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      Dual-Energy Computed Tomography Characterization of Urinary Calculi: Basic Principles, Applications and Concerns.

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          Abstract

          Dual-energy computed tomography (DECT) is based on obtaining 2 data sets with different peak kilovoltages from the same anatomical region, and material decomposition based on attenuation differences at different energy levels. Several DECT technologies are available such as: the dual-source CT, the fast kilovoltage-switching method, and the sandwich detectors technique. Calculi are detectable using iodine subtraction techniques. DECT also helps characterization of renal stone composition. The advanced postprocessing application enables differentiation of various renal stone types. Calculation of water content using spectral imaging is useful to diagnose urinary obstruction.

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          Author and article information

          Journal
          Curr Probl Diagn Radiol
          Current problems in diagnostic radiology
          Elsevier BV
          1535-6302
          0363-0188
          July 18 2015
          : 44
          : 6
          Affiliations
          [1 ] Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
          [2 ] Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA. Electronic address: habujudeh@partners.org.
          Article
          S0363-0188(15)00058-4
          10.1067/j.cpradiol.2015.04.003
          26183068
          caf58195-4c91-446e-bede-01771fb0e74a
          History

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