Osem_(mathematics)

Ordered subset expectation maximization

Ordered subset expectation maximization

Add article description

This article is about an algorithm. For Israeli food corporation, see Osem (company).

In mathematical optimization, the ordered subset expectation maximization (OSEM) method is an iterative method that is used in computed tomography.

In applications in medical imaging, the OSEM method is used for positron emission tomography, for single photon emission computed tomography, and for X-ray computed tomography.

The OSEM method is related to the expectation maximization (EM) method of statistics. The OSEM method is also related to methods of filtered back projection.

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


Stub icon

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

Stub icon

This article related to medical imaging is a stub. You can help Wikipedia by expanding it.
Share this article:

This article uses material from the Wikipedia article Osem_(mathematics), and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.