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Ordered subset expectation maximization

Known as: Osem, Ordered Subset Expectation Maximisation, Ordered-subset expectation maximization 
In mathematical optimization, the ordered subset expectation maximization (OSEM) method is an iterative method that is used in computed tomography… 
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Related topics

Related topics

6 relations
Expectation–maximization algorithmIterative methodList of algorithmsList of numerical analysis topics

Broader (1)

Medical imaging

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
2014
2014
Delay-QoS-driven spectrum and energy efficiency tradeoff
This paper presents a delay-QoS-driven spectrum and energy efficiency optimization transmission technique. In particular… 
2014
2014
Optimized Momentum Steps for Accelerating X-ray CT Ordered Subsets Image Reconstruction
Recently, we accelerated ordered subsets (OS) methods for low-dose X-ray CT image reconstruction using momentum techniques… 
2014
2014
Directed Metric Dimension of Oriented Graphs with Cyclic Covering
Let $D$ be a strongly connected oriented graph with vertex-set $V$ and arc-set $A$. The distance from a vertex $u$ to another… 
2013
2013
Metal artifact reduction in tomosynthesis by metal extraction and ordered subset-expectation maximization (OS-EM) reconstruction
Tomosynthesis is a useful imaging tool for breast, lung, and orthopedic diagnostics. Compared with computed tomography (CT… 
2013
2013
High quality ordered subset expectation maximization reconstruction algorithm based on multi-resolution for PET images
In Positron Emission Tomography(PET) imaging,Maximum Likelihood Expectation Maximization(MLEM) algorithm cannot be directly… 
2009
2009
An Symmetric Ordered Subset Expectation Maximization Accelerated Algorithm
The ordered subsets EM algorithm has excited considerable interest for image reconstruction from projection due to its… 
2006
2006
Optimizing the number of equivalent iterations of 3D OSEM in SPECT reconstruction of I-131 focal activities
2004
2004
Application of ordered-subsets expectation-maximization (OSEM) algorithm to cone-beam SPECT for accelerated 3D reconstruction
We investigated the performance of an ordered-subsets expectation-maximization (OSEM) algorithm for accelerated reconstruction in… 
1996
1996
Fast iterative image reconstruction of 3D PET data
For count-limited PET imaging protocols, two different approaches to reducing statistical noise are volume, or 3D, imaging to… 
1964
1964
Methode zur quantitativen Dünnschichtchromatographischen Bestimmung von Gallensäuren aus Menschengalle
ZusammenfassungEs wird ein Verfahren zur quantitativen Bestimmung von Gallensäuren nach Dünnschichtchromatographie beschrieben… 
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