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Proceedings Paper

Application of expectation maximization to x-ray spectrum estimation for medical accelerators from transmission data
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Paper 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.

Paper Details

Date Published: 6 May 2004
PDF: 5 pages
Proc. SPIE 5368, Medical Imaging 2004: Physics of Medical Imaging, (6 May 2004); doi: 10.1117/12.535989
Show Author Affiliations
Emil Y. Sidky, Univ. of Chicago (United States)
Lifeng Yu, Univ. of Chicago (United States)
Xiaochuan Pan, Univ. of Chicago (United States)


Published in SPIE Proceedings Vol. 5368:
Medical Imaging 2004: Physics of Medical Imaging
Martin J. Yaffe; Michael J. Flynn, Editor(s)

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