Ahmad Muhammad Israr, Liu Lulu, Sheikh Adnan, Nicolaou Savvas
Department of Radiology, Univeristy of British Columbia, Vancouver, Canada.
BJR Open. 2024 Sep 11;6(1):tzae025. doi: 10.1093/bjro/tzae025. eCollection 2024 Jan.
Dual-energy computed tomography (DECT) is an advanced imaging technique that acquires data using two distinct X-ray energy spectra, typically at 80 and 140 kVp, to differentiate materials based on their atomic number and electron density. This capability allows for the enhanced visualisation of various pathologies, including bone marrow oedema (BMO), by providing high-resolution images with notable energy spectral separation while maintaining radiation doses comparable to conventional CT. DECT's ability to create colour-coded virtual non-calcium (VNCa) images has proven particularly valuable in detecting traumatic bone marrow lesions (BMLs) and subtle fractures, offering a reliable alternative or complement to MRI. DECT has emerged as a significant tool in the detection and characterisation of bone marrow pathologies, especially in traumatic injuries. Its ability to generate high-resolution images and distinguish between different tissue types makes it a valuable asset in clinical diagnostics. With its comparable diagnostic accuracy to MRI and the added advantage of reduced examination time and increased availability, DECT represents a promising advancement in the imaging of BMO and related conditions.
双能计算机断层扫描（DECT）是一种先进的成像技术，它使用两种不同的X射线能谱（通常为80和140 kVp）获取数据，以根据材料的原子序数和电子密度来区分材料。这种能力通过提供具有显著能谱分离的高分辨率图像，同时保持与传统CT相当的辐射剂量，从而增强了对包括骨髓水肿（BMO）在内的各种病变的可视化。DECT创建彩色编码虚拟去钙（VNCa）图像的能力在检测创伤性骨髓损伤（BMLs）和细微骨折方面已被证明特别有价值，为MRI提供了一种可靠的替代或补充方法。DECT已成为检测和表征骨髓病变，特别是创伤性损伤的重要工具。它生成高分辨率图像并区分不同组织类型的能力使其成为临床诊断中的一项宝贵资产。凭借与MRI相当的诊断准确性以及减少检查时间和增加可用性的额外优势，DECT代表了BMO及相关病症成像方面的一项有前景的进展。
