Alternating minimization algorithms for transmission tomography using energy detectors
Expectation-minimization algorithms for transmission tomography are extended to account for detectors that are modeled as integrating the energy of the incident X-ray photons. The resulting algorithm is guaranteed to monotonically increase the log likelihood functional. Both the expectation step and...
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| Vydáno v: | Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002 Ročník 1; s. 144 - 147 vol.1 |
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| Hlavní autoři: | , , |
| Médium: | Konferenční příspěvek |
| Jazyk: | angličtina |
| Vydáno: |
IEEE
2002
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| ISBN: | 0780375769, 9780780375765 |
| ISSN: | 1058-6393 |
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| Abstract | Expectation-minimization algorithms for transmission tomography are extended to account for detectors that are modeled as integrating the energy of the incident X-ray photons. The resulting algorithm is guaranteed to monotonically increase the log likelihood functional. Both the expectation step and the maximization step are given in closed form. The formulation is general enough that it can be extended to other energy-dependent models for the detectors. |
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| AbstractList | Expectation-minimization algorithms for transmission tomography are extended to account for detectors that are modeled as integrating the energy of the incident X-ray photons. The resulting algorithm is guaranteed to monotonically increase the log likelihood functional. Both the expectation step and the maximization step are given in closed form. The formulation is general enough that it can be extended to other energy-dependent models for the detectors. |
| Author | Whiting, B.R. O'Sullivan, J.A. Snyder, D.L. |
| Author_xml | – sequence: 1 givenname: J.A. surname: O'Sullivan fullname: O'Sullivan, J.A. organization: Dept. of Electr. Eng., Washington Univ., St. Louis, MO, USA – sequence: 2 givenname: D.L. surname: Snyder fullname: Snyder, D.L. organization: Dept. of Electr. Eng., Washington Univ., St. Louis, MO, USA – sequence: 3 givenname: B.R. surname: Whiting fullname: Whiting, B.R. |
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| Snippet | Expectation-minimization algorithms for transmission tomography are extended to account for detectors that are modeled as integrating the energy of the... |
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| SubjectTerms | Data models Extraterrestrial measurements Image reconstruction Minimization methods Physics Radiology Single photon emission computed tomography X-ray detection X-ray detectors X-ray imaging |
| Title | Alternating minimization algorithms for transmission tomography using energy detectors |
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