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.
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.
Authors: Martin Beeres; Jesko Trommer; Claudia Frellesen; Nour-Eldin A Nour-Eldin; Jan E Scholtz; Eva Herrmann; Thomas J Vogl; Julian L Wichmann Journal: Int J Cardiovasc Imaging Date: 2015-08-02 Impact factor: 2.357
Authors: Joshua D Evans; Bruce R Whiting; Joseph A O'Sullivan; David G Politte; Paul H Klahr; Yaduo Yu; Jeffrey F Williamson Journal: Med Phys Date: 2013-12 Impact factor: 4.071
Authors: Wei Zhou; Dilbar Abdurakhimova; Michael Bruesewitz; Ahmed Halaweish; Cynthia H McCollough; Shuai Leng Journal: Proc SPIE Int Soc Opt Eng Date: 2018-03
Authors: Benjamin M Yeh; Paul F FitzGerald; Peter M Edic; Jack W Lambert; Robert E Colborn; Michael E Marino; Paul M Evans; Jeannette C Roberts; Zhen J Wang; Margaret J Wong; Peter J Bonitatibus Journal: Adv Drug Deliv Rev Date: 2016-09-09 Impact factor: 15.470