Performance evaluation of block-iterative algorithms for SPECT reconstruction

Chi Liu, Lana Volokh, Xide Zhao, Jingyan Xu, Taek-Soo Lee, Benjamin Tsui

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The purpose of this study is to evaluate the performance of four block-iterative algorithms, ordered-subsets expectation-maximization (OS-EM), reseated block-iterative EM (RBI-EM), modified row-action maximum likelihood algorithm (RAMLA) and reseated block-iterative maximum a posteriori EM (RBI-MAP-EM), for In-111 ProstaScint® SPECT image reconstruction. The 3D NCAT phantom with realistic In-111 ProstaScint® activity distribution was used in the study. Noise-free and noisy projections of the phantom obtained using a medium-energy general-purpose (MEGP) collimator were generated using Monte Carlo simulation methods. For each algorithm, the projection data were reconstructed with the compensations for attenuation, collimator-detector response and scatter. Image quality was evaluated in terms of FWHM of a profile through a small blood vessel, normalized mean square error (NMSE), ensemble normalized standard deviation (NSDE) of a uniform region of interest (ROI) in the reconstructed image measured from 30 noise realizations, and regional NSD (NSDR) of an ROI measure from 1 noise realization. The results indicated that, RBI-EM has superior performance than that of OS-EM when less than 4 views per subset were used and similar performance when 4 or more views per subset were used. Modified RAMLA provides similar image quality with a slower convergence rate than that of OS-EM. Using well-chosen parameters, RBI-MAP-EM provides increased noise smoothing with less loss in resolution and error. We conclude that when compared with OS-EM, the RBI-EM and modified RAMLA have the same performance at a slower convergence rate, while the RBI-MAP-EM has superior performance and can potentially improve image quality.

Original languageEnglish (US)
Title of host publicationIEEE Nuclear Science Symposium Conference Record
Pages1827-1831
Number of pages5
Volume3
DOIs
StatePublished - 2005
EventNuclear Science Symposium Conference Record, 2005 IEEE - , Puerto Rico
Duration: Oct 23 2005Oct 29 2005

Other

OtherNuclear Science Symposium Conference Record, 2005 IEEE
CountryPuerto Rico
Period10/23/0510/29/05

Fingerprint

Set theory
Image quality
Maximum likelihood
Blood vessels
Full width at half maximum
Image reconstruction
Mean square error
Detectors

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

Cite this

Liu, C., Volokh, L., Zhao, X., Xu, J., Lee, T-S., & Tsui, B. (2005). Performance evaluation of block-iterative algorithms for SPECT reconstruction. In IEEE Nuclear Science Symposium Conference Record (Vol. 3, pp. 1827-1831). [1596676] https://doi.org/10.1109/NSSMIC.2005.1596676

Performance evaluation of block-iterative algorithms for SPECT reconstruction. / Liu, Chi; Volokh, Lana; Zhao, Xide; Xu, Jingyan; Lee, Taek-Soo; Tsui, Benjamin.

IEEE Nuclear Science Symposium Conference Record. Vol. 3 2005. p. 1827-1831 1596676.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, C, Volokh, L, Zhao, X, Xu, J, Lee, T-S & Tsui, B 2005, Performance evaluation of block-iterative algorithms for SPECT reconstruction. in IEEE Nuclear Science Symposium Conference Record. vol. 3, 1596676, pp. 1827-1831, Nuclear Science Symposium Conference Record, 2005 IEEE, Puerto Rico, 10/23/05. https://doi.org/10.1109/NSSMIC.2005.1596676
Liu C, Volokh L, Zhao X, Xu J, Lee T-S, Tsui B. Performance evaluation of block-iterative algorithms for SPECT reconstruction. In IEEE Nuclear Science Symposium Conference Record. Vol. 3. 2005. p. 1827-1831. 1596676 https://doi.org/10.1109/NSSMIC.2005.1596676
Liu, Chi ; Volokh, Lana ; Zhao, Xide ; Xu, Jingyan ; Lee, Taek-Soo ; Tsui, Benjamin. / Performance evaluation of block-iterative algorithms for SPECT reconstruction. IEEE Nuclear Science Symposium Conference Record. Vol. 3 2005. pp. 1827-1831
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