Implementation of scatter corrected List-Mode OP-EM reconstruction algorithm and a dual (Histogram/List-Mode) reconstruction scheme for dynamic PET imaging

Ju Chieh Cheng, Arman Rahmim, Stephan Blinder, Marie Laure Camborde, Vesna Sossi

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

Abstract

We describe an implementation of Ordinary Poisson List-Mode Expectation Maximization (OP-LMEM) algorithm for the High Resolution Research Tomography (HRRT) with a scatter correction method based on the Single Scatter Simulation (SSS) technique, and a random correction method based on the variance-reduced delayed-coincidence technique. A hybrid EM algorithm has also been implemented in list-mode reconstruction (H-LMEM) using delayed-coincidence event subtraction technique with the same scatter correction as in OP-LMEM. The reconstructed images of a dynamic scanning sequence of a contrast phantom have been compared with those reconstructed using the histogram-mode reconstruction, in particular, 3D Ordinary Poisson Ordered Subset Expectation Maximization (3D-OP) with the same variance-reduced random and estimated scatter. The transaxial and axial profile analyses have shown excellent agreement between histogram and both list-mode reconstructions. Likewise the preliminary contrast and noise analyses have shown a close agreement between histogram-mode and both list-mode reconstructions. Based on these results, a dual reconstruction scheme can now be applied to dynamic imaging in Positron Emission Tomography (PET) with scatter correction; i.e. histogram-mode reconstruction (3D-OP) can be applied to frames with a large number of counts, and list-mode reconstruction (OP-LMEM) will subsequently be used for low statistics frames, as an effort to obtain efficient and quantitatively accurate reconstructions applicable to state-of-the-art dynamic PET imaging using the HRRT.

Original languageEnglish (US)
Title of host publication2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference
Pages2291-2295
Number of pages5
DOIs
StatePublished - Dec 1 2005
EventNuclear Science Symposium Conference Record, 2005 IEEE - , Puerto Rico
Duration: Oct 23 2005Oct 29 2005

Publication series

NameIEEE Nuclear Science Symposium Conference Record
Volume4
ISSN (Print)1095-7863

Other

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

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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    Cheng, J. C., Rahmim, A., Blinder, S., Camborde, M. L., & Sossi, V. (2005). Implementation of scatter corrected List-Mode OP-EM reconstruction algorithm and a dual (Histogram/List-Mode) reconstruction scheme for dynamic PET imaging. In 2005 IEEE Nuclear Science Symposium Conference Record -Nuclear Science Symposium and Medical Imaging Conference (pp. 2291-2295). [1596792] (IEEE Nuclear Science Symposium Conference Record; Vol. 4). https://doi.org/10.1109/NSSMIC.2005.1596792