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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Bibliographische Detailangaben

Veröffentlicht in:	Physics in medicine & biology Jg. 50; H. 21; S. N299
Hauptverfasser:	Zhang, Jin, Shi, Daxin, Anastasio, Mark A, Sillanpaa, Jussi, Chang, Jenghwa
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	England 07.11.2005
Schlagworte:	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
Online-Zugang:	Weitere Angaben
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