcinoma by Gemstone Spectral Imaging Angiography

作　　者：杨皓[1] 殷士蒙[1] 孙荣跃[1] 宋恬[1] 吴勘华[1] 毕正宏[1] 孙奕波[1] 倪志华[1] 

机构地区：[1]复旦大学附属华东医院放射科

出　　处：《中国医学计算机成像杂志》2013年第1期91-94,共4页Chinese Computed Medical Imaging

摘　　要：目的:探讨能谱CT最佳单能量血管成像在肝癌介入栓塞术前评估的进展。方法:分析60例能谱成像增强扫描的动脉早期图像,分别行冠状位CT混合能量图像重建、最佳单能量血管重建。采用能谱分析软件处理后可产生常规混合能量(140kVp)的图像(方案A)和最佳单能量(50～70kVp)图像(方案B)。分别对两种重建图像中肿瘤周围的肝动脉分级评分,通过配对t检验的方法两种方案中的结果进行比较。结果:最佳单能量血管重建图像同混合能量血管重建图像两种方法在评价肝肿瘤动脉供血分级显示中存在显著性差异(t=28.74,P<0.001),能谱CT最佳单能量血管成像对于肿瘤的动脉血管评估优于混合能量成像。结论:能谱CT最佳单能量成像作为一种术前评估的方法,可以在不降低图像质量的前提下显著提高肝肿瘤血管的噪声比,有利于感兴趣区小血管的检出。Purpose： To discuss the progress of spectral CT best monoergy vessel imaging in preoperative evaluation of embolism interventional therapy of hepatocellular carcinoma. Methods： Sixty patients with hepatocellular carcinoma were enrolled in our study. All of them were undergone enhancement scanning of spectral imaging. Combined energy image with coronal reconstruction and best monoergy vessel reconstruction were done on the early arteial phase images. Based upon the application of spectral analysis software, two sets of images were got, that is, regular combined energy（140kVp） image（A） and best monoergy （50-70kVp） image（B）. The hepatic arteries around the tumor were classified and evaluated with these sets of images. The results gained by A and B were analyzed by paired t-test. Results： There were significant differences （t=28.74, P〈0.001） in evaluation of blood-supply artery for hepatic tumor between best monoergy vessel reconstruction image and combined energic vessel reconstruction image, and spectral CT best monoergy vessel imaging was superior-to-c-ombined energi irrraging regarding the evaluation of tumor artery vessel. Conclusion： As an evaluation method before operation, spectral CT best monoergy imaging can significantly enhance the signal/noise rate of hepatic tumor vessel without debasing the quality of image, which is conducive to detecting small vessels in the region of interest.

关 键 词：肝癌 血管造影 能谱成像 

分 类 号：R735.7[医药卫生—肿瘤]