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

6 May 2004 Application of expectation maximization to x-ray spectrum estimation for medical accelerators from transmission data

Emil Y. Sidky, Lifeng Yu, Xiaochuan Pan

Author Affiliations +

Proceedings Volume 5368, Medical Imaging 2004: Physics of Medical Imaging; (2004) https://doi.org/10.1117/12.535989
Event: Medical Imaging 2004, 2004, San Diego, California, United States

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.

Citation Download Citation

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

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available