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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.
2017
2017
Evaluation of SRW-OSEM Using Clinical Data
We describe evaluations of the SRW-OSEM algorithm using clinical patient data. SRW-OSEM is an iterative reconstruction method… 
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… 
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… 
1998
1998
Introduction of ordered subsets algorithm to maximum a posteriori expectation maximization method
  • H. UrabeK. Ogawa
  • Proceedings International Conference on Image…
  • 1998
  • Corpus ID: 27047723
Iterative reconstruction methods such as the maximum likelihood (ML)-expectation maximization (EM) method can be accelerated by… 
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… 
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