Parakh Anushri, Macri Francesco, Sahani Dushyant
Department of Radiology, Abdominal Imaging Division, Massachusetts General Hospital, White 270, 55 Fruit Street, Boston, MA 02114, USA.
Department of Radiology, Abdominal Imaging Division, Massachusetts General Hospital, White 270, 55 Fruit Street, Boston, MA 02114, USA; Department of Radiology, University Hospital of Nimes, Place di Pr Debre, Nimes 30029, France.
Radiol Clin North Am. 2018 Jul;56(4):601-624. doi: 10.1016/j.rcl.2018.03.002.
Evolution in computed tomography technology and image reconstruction have significantly changed practice. Dual energy computed tomography is being increasingly adopted owing to benefits of material separation, quantification, and improved contrast-to-noise ratio. The radiation dose can match that from single energy computed tomography. Spectral information derived from a polychromatic x-ray beam at different energies yields in image reconstructions that reduce the number of phases in a multiphasic examination and decrease the absolute amount of contrast media. This increased analytical and image processing capability provides new avenues for addressing radiation dose and iodine exposure concerns.
计算机断层扫描技术和图像重建的发展显著改变了医疗实践。由于具有物质分离、定量分析以及改善对比度噪声比等优势，双能计算机断层扫描的应用越来越广泛。其辐射剂量可与单能计算机断层扫描相匹配。在不同能量下由多色X射线束获得的光谱信息用于图像重建，可减少多期检查中的期数，并降低造影剂的绝对用量。这种增强的分析和图像处理能力为解决辐射剂量和碘暴露问题提供了新途径。
