Dual-energy CT-based monochromatic imaging.

Research output: Contribution to journalReview articlepeer-review

358 Scopus citations


OBJECTIVE: We summarize how virtual monochromatic images are synthesized from dual-energy CT using image-domain and projection-domain methods. The quality of virtual monochromatic images is compared with that of polychromatic single-energy images acquired at different tube potentials and the same radiation dose. Clinical applications of dual-energy CT-based virtual monochromatic imaging are reviewed, including beam-hardening correction, contrast and noise optimization, metal artifact reduction, and material differentiation. CONCLUSION: Virtual monochromatic images synthesized from dual-energy CT data have the potential to reduce beam-hardening artifacts and to provide quantitative measurements. If there is no desire to obtain material-specific information or to correct for metal or beam-hardening artifacts from the dual-energy data, however, it is better to perform a conventional single-energy scan at the optimal tube potential.

Original languageEnglish (US)
Pages (from-to)S9-S15
JournalAJR. American journal of roentgenology
Issue number5 Suppl
StatePublished - Nov 2012

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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