磁共振弥散成像、非增强磁共振和多排CT对结直肠癌术后肝转移灶检出的对比分析  

Comparative Analysis of MR Diffusion-Weighted Imaging,Unenhanced MRI and Multirow CT in the Detection of Liver Metastases from Colorectal Cancer

作　　者：吴晶涛[1] 王立富[1] 王建平[2] 叶靖[1] 张萍[1] 

机构地区：[1]扬州大学医学院附属医院医学影像科,江苏扬州225001 [2]南方医科大学附属南方医院影像中心

出　　处：《实用放射学杂志》2008年第12期1621-1623,1629,共4页Journal of Practical Radiology

摘　　要：目的比较磁共振扩散加权成像、非增强磁共振和多排CT对结直肠癌肝转移的诊断价值。方法27例结直肠癌患者行肝脏磁共振扩散加权成像、非增强磁共振和多排CT检查。阅片前告知阅片者患者为结直肠癌术后,但不提供临床病史和既往影像学资料。结果多排CT、非增强磁共振和扩散加权成像对肝转移灶的敏感性分别为72%(45/63)、76%(48/63)和93%(58/63),扩散加权成像对肝转移灶具有更高的敏感性且与多排CT或非增强MRI具有显著差异。结论磁共振扩散加权成像对结直肠癌肝转移灶的检出率高于多排CT和非增强MRI。Objective To compare the value of MR diffusion -weighted imaging（ DWI） , unenhanced MRI and multirow CT in the detection of hepatic metastases from colorectal cancer. Methods 27 patients with hepatic metastases from colorectal carcinoma were examined with DWI, unenhanced MRI and multirow CT. Images were analyzed blindly by readers and compared between them. Results The sensitivities in detecting the hepatic metastases were 72% （45/63） ,76% （48/63） and 93% （58/63） with CT,MRI and DWI,respectively. DWI was of higher sensitivity than that either multirow CT or unenhanced MRI and there were significant difference. Conclusion DWI is superior to unenhanced MRI and multirow CT in the detection of hepatic metastases from colorectal cancer.

关 键 词：磁共振扩散加权成像 结肠癌 肝转移 

分 类 号：R445.2[医药卫生—影像医学与核医学] R735.35[医药卫生—诊断学]