DocumentCode
1707396
Title
ITEM-QM solutions for EM problems in image reconstruction
Author
Pauli, Johannes ; Anton, Gisela ; Uhlmann, Norman ; Karg, Timo ; Pauli, Eva-Maria ; Weidemann, Andreas ; Beulertz, Werner
Author_Institution
Phys. Inst. Abt. IV, Friedrich Alexander Univ. Erlangen-Nurnberg, Erlangen, Germany
Volume
3
fYear
2001
Firstpage
1756
Abstract
ITEM (imaginary time expectation maximization), a new algorithm for the solution of expectation maximization (EM) problems based on the QM (quantum mechanical) energy minimization via imaginary time (IT) evolution is presented. Due to its generality, ITEM is applicable to various image reconstruction problems like CT, PET, SPECT and Compton cameras. The choice of the optimal ITEM hamiltonian is discussed and numerical results are presented for the Compton camera.
Keywords
image reconstruction; optimisation; Compton camera; ITEM; expectation maximization; hamiltonian; image reconstruction; imaginary time; imaginary time expectation maximization; quantum mechanics; Cameras; Computed tomography; Image reconstruction; Licenses; Minimization methods; Positron emission tomography; Quantum mechanics; Reconstruction algorithms; Regulators; Stationary state;
fLanguage
English
Publisher
ieee
Conference_Titel
Nuclear Science Symposium Conference Record, 2001 IEEE
ISSN
1082-3654
Print_ISBN
0-7803-7324-3
Type
conf
DOI
10.1109/NSSMIC.2001.1008682
Filename
1008682
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