临床肝胆病杂志2017，Vol.33Issue(12)：2366-2371,6.DOI:10.3969/j.issn.1001-5256.2017.12.022
瞬时弹性成像技术诊断非酒精性脂肪性肝病的性能评估
Performance of transient elastography in diagnosis of nonalcoholic fatty liver disease
摘要
Abstract
Objective To investigate the value of transient elastography (TE)in the diagnosis of nonalcoholic fatty liver disease (NAFLD). Methods A total of 21 patients without fatty liver disease and 92 patients with NAFLD,who visited Traditional Chinese Medi-cine Hospital of Xinjiang Uygur Autonomous Region from June to December,2016,were enrolled. Their general information was collected and body mass index (BMI)was calculated. Routine blood test,liver function evaluation,and measurement of blood lipid,serum insulin, and alpha - fetoprotein were performed,and liver CT and FibroTouch were performed. The receiver operating characteristic (ROC)curve was plotted with liver/ spleen CT ratio as diagnostic criteria,and the ROC curve was used to evaluate the ability of controlled attenuation pa-rameter (CAP)to diagnose NAFLD. The area under the ROC curve (AUC)was calculated,the Z test was used to evaluate diagnostic effec-tiveness,and Youden index was used to determine the optimal cut - off value. The t - test was used for comparison of normally distributed continuous data between two groups;a one - way analysis of variance was used for comparison between multiple groups,and the least signifi-cant difference t - test was used for further comparison between any two groups. The Mann - Whitney U test was used for comparison of non- normally distributed continuous data between two groups,and the Kruskal - Wallis H test was used for comparison between multiple groups. The chi - square test was used for comparison of categorical data between groups. Results There were significant differences in age,alanine aminotransferase (ALT),aspartate aminotransferase (AST),serum insulin,fat attenuation,and liver stiffness measurement (LSM)between the patients without fatty liver disease and those with varying degrees of NAFLD (all P < 0. 05). The severe NAFLD group had a significantly lower mean age than the non - fatty liver disease group (P < 0. 001). There was a significant difference in CAP between the non - fatty liver disease group and the groups with varying degrees of NAFLD (all P < 0. 001),while there was no significant difference in CAP between the moderate and severe NAFLD groups (P = 0. 127). There was a significant difference in LSM between the non - fatty liv-er disease group and the moderate NAFLD group (P = 0. 034),as well as between the non - fatty liver disease group and the severe NAFLD group (P < 0. 001),while there was no significant difference between the moderate and severe NAFLD groups (P = 0. 327). There were significant differences in the levels of ALT and AST between the non - fatty liver disease group and the groups with varying degrees of NAFLD (all P < 0. 001),and the severe NAFLD group had significantly higher levels of ALT and AST than the mild NAFLD group (both P =0. 001). There was a significant difference in the level of insulin between the non - fatty liver disease group and the groups with varying de-grees of NAFLD,while there was no significant difference between the groups with varying degrees of NAFLD (all P > 0. 05). The optimal cut - off values of CAP for the diagnosis of mild,moderate,and severe NAFLD were 244 dB/ m,272 dB/ m,and 272 dB/ m,respectively, with AUC of 0. 778 (95% confidence interval [CI]:0. 663 - 0. 894),0. 893 (95% CI:0. 809 - 0. 976),and 0. 942 (95% CI:0. 886 -0. 998)(all P < 0. 001). Conclusion TE is a reliable noninvasiveness method for the diagnosis of NAFLD. CAP can accurately and quan-titatively evaluate the degree of NAFLD and effectively differentiate mild NAFLD from moderate or severe NAFLD and thus has a good value in the grading of NAFLD. But it is difficult to differentiate moderate NAFLD from severe NAFLD.关键词
非酒精性脂肪性肝病/弹性成像技术/诊断Key words
nonalcoholic fatty liver disease/elasticity imaging techniques/diagnosis分类
医药卫生引用本文复制引用
庄小芳,孙洁,王晓波,王燕,吴琦琦,王晓忠..瞬时弹性成像技术诊断非酒精性脂肪性肝病的性能评估[J].临床肝胆病杂志,2017,33(12):2366-2371,6.基金项目
新疆维吾尔自治区科技援疆计划(2016E02067) （2016E02067）
