Patel Bhavik N, Marin Daniele
Division of Abdominal Imaging, Department of Radiology, Stanford University School of Medicine, 300 Pasteur Drive, H1307, Stanford, CA 94305, USA.
Division of Abdominal Imaging, Department of Radiology, Duke University, DUMC 3808, Durham, NC 27710, USA.
Radiol Clin North Am. 2018 Jul;56(4):641-647. doi: 10.1016/j.rcl.2018.03.006. Epub 2018 May 4.
Dual-energy computed tomography (DECT) offers several advantages over conventional single-energy CT. These advantages include improved image quality, beam hardening correction, and metal artifact reduction. Additionally, DECT allows derivation of quantitative information through material decomposition analysis. Although newer third-generation rapid-kilovolt switching and dual-source DECT scanners have significantly improved in image quality and workflow compared with initial iterations and early scanners, sources of potential image quality degradation can exist secondary to the inherent capabilities in which the image acquisition occurs.
双能计算机断层扫描（DECT）与传统单能CT相比具有多个优势。这些优势包括图像质量提高、束硬化校正和金属伪影减少。此外，DECT允许通过物质分解分析得出定量信息。尽管更新的第三代快速千伏切换和双源DECT扫描仪与最初的版本和早期扫描仪相比在图像质量和工作流程方面有了显著改进，但由于图像采集所固有的能力，仍可能存在潜在的图像质量下降源。
