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A new simple iterative reconstruction algorithm for SPECT transmission measurement
Author(s) -
Hwang DoSik,
Zeng Gengsheng L.
Publication year - 2005
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1944288
Subject(s) - algorithm , imaging phantom , iterative method , computer science , iterative reconstruction , simple (philosophy) , simplicity , transmission (telecommunications) , difference map algorithm , reconstruction algorithm , simple algorithm , single photon emission computed tomography , mathematical optimization , mathematics , artificial intelligence , optics , physics , nuclear medicine , telecommunications , philosophy , epistemology , thermodynamics , medicine , quantum mechanics
This paper proposes a new iterative reconstruction algorithm for transmission tomography and compares this algorithm with several other methods. The new algorithm is simple and resembles the emission ML‐EM algorithm in form. Due to its simplicity, it is easy to implement and fast to compute a new update at each iteration. The algorithm also always guarantees non‐negative solutions. Evaluations are performed using simulation studies and real phantom data. Comparisons with other algorithms such as convex, gradient, and logMLEM show that the proposed algorithm is as good as others and performs better in some cases.