Radiology:超声衰减成像在非酒精性脂肪性肝炎诊断中的应用

2022-09-17 shaosai MedSci原创

非酒精性脂肪肝的肝脏疾病谱从简单的脂肪变性到肝硬化,其中包括非酒精性脂肪性肝炎(NASH),其特点是脂肪变性、肝小叶炎症和肝细胞气球样变。

众所周知非酒精性脂肪肝(NAFLD)是肝脏疾病最重要的原因之一,严重时会导致终末期肝病。非酒精性脂肪肝的肝脏疾病谱从简单的脂肪变性到肝硬化,其中包括非酒精性脂肪性肝炎(NASH),其特点是脂肪变性、小叶炎症和肝细胞气球样变

为了对非酒精性脂肪肝进行更准确、更少的侵入性诊断过去十年中,许多研究对US和MRI的使用进行了评估。最近,一些单中心和回顾性研究表明,与肝脏活检相比,使用衰减成像(ATI)和二维(2D)剪切波弹性成像(SWE)可以同时评估代表NASH病理成分的脂肪变性、炎症和纤维化,具有显著的准确性。根据这些研究,用ATI获得的衰减系数(AC)在检测不同程度的肝脏脂肪变性方面显示出良好的诊断性能。此外,使用二维SWE获得的肝脏硬度(LS)和弥散斜率(DS)值分别与病理肝脏纤维化和小叶炎症活动呈正相关关系。

近日,发表Radiology杂志的一项研究评估了在非酒精性脂肪肝患者中使用ATI的ACs和二维SWE的LS及DS值的多参数US的诊断性能,为非酒精性脂肪肝患者病情的无创准确评估提供了技术支持。

项前瞻性研究在2019年12月至2021年6月期间疑似非酒精性脂肪性肝炎(NASH)的患者进行了招募每位参与者均计划在五家三甲医院接受肝脏活检。在手术前,所有参与者根据研究方案进行了ATI和2D SWE US检查。进行多变量线性回归分析以确定AC、LS和DS的重要决定因素。诊断性能是根据受试者工作特性曲线下的面积(AUCs)决定的。

共评估了132名参与者(中位年龄,38岁;IQR,27-54岁;69名女性)。在参与者的特征中,包括病理结果、人口统计学特征、体重指数和血清标志物,其中AC的肝脂肪变性(P < .001)、DS的小叶炎症活动(P = .007),LS的纤维化(P = .01)和小叶炎症活动(P = .04)是重要的决定因素。在组织病理学检查中,132名参与者中有53人(40.2%)患有NASH。与血清标记物或其他US参数(AUC≤0.88)相比,使用AC和DS的分数的未加权总和得到的风险评分系统在检测NASH方面显示出最佳的诊断性能(AUC=0.94;95%CI:0.89,0.98;所有P<0.05)。


 衰减成像的衰减系数、血清丙氨酸氨基转移酶(ALT)水平、二维(2D)剪切波弹性成像(SWE)的剪切波斜率、二维SWE的肝脏硬度值以及多参数US检查的风险评分在组织病理学检查时检测非酒精性脂肪性肝炎的ROC曲线

本研究表明,US成像和二维剪切波弹性成像对评估肝脏脂肪变性、小叶炎症和纤维化具有重要的临床价值。其中,使用衰减系数和弥散斜率得到的风险评分系统对非酒精性脂肪性肝炎显示出最佳的诊断性能。 

原文出处:

Jong Keon Jang,Eun Sun Lee,Jung Wook Seo,et al.Two-dimensional Shear-Wave Elastography and US Attenuation Imaging for Nonalcoholic Steatohepatitis Diagnosis: A Cross-sectional, Multicenter Study.DOI:10.1148/radiol.220220

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    2023-06-08 qjddjq
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    2023-02-06 12422320m94暂无昵称 来自江苏省

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