The present invention provides a material decomposition method capable of determining the distribution of density and constituent material concentration throughout an imaged object. The concentration, in the form of a mass fraction, mass percent, weight fraction, or weight percent, is determined from CT images acquired at different energy levels. The ratio of attenuation coefficients associated with one energy level to attenuation coefficients associated with another energy level is determined and used as an index in a lookup table to determine the concentration of a given material throughout the imaged object.
X. Liu et al., "System and Method for Quantitative Imaging of Chemical Composition to Decompose Multiple Materials," U.S. Patents, United States Patent and Trademark Office, Jan 2009.
Nuclear Engineering and Radiation Science
Patent Application Number
© 2011 Mayo Foundation for Medical Education and Research, All rights reserved.
01 Jan 2009