MRI检查对肝脏Ⅰ、Ⅳ段CT上不典型脂肪肝诊断的影像研究  

Imaging study of MRI on atypical fatty liver diagnosis on CT of liverⅠand Ⅳ

作　　者：谭迎杰 黄展鸿 Tan Yingjie;Huang Zhajnhong(CT and MRI Room,Lufeng Peopled Hospital,Guangdong Province,Lufeng,Guangdong 516500)

机构地区：[1]广东省陆丰市人民医院CT、MRI室,广东陆丰516500

出　　处：《现代医用影像学》2020年第2期225-228,共4页Modern Medical Imageology

摘　　要：目的:探讨MRI检查对肝脏Ⅰ、Ⅳ段CT上不典型脂肪肝诊断的影像。方法:将2018年2月到2019年9月我院收治的45例肝脏Ⅰ、Ⅳ段CT上不典型脂肪肝患者作为研究对象,对其予以CT与MRI扫描检查,对患者的病灶类型及其病灶分布情况、CT表现与MRI表现进行观察。结果:①15例患者为局灶性脂肪肝类型,共18个病灶,其中12例患者为单发,3例患者为双发;在病灶位置方面,Ⅰ段患者共3例,共3个病灶,Ⅳ段患者共12例,共15个病灶。②30例患者肝岛类型,共36个病灶,其中23例患者为单发,7例患者为双发;在病灶位置方面,Ⅰ段患者共5例,共5个病灶,Ⅳ段患者共25例,共31个病灶。经CT检查并未能够对患者进行确诊;在MRI常规扫描中仅能够对少数具有较多脂肪含量的病灶进行辨认;与反相位像上的信号强度及周围肝组织病变相比,18个局灶性脂肪肝病灶在同相位像上的信号具有更高的强度表现;在反相位像上,36个肝岛病灶均表现出较强的信号分布特点,而周围肝组织的信号强度则较低,从而明确肝岛与正常肝组织界限。结论:MRI检查对肝脏Ⅰ、Ⅳ段CT上不典型脂肪肝诊断具有积极影响,不仅能够明确患者的疾病类型,同时能够明确病灶位置。Objective:To investigate the effect of MRI on the diagnosis of atypical fatty liver in segmentⅠand IV CT of liver.Methods:From February 2018 to September 2019,45 patients with atypical fatty liver on segment I and IV CT were examined by CT and MRI.The types of lesions,the distribution of lesions,CT findings and MRI findings were observed.Results:1,15 patients were focal fatty liver with a total of 18 lesions,of which 12 patients were single and 3 patients were double.In terms of lesion location,there were 3 patients with 3 lesions in segment I.There were 12 patients with segment IV with 15 lesions;2,30 patients with liver island type with 36 lesions,23 patients with single lesion and 7 patients with double focus,5 patients with segmentⅠand 25 patients with segment IV with 31 lesions.CT examination can not confirm the patients;in the conventional MRI scan,only a few lesions with more fat content can be identified;compared with the signal intensity on the reverse phase image and the surrounding liver tissue,18 focal fatty liver lesions have higher signal intensity on the same phase image;on the reverse phase image,the signal intensity of 18 focal fatty liver lesions on the same phase image is higher than that on the reverse phase image.36 lesions of the liver island showed strong signal distribution,while the signal intensity of the surrounding liver tissue was lower,thus defining the boundary between the liver island and the normal liver tissue.Conclusion:MRI has a positive effect on the diagnosis of atypical fatty liver in segment I and IV CT.It can not only determine the type of disease,but also determine the location of the lesion.

关 键 词：MRI检查 肝脏Ⅰ、Ⅳ段CT上不典型脂肪肝 局灶性脂肪肝 肝岛 

分 类 号：R445.2[医药卫生—影像医学与核医学] R575.5[医药卫生—诊断学]