Journal
RADIOLOGY
Volume 271, Issue 2, Pages 327-342Publisher
RADIOLOGICAL SOC NORTH AMERICA
DOI: 10.1148/radiol.14131480
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Recent technologic advances in computed tomography (CT)-enabling the nearly simultaneous acquisition of clinical images using two different x-ray energy spectra-have sparked renewed interest in dual-energy CT. By interrogating the unique characteristics of different materials at different x-ray energies, dual-energy CT can be used to provide quantitative information about tissue composition, overcoming the limitations of attenuation-based conventional single-energy CT imaging. In the past few years, intensive research efforts have been devoted to exploiting the unique and powerful opportunities of dual-energy CT for a variety of clinical applications. This has led to CT protocol modifications for radiation dose reduction, improved diagnostic performance for detection and characterization of diseases, as well as image quality optimization. In this review, the authors discuss the basic principles, instrumentation and design, examples of current clinical applications in the abdomen and pelvis, and future opportunities of dual-energy CT. (C) RSNA, 2014
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