Magnetic resonance imaging ancillary features used in Liver Imaging Reporting and Data System:An illustrative review

• 作者: António P Matos David Campos-Correia Filipa Figueiredo Joao Cruz Miguel Ramalho
• 来源期刊: 世界放射学杂志：英文版（电子版）
• 学科: 医学
• 关键词: Hepatocellular carcinoma Ancillary FEATURES Magnetic resonance IMAGING LIVER IMAGING REPORTING and Data System CIRRHOSIS LIVER
• 年，卷（期）: 2018,（2）
• 页码范围: 9-23
• 页数: 15页
• 分类号: R

摘要

Hepatocellular carcinoma(HCC)usually develops in the setting of chronic liver disease.In the adequate clinical context,both multiphasic contrast-enhanced CT and magnetic resonance imaging are non-invasive modalities that allow accurate diagnosis and staging of HCC,although the latter demonstrates greater sensitivity and specificity.Imaging criteria for HCC diagnosis rely on hemodynamic features such as hyperenhancement in the arterial phase and washout in the portal or equilibrium phase.However,imaging performance drops considerably for small(<20 mm)nodules because their tendency to exhibit atypical enhancement patterns.In order to improve accuracy in the diagnosis and staging of HCC,particularly in cases of atypical nodules,ancillary features,i.e.,imaging characteristics that modify the likelihood of HCC,have been described and incorporated into clinical reports,especially in Liver Imaging Reporting and Data System.In this paper,ancillary imaging features will be reviewed and illustrated.