Statistical image reconstruction for polyenergetic X-ray computed tomography

Statistical image reconstruction for polyenergetic X-ray computed tomography. Elbakri, I. A. & Fessler, J. A. IEEE Trans. Med. Imag., 21(2):89–99, February, 2002.
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@ARTICLE{elbakri:02:sir,
 author = {I. A. Elbakri and J. A. Fessler},
 title = {Statistical image reconstruction for polyenergetic {X-ray} computed tomography},
 journal = {{IEEE Trans. Med. Imag.}},
 volume = 21,
 number = 2,
 pages = {{89--99}},
 month = feb,
 pm = 11929108,
 errata = {In (35), the numerator should be $\bar{Y}_i(s_i^n) + r_i$.
After (42) we should define $l_i^n = m'(E) s_i^n$.
In (45) there should be no $\times$.
There are sign issues with (47) that continue beyond.
Need to add + r_i to \Ybi in (47) and before (53).
},
 doi = {10.1109/42.993128},
 year = 2002
}

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