- Title
- An EM algorithm for dynamic SPECT
- Creator
- Bauschke, Heinz H.; Noll, Dominikus; Celler, Anna; Borwein, Jonathan M.
- Relation
- IEEE Transactions on Medical Imaging Vol. 18, Issue 3, p. 252-261
- Publisher Link
- http://dx.doi.org/10.1109/42.764899
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 1999
- Description
- In this paper we present two variants of the EM algorithm for dynamic SPECT imaging. A version based on compartmental modeling which fits a sum of exponentials and a more general approach allowing for arbitrary decaying activities. The underlying probabilistic models are discussed and the incomplete and complete data spaces are shown to be physically meaningful. We indicate that the second method, leading to a convex program in the M step, is easier to treat numerically and we present a possible numerical approach. Some preliminary numerical tests indicating the feasibility of the method are included.
- Subject
- EM algorithm; dynamic SPECT; nuclear medicine; M step
- Identifier
- http://hdl.handle.net/1959.13/940470
- Identifier
- uon:13017
- Identifier
- ISSN:0278-0062
- Rights
- Copyright © 1999 IEEE. Reprinted from IEEE Transactions on Medical Imaging. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of University of Newcastle's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
- Language
- eng
- Full Text
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