Pearls, Pitfalls, and Problems in Dual-Energy Computed Tomography Imaging of the Body

Radiol Clin North Am. 2018 Jul;56(4):625-640. doi: 10.1016/j.rcl.2018.03.007.


Dual-energy computed tomography (DECT) is an exciting technology that is increasing in routine use and has the potential for significant clinical impact. With the advancement of DECT, it is important for radiologists to be aware of potential challenges with DECT acquisition and postprocessing, and to have a basic knowledge of unique artifacts and diagnostic pitfalls that can occur when interpreting DECT scans and DECT postprocessed images. This article serves as a practical overview of potential problems and diagnostic pitfalls associated with DECT, and steps that can be taken to avoid them.

Keywords: Abdominal imaging; Computed tomography; Dual-energy CT; Iodine-selective imaging.

Publication types

  • Review

MeSH terms

  • Artifacts*
  • Contrast Media
  • Diagnostic Errors / prevention & control*
  • Humans
  • Image Processing, Computer-Assisted / methods*
  • Iodine
  • Radiographic Image Enhancement / methods
  • Radiography, Dual-Energy Scanned Projection / methods*
  • Tomography, X-Ray Computed / methods*


  • Contrast Media
  • Iodine