A Splitting-Based Iterative Algorithm for Accelerated Statistical X-Ray CT Reconstruction

Statistical image reconstruction using penalized weighted least-squares (PWLS) criteria can improve image-quality in X-ray computed tomography (CT). However, the huge dynamic range of the statistical weights leads to a highly shift-variant inverse problem making it difficult to precondition and acce...

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Vydáno v:	IEEE transactions on medical imaging Ročník 31; číslo 3; s. 677 - 688
Hlavní autoři:	Ramani, S., Fessler, J. A.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States IEEE 01.03.2012 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Acceleration Algorithms Alternating minimization Computed tomography Computer Simulation Convergence Head - diagnostic imaging Humans Image reconstruction iterative algorithm Iterative methods Least-Squares Analysis method of multipliers Minimization Models, Biological Optimization Phantoms, Imaging Radiographic Image Enhancement - methods regularization statistical image reconstruction Studies Tomography, X-Ray Computed - methods
ISSN:	0278-0062, 1558-254X, 1558-254X
On-line přístup:	Získat plný text
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