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

Emil Y. Sidky; Lifeng Yu; Xiaochuan Pan

doi:10.1117/12.535989

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

Emil Y. Sidky, Lifeng Yu, Xiaochuan Pan

Radiology

Research output: Contribution to journal › Conference article › peer-review

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.

Original language	English (US)
Pages (from-to)	856-860
Number of pages	5
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5368
Issue number	2
DOIs	https://doi.org/10.1117/12.535989
State	Published - 2004
Event	Medical Imaging 2004: Physics of Medical Imaging - San Diego, CA, United States Duration: Feb 15 2004 → Feb 17 2004

Keywords

Expectation-maximization
Singular value decomposition
X-ray spectrum reconstruction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.535989

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title = "Application of expectation maximization to x-ray spectrum estimation for medical accelerators from transmission data",

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.",

keywords = "Expectation-maximization, Singular value decomposition, X-ray spectrum reconstruction",

author = "Sidky, {Emil Y.} and Lifeng Yu and Xiaochuan Pan",

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journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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AU - Sidky, Emil Y.

AU - Yu, Lifeng

AU - Pan, Xiaochuan

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

KW - Expectation-maximization

KW - Singular value decomposition

KW - X-ray spectrum reconstruction

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DO - 10.1117/12.535989

M3 - Conference article

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VL - 5368

SP - 856

EP - 860

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

IS - 2

T2 - Medical Imaging 2004: Physics of Medical Imaging

Y2 - 15 February 2004 through 17 February 2004

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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