Weighted expectation maximization reconstruction algorithms with application to gated megavoltage tomography

We propose and investigate weighted expectation maximization (EM) algorithms for image reconstruction in x-ray tomography. The development of the algorithms is motivated by the respiratory-gated megavoltage tomography problem, in which the acquired asymmetric cone-beam projections are limited in num...

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Vydané v:	Physics in medicine & biology Ročník 50; číslo 21; s. N299
Hlavní autori:	Zhang, Jin, Shi, Daxin, Anastasio, Mark A, Sillanpaa, Jussi, Chang, Jenghwa
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	England 07.11.2005
Predmet:	Algorithms Computer Simulation Humans Image Processing, Computer-Assisted - methods Models, Statistical Pattern Recognition, Automated Phantoms, Imaging Radiographic Image Interpretation, Computer-Assisted - methods Software Tomography, X-Ray - methods
ISSN:	0031-9155
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