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 David Lipson; Andrzej Krol

doi:10.1117/12.773082

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 David Lipson, Andrzej Krol

Research output: Chapter in Book/Entry/Poem › Conference contribution

3 Scopus citations

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 language	English (US)
Title of host publication	Medical Imaging 2008 - Physics of Medical Imaging
DOIs	https://doi.org/10.1117/12.773082
State	Published - 2008
Event	Medical Imaging 2008 - Physics of Medical Imaging - San Diego, CA, United States Duration: Feb 18 2008 → Feb 21 2008

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	6913
ISSN (Print)	1605-7422

Other

Other	Medical Imaging 2008 - Physics of Medical Imaging
Country/Territory	United States
City	San Diego, CA
Period	2/18/08 → 2/21/08

Keywords

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

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Biomaterials
Radiology Nuclear Medicine and imaging

Access to Document

10.1117/12.773082

Cite this

Lu, Y., Ye, H., Xu, Y., Hu, X., Vogelsang, L., Shen, L., Feiglin, D., Lipson, E. D., & Krol, A. (2008). Expectation maximization SPECT reconstruction with a content-adaptive, singularity-based, mesh-domain, image model. In Medical Imaging 2008 - Physics of Medical Imaging [69132F] (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 6913). 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 et al.
Medical Imaging 2008 - Physics of Medical Imaging. 2008. 69132F (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 6913).

Research output: Chapter in Book/Entry/Poem › Conference contribution

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

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

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.",

keywords = "2D wavelet transform, EM algorithm, Mesh-domain image reconstruction, SPECT",

author = "Yao Lu and Hongwei Ye and Yuesheng Xu and Xiaofei Hu and Levon Vogelsang and Lixin Shen and David Feiglin and Lipson, {Edward David} and Andrzej Krol",

year = "2008",

doi = "10.1117/12.773082",

language = "English (US)",

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AU - Lu, Yao

AU - Ye, Hongwei

AU - Xu, Yuesheng

AU - Hu, Xiaofei

AU - Vogelsang, Levon

AU - Shen, Lixin

AU - Feiglin, David

AU - Lipson, Edward David

AU - Krol, Andrzej

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

KW - 2D wavelet transform

KW - EM algorithm

KW - Mesh-domain image reconstruction

KW - SPECT

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U2 - 10.1117/12.773082

DO - 10.1117/12.773082

M3 - Conference contribution

AN - SCOPUS:43149120915

SN - 9780819470973

T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE

BT - Medical Imaging 2008 - Physics of Medical Imaging

T2 - Medical Imaging 2008 - Physics of Medical Imaging

Y2 - 18 February 2008 through 21 February 2008

ER -

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

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Keywords

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