Expectation maximization SPECT reconstruction with a content-adaptive, singularity-based, mesh-domain, image model

Yao Lu, Hongwei Ye, Yuesheng Xu, Xiaofei Hu, Levon Vogelsang, Lixin Shen, David Feiglin, Edward Lipson, Andrzej Krol

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

2 Citations (Scopus)

Abstract

To improve the speed and quality of ordered-subsets expectation- maximization (OSEM) SPECT reconstruction, we have implemented a content-adaptive, singularity-based, mesh-domain, image model (CASMIM) with an accurate algorithm for estimation of the mesh-domain system matrix. A preliminary image, used to initialize CASMIM reconstruction, was obtained using pixel-domain OSEM. The mesh-domain representation of the image was produced by a 2D wavelet transform followed by Delaunay triangulation to obtain joint estimation of nodal locations and their activity values. A system matrix with attenuation compensation was investigated. Digital chest phantom SPECT was simulated and reconstructed. The quality of images reconstructed with OSEM-CASMIM is comparable to that from pixel-domain OSEM, but images are obtained five times faster by the CASMIM method.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6913
DOIs
StatePublished - 2008
EventMedical Imaging 2008 - Physics of Medical Imaging - San Diego, CA, United States
Duration: Feb 18 2008Feb 21 2008

Other

OtherMedical Imaging 2008 - Physics of Medical Imaging
CountryUnited States
CitySan Diego, CA
Period2/18/082/21/08

Fingerprint

Set theory
Pixels
Triangulation
Wavelet transforms

Keywords

  • 2D wavelet transform
  • EM algorithm
  • Mesh-domain image reconstruction
  • SPECT

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Lu, Y., Ye, H., Xu, Y., Hu, X., Vogelsang, L., Shen, L., ... Krol, A. (2008). Expectation maximization SPECT reconstruction with a content-adaptive, singularity-based, mesh-domain, image model. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 6913). [69132F] https://doi.org/10.1117/12.773082

Expectation maximization SPECT reconstruction with a content-adaptive, singularity-based, mesh-domain, image model. / Lu, Yao; Ye, Hongwei; Xu, Yuesheng; Hu, Xiaofei; Vogelsang, Levon; Shen, Lixin; Feiglin, David; Lipson, Edward; Krol, Andrzej.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6913 2008. 69132F.

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

Lu, Y, Ye, H, Xu, Y, Hu, X, Vogelsang, L, Shen, L, Feiglin, D, Lipson, E & Krol, A 2008, Expectation maximization SPECT reconstruction with a content-adaptive, singularity-based, mesh-domain, image model. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 6913, 69132F, Medical Imaging 2008 - Physics of Medical Imaging, San Diego, CA, United States, 2/18/08. https://doi.org/10.1117/12.773082
Lu Y, Ye H, Xu Y, Hu X, Vogelsang L, Shen L et al. Expectation maximization SPECT reconstruction with a content-adaptive, singularity-based, mesh-domain, image model. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6913. 2008. 69132F https://doi.org/10.1117/12.773082
Lu, Yao ; Ye, Hongwei ; Xu, Yuesheng ; Hu, Xiaofei ; Vogelsang, Levon ; Shen, Lixin ; Feiglin, David ; Lipson, Edward ; Krol, Andrzej. / Expectation maximization SPECT reconstruction with a content-adaptive, singularity-based, mesh-domain, image model. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6913 2008.
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