Feasibility of dual-energy computed tomography in radiation therapy planning
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In this study, the noise level, effective atomic number (Z eff), accuracy of the computed tomography (CT) number, and the CT number to the relative electron density EDconversion curve were estimated for virtual monochromatic energy and polychromatic energy. These values were compared to the theoretically predicted values to investigate the feasibility of the use of dual-energy CT in routine radiation therapy planning. The accuracies of the parameters were within the range of acceptability. These results can serve as a stepping stone toward the routine use of dual-energy CT in radiotherapy planning.
KeywordsSpectral imaging Electron density Effective atomic number Effective energy
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- J. Hsieh, N. Chandra, S. Woloschek, B. Senzig, S. Aluri, T. Benson, X. Wu, D. Okerlund and B. Li, IEEE Nuclear Science Symposium Conference Record (2009), p. 3513.Google Scholar
- Gammex Inc. 006328-00-04 MANUAL Gammex 467 User’s Guide Manual.Google Scholar
- M. J. Berger, J. H. Hubbell, S. M. Seltzer, J. Chang, J. S. Coursey, R. Sukumar and D. S. Zucker, NIST Standard Reference Database 8 XGAM, http:// www.nist.gov/physlab/data/xcom/index.cfm (2005).Google Scholar
- J. H. Hubbell, Natl. Bur. Stand. U.S. Spec. Publ. Number NSRDS-NBS 29 U.S. GPO, Washington, D.C. (1969).Google Scholar
- M. Yang, Dissertations and Theses, http://digitalcommo ns.library.tmc.edu/utgsbs dissertations/167/ (2011).Google Scholar
- Mitchell M. Goodsitt, Emmanuel G. Christodoulou and Sandra C. Larson, Med. Phys. 38, 222 (2011).Google Scholar