透过眩光观察：使用双能CT克服骨放射学中的金属伪影问题。
Peering through the glare: using dual-energy CT to overcome the problem of metal artefacts in bone radiology.
作者信息
Coupal Tyler M, Mallinson Paul I, McLaughlin Patrick, Nicolaou Savvas, Munk Peter L, Ouellette Hugue
机构信息
Michael G. DeGroote School of Medicine, McMaster University, 1280 Main St W, Hamilton, ON, Canada, L8S 4 K1.
出版信息
Skeletal Radiol. 2014 May;43(5):567-75. doi: 10.1007/s00256-013-1802-5. Epub 2014 Jan 17.
OBJECTIVE
Imaging of patients with large metal implants remains one of the most difficult endeavours for radiologists. This article reviews the theory of dual-energy CT (DECT) and its ability to reduce metal artefact, thus enhancing the diagnostic value of musculoskeletal imaging. The strengths, weaknesses, and alternative applications of DECT, as well as areas requiring further research, will also be reviewed.
CONCLUSION
Currently, DECT stands as the frontier for metal artefact reduction in musculoskeletal imaging. DECT requires no additional radiation and provides significantly enhanced image acquisition. When considered along with its other capabilities, DECT is a promising new tool for musculoskeletal and trauma radiologists.
目的
对有大型金属植入物的患者进行成像，仍然是放射科医生面临的最困难的任务之一。本文回顾了双能CT（DECT）的理论及其减少金属伪影的能力，从而提高肌肉骨骼成像的诊断价值。还将对DECT的优点、缺点、替代应用以及需要进一步研究的领域进行综述。
结论
目前，DECT是肌肉骨骼成像中减少金属伪影的前沿技术。DECT无需额外辐射，并能显著增强图像采集。结合其其他功能来看，DECT是肌肉骨骼和创伤放射科医生的一种有前景的新工具。
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