منابع مشابه
IEEE Transactions on Network Science and Engineering
of peer-reviewed technical articles that deal with the theory and applications of network science and the interconnections among the elements in a system that form a network. In particular, the IEEE Transactions on Network Science and Engineering publishes articles on understanding, prediction, and control of structures and behaviors of networks at the fundamental level. The types of networks c...
متن کاملOn complete-data spaces for PET reconstruction algorithms - Nuclear Science, IEEE Transactions on
As investigators consider more comprehensive measurement models for emission tomography, there will be more choices for the complete-data spaces of the associated expectation-maximization (EM) algorithms for maximumlikelihood (ML) estimation. In this paper, we show that EM algorithms based on smaller complete-data spaces will typically converge faster. We discuss two practical applications of t...
متن کاملNmis - 07 Submitted to Ieee Transactions on Nuclear Science , March 2002 Second
We consider detection of high-energy photons in PET using thick scintillation crystals. Parallax effect and multiple Compton interactions such crystals significantly reduce the accuracy of conventional detection methods. In order to estimate the photon line of flight based on photomultiplier responses, we use asymptotically optimal nonlinear techniques, implemented by feed-forward and radial ba...
متن کاملThe Role of Cerium Sites in the Scintillation Mechanism of LSO - Nuclear Science, IEEE Transactions on
The crystal structure of Luz(Si04)0:Ce ("LSO") has two trivalent cation sites which may be occupied by Ce3* to form luminescence centers. Previous investigations revealed the existence of two distinct sets of Ce3' excitation and emission spectra and suggested that the differences in the spectra are due to differences in the crystal fields at the two lattice sites that shift the 5d levels of Ce"...
متن کاملMAP Reconstruction From Spatially Correlated PET Data - Nuclear Science, IEEE Transactions on
High sensitivity 3-D PET data is often rebinned into 2-D data sets in order to reduce the computation time of reconstructions. The need to precorrect the 3-D data for attenuation, accidentals, scatter, and deadtime effects before rebinning along with the rebinning process itself changes the statistics of the data. This paper presents an approach for finding and using the statistics of Fourier r...
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ژورنال
عنوان ژورنال: IEEE Transactions on Nuclear Science
سال: 2023
ISSN: ['0018-9499', '1558-1578']
DOI: https://doi.org/10.1109/tns.2023.3293626