Toronto Joint Department of Medical Imaging, University Health Network, Sinai Health System and Women's College Hospital, University of Toronto, Toronto, ON, Canada.
Abdominal Imaging Section, Department of Radiology, University of Washington School of Medicine, Seattle, WA, 98195, USA.
Abdom Radiol (NY). 2020 Nov;45(11):3413-3424. doi: 10.1007/s00261-020-02702-4. Epub 2020 Aug 8.
Dual-energy CT (DECT) can be defined as the use of two different energy levels to identify and quantify material composition. Since its inception, DECT has benefited from remarkable improvements in hardware and clinical applications. DECT enables accurate identification and quantification of multiple materials, including fat, iron, and iodine. As a consequence, multiple studies have investigated the potential role of DECT in the assessment of diffuse liver diseases. While this role is evolving, this article aims to review the most relevant literature on use of DECT for assessment of diffuse liver diseases. Moreover, the basic concepts on DECT techniques, types of image reconstruction, and DECT-dedicated software will be described, focusing on the areas that are most relevant for the evaluation of diffuse liver diseases. Also, we will review the evidence of added value of DECT in detection and assessment of hepatocellular carcinoma which is a known risk in patients with diffuse liver disease.
双能 CT（DECT）可以定义为使用两种不同的能量水平来识别和量化物质成分。自诞生以来，DECT 在硬件和临床应用方面取得了显著的进步。DECT 能够准确识别和量化多种物质，包括脂肪、铁和碘。因此，多项研究探讨了 DECT 在弥漫性肝脏疾病评估中的潜在作用。虽然这一作用仍在不断发展，但本文旨在回顾 DECT 用于评估弥漫性肝脏疾病的相关文献。此外，还将描述 DECT 技术的基本概念、图像重建类型和 DECT 专用软件，重点介绍与评估弥漫性肝脏疾病最相关的领域。还将回顾 DECT 在检测和评估弥漫性肝脏疾病患者已知风险的肝细胞癌中的附加价值证据。
