Jump to content

Ordered subset expectation maximization

Add links
From Wikipedia, the free encyclopedia
This is an old revision of this page, as edited by Melcombe (talk | contribs) at 14:27, 20 July 2010 (fix). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
This article is about an algorithm. For Israeli food corporation, see Osem (company).

Ordered subset expectation maximization (OSEM) is an expectation maximization (EM) algorithm widely used in medical imaging for positron emission tomography, single photon emission computed tomography and less frequently for X-ray computed tomography.

It improves upon the speed of previous EM techniques and improves upon the quality of previous FBP (filtered back projection) techniques.

References

  • Hudson, H.M., Larkin, R.S. (1994) "Accelerated image reconstruction using ordered subsets of projection data", IEEE Trans. Medical Imaging, 13 (4), 601–609 doi:10.1109/42.363108
  • Ing-Tsung Hsiao and Hsuan-Ming Huang (2010) "An accelerated ordered subsets reconstruction algorithm using an accelerating power factor for emission tomography", Physics in Medicine and Biology 55 599. doi:10.1088/0031-9155/55/3/003
Stub icon

This statistics-related article is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Ordered_subset_expectation_maximization&oldid=374499301"