Rectified subspace analysis of dynamic positron emission tomography

Seungjin Choi, Sangki Kim, Jae Sung Lee, Dong Soo Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Subspace analysis is a popular method for multivariate data analysis and is closely related to factor analysis and principal component analysis (PCA). In the context of image processing (especially positron emission tomography), all data points are nonnegative and it is expected that both basis images and factors are nonnegative in order to obtain reasonable results. Recently the nonnegative matrix factorization (NMF) was introduced (D.D. Lee and H.S. Seung, 1999). It was demonstrated that the NMF gave parts-based representation and was useful in dynamic PET image analysis. We present a sequential EM algorithm for rectified subspace analysis (subspace in nonnegativity constraint) and apply it to dynamic PET image analysis. Experimental results show that our proposed method is useful in dynamic PET image analysis.

Original languageEnglish
Title of host publicationICONIP 2002 - Proceedings of the 9th International Conference on Neural Information Processing
Subtitle of host publicationComputational Intelligence for the E-Age
EditorsXin Yao, Kunihiko Fukushima, Soo-Young Lee, Lipo Wang, Jagath C. Rajapakse
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2269-2273
Number of pages5
ISBN (Electronic)9810475241, 9789810475246
DOIs
StatePublished - 1 Jan 2002
Event9th International Conference on Neural Information Processing, ICONIP 2002 - Singapore, Singapore
Duration: 18 Nov 200222 Nov 2002

Publication series

NameICONIP 2002 - Proceedings of the 9th International Conference on Neural Information Processing: Computational Intelligence for the E-Age
Volume5

Other

Other9th International Conference on Neural Information Processing, ICONIP 2002
CountrySingapore
CitySingapore
Period18/11/0222/11/02

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    Choi, S., Kim, S., Lee, J. S., & Lee, D. S. (2002). Rectified subspace analysis of dynamic positron emission tomography. In X. Yao, K. Fukushima, S-Y. Lee, L. Wang, & J. C. Rajapakse (Eds.), ICONIP 2002 - Proceedings of the 9th International Conference on Neural Information Processing: Computational Intelligence for the E-Age (pp. 2269-2273). [1201897] (ICONIP 2002 - Proceedings of the 9th International Conference on Neural Information Processing: Computational Intelligence for the E-Age; Vol. 5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICONIP.2002.1201897