ArticleProceedings of SPIE--the International Society for Optical Engineering
Joint reconstruction of activity and attenuation map using LM SPECT emission data.
Article in Proceedings of SPIE--the International Society for Optical Engineering. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Development and in silico imaging trial evaluation of a deep-learning-based transmission-less attenuation compensation method for DaT SPECT.Medical physics · 2025Article
- CTLESS: A scatter-window projection and deep learning-based transmission-less attenuation compensation method for myocardial perfusion SPECT.IEEE transactions on medical imaging · 2024Article
- A list-mode multi-energy window low-count SPECT reconstruction method for isotopes with multiple emission peaks.EJNMMI physics · 2023Article
- Feasibility analysis on simultaneous electron density and attenuation coefficient reconstruction.Medical physics · 2021Article
- Effect on null spaces of list-mode imaging systems due to increasing the size of attribute space.Journal of the Optical Society of America. A, Optics, image science, and vision · 2021Article
- Task-based assessment of binned and list-mode SPECT systems.Proceedings of SPIE--the International Society for Optical Engineering · 2021Article
- A physics and learning-based transmission-less attenuation compensation method for SPECT.Proceedings of SPIE--the International Society for Optical Engineering · 2021Article
- Fisher information analysis of list-mode SPECT emission data for joint estimation of activity and attenuation distribution.Inverse problems · 2020Article
- A LIST-MODE OSEM-BASED ATTENUATION AND SCATTER COMPENSATION METHOD FOR SPECT.Proceedings. IEEE International Symposium on Biomedical Imaging · 2020Article
- Quantifying the loss of information from binning list-mode data.Journal of the Optical Society of America. A, Optics, image science, and vision · 2020Article
- Image reconstruction in fluorescence molecular tomography with sparsity-initialized maximum-likelihood expectation maximization.Biomedical optics express · 2018Article
- Attenuation correction in emission tomography using the emission data--A review.Medical physics · 2016Article
- Estimating ROI activity concentration with photon-processing and photon-counting SPECT imaging systems.Proceedings of SPIE--the International Society for Optical Engineering · 2015Article
- Article
- Image Science with Photon-Processing Detectors.IEEE Nuclear Science Symposium conference record. Nuclear Science SymposiumArticle
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4 authors.
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Abstract
Attenuation and scatter correction in single photon emission computed tomography (SPECT) imaging often requires a computed tomography (CT) scan to compute the attenuation map of the patient. This results in increased radiation dose for the patient, and also has other disadvantages such as increased costs and hardware complexity. Attenuation in SPECT is a direct consequence of Compton scattering, and therefore, if the scattered photon data can give information about the attenuation map, then the CT scan may not be required. In this paper, we investigate the possibility of joint reconstruction of the activity and attenuation map using list-mode (LM) SPECT emission data, including the scattered-photon data. We propose a path-based formalism to process scattered-photon data. Following this, we derive analytic expressions to compute the Cramér-Rao bound (CRB) of the activity and attenuation map estimates, using which, we can explore the fundamental limit of information-retrieval capacity from LM SPECT emission data. We then suggest a maximum-likelihood (ML) scheme that uses the LM emission data to jointly reconstruct the activity and attenuation map. We also propose an expectation-maximization (EM) algorithm to compute the ML solution.
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