Department of Diagnostic and Interventional Radiology, Göttlicher Heiland Krankenhaus, Barmherzige Schwestern Krankenhaus, and Sankt Josef Krankenhaus, Vinzenzgruppe, Wien, Austria.
Rofo. 2023 Jun;195(6):486-494. doi: 10.1055/a-1990-5924. Epub 2023 Feb 1.
The Liver Imaging Reporting and Data System (LI-RADS v2018) standardizes the interpretation and reporting of MDCT and MRI examinations in patients at risk for hepatocellular carcinoma (HCC).
For focal liver lesions (called "observations") it assigns categories (LR-1 to 5, LR-M, LR-TIV, LR-TR), which reflect the probability of benignity or malignancy (HCC or other non-HCC malignancies) of the respective observation. The categories assigned are based on major and ancillary image features, which have been developed by the American College of Radiology (ACR), revised several times (now v2018), and validated in many studies. The value of ancillary features to modify LI-RADS categories assigned to observations based on major features is shown.
This review summarizes the relevant CT and MRI features and presents a step-by-step approach for readers not familiar with LI-RADS on how to use the system. Relevant imaging features and the value of different modalities (contrast-enhanced CT, MRI with extracellular gadolinium chelates or liver-specific contrast agents) is explained.
The widespread adoption of LI-RADS for CT/MRI reporting in high-risk patients would help to reduce inter-reader variability. It could improve communication between radiologists, oncologists, hepatologists, pathologists, and liver surgeons, and lead to better patient management.
· LI-RADS has been developed and revised to address the need for improved diagnosis and standardized categorization of findings in chronic liver disease.. · CT/MRI LI-RADS consists of major criteria and ancillary features to classify observations.. · LI-RADS terminology helps to clarify the communication of liver observations between radiologists and referring physicians..
· Schima W, Kopf H, Eisenhuber E. LI-RADS made Easy. Fortschr Röntgenstr 2023; 195: 486 - 494.
肝脏影像报告和数据系统（LI-RADS v2018）规范了 MDCT 和 MRI 检查在肝细胞癌（HCC）高危患者中的解读和报告。
对于局灶性肝脏病变（称为“观察”），它分配类别（LR-1 至 5、LR-M、LR-TIV、LR-TR），反映了各自观察的良性或恶性（HCC 或其他非 HCC 恶性肿瘤）的概率。分配的类别基于美国放射学院（ACR）开发的主要和辅助图像特征，这些特征已多次修订（现为 v2018），并在许多研究中得到验证。显示了辅助特征对基于主要特征分配给观察的 LI-RADS 类别的修改价值。
本综述总结了相关的 CT 和 MRI 特征，并为不熟悉 LI-RADS 的读者提供了逐步使用该系统的方法。解释了相关的成像特征和不同模式（增强 CT、含外源性钆螯合物的 MRI 或肝脏特异性对比剂）的价值。
LI-RADS 在高危患者的 CT/MRI 报告中的广泛采用将有助于减少读者间的变异性。它可以改善放射科医生、肿瘤学家、肝病学家、病理学家和肝外科医生之间的沟通，并导致更好的患者管理。
·LI-RADS 是为了满足提高慢性肝病诊断和标准化分类的需要而开发和修订的。·CT/MRI LI-RADS 由主要标准和辅助特征组成，用于分类观察。·LI-RADS 术语有助于澄清放射科医生和转诊医生之间的肝脏观察结果的沟通。
