The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
List-mode likelihood: EM algorithm and image quality estimation demonstrated on 2-D PET
Open accessAbstract
Using a theory of list-mode maximum-likelihood (ML) source reconstruction presented recently by Barrett et al., this paper formulates a corresponding expectation-maximization (EM) algorithm, as well as a method for estimating noise properties at the ML estimate. List-mode ML is of interest in cases where the dimensionality of the measurement space impedes a binning of the measurement data. It can be advantageous in cases where a better forward model can be obtained by including more measurement coordinates provided by a given detector. Different figures of merit for the detector performance can be computed from the Fisher information matrix (FIM). This paper uses the observed FIM, which requires a single data set, thus, avoiding costly ensemble statistics. The proposed techniques are demonstrated for an idealized two-dimensional (2-D) positron emission tomography (PET) [2-D PET] detector. We compute from simulation data the improved image quality obtained by including the time of flight of the coincident quanta.
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Citations
Cites
Maximum Likelihood Reconstruction for Emission Tomography
Shepp, L. A., & Vardi, Y. (1982) · IEEE Transactions on Medical Imaging · doi:10.1109/tmi.1982.4307558 · Cited by 4,429
Cited by
Benefit of Time-of-Flight in PET: Experimental and Clinical Results
Karp, J. S., Surti, S., Daube-Witherspoon, M. E., & Muehllehner, G. (2008) · Journal of Nuclear Medicine · doi:10.2967/jnumed.107.044834 · Cited by 584
STIR: software for tomographic image reconstruction release 2
Thielemans, K., Tsoumpas, C., Mustafovic, S., Beisel, T., Aguiar, P., Dikaios, N., & Jacobson, M. W. (2012) · Physics in Medicine and Biology · doi:10.1088/0031-9155/57/4/867 · Cited by 466
Update on time-of-flight PET imaging
Surti, S. (2015) · Journal of Nuclear Medicine · doi:10.2967/jnumed.114.145029 · Cited by 303
Metadata
- Authors
- Parra, L., & Barrett, H. H.
- Venue
- IEEE Transactions on Medical Imaging
- Published
- 1998-04
- Volume
- 17
- Issue
- 2
- Pages
- 228-235
- ISSN
- 0278-0062 (ISSN-L)
- OpenAlex
- W2108078594
- Cited by
- 357
- References
- 1
- FWCI
- 5.09
- Type
- journal article
- Language
- en
- Open access
- green
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- Parra, L., & Barrett, H. H. (1998). List-mode likelihood: EM algorithm and image quality estimation demonstrated on 2-D PET. IEEE Transactions on Medical Imaging. https://doi.org/10.1109/42.700734
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