Patent ID: 8417467

Claim:
A method for estimating an activity of one or more radio-nuclides, the method comprising: receiving one or more templates, the one or more templates corresponding to one or more radio-nuclides which contribute to a probable solution; receiving one or more weighting factors, each weighting factor representing a contribution of one radio-nuclide to the probable solution; computing an effective areal density for each of the one more radio-nuclides; computing an effective atomic number (Z) for each of the one more radio-nuclides; computing an effective metric for each of the one or more radio-nuclides; and computing, using a processor, an estimated activity for each of the one or more radio-nuclides based at least in part on one or more of: one or more of the one or more weighting factors; one or more biasing coefficients; the effective areal density for each of the one or more radio-nuclides; the effective atomic number (Z) for each of the one or more radio-nuclides; and the effective metric for each of the one or more radio-nuclides.