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6 May 2004 Application of expectation maximization to x-ray spectrum estimation for medical accelerators from transmission data
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Abstract
Accurate computation of dose delivered to the patient depends on knowledge of the x-ray spectrum of therapy, x-ray beams. This work applies the expectation-maximization (EM) method to the problem of reconstructing the x-ray source spectrum from transmission data of Aluminum and Lead. The proposed EM method is compared to an algebraic approach for solving the corresponding linear system of equations.
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Emil Y. Sidky, Lifeng Yu, and Xiaochuan Pan "Application of expectation maximization to x-ray spectrum estimation for medical accelerators from transmission data", Proc. SPIE 5368, Medical Imaging 2004: Physics of Medical Imaging, (6 May 2004); https://doi.org/10.1117/12.535989
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