Attenuation map estimation without transmission scanning using measured scatter data

Sarah C. Cade*, Simon Arridge, Martyn J. Evans, Brian F. Hutton

*Corresponding author for this work

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

    5 Citations (Scopus)

    Abstract

    Attenuation correction is essential for reliable interpretation of SPECT images, however the use of transmission measurements to generate attenuation maps is limited by availability of equipment and potential mismatches between the transmission and emission measurements. A method has been developed to use scatter data measured at the same time as the emission measurements to estimate an attenuation map. The algorithm iterates through a dual estimation process, fixing estimated activity and attenuation respectively. The work presented here improves the accuracy of the previously described scatter model. The possibility of using an ordered subsets technique to accelerate the reconstruction algorithm is considered and the robustness of the reconstruction algorithm to errors in the estimation of higher order scatter is investigated.

    Original languageEnglish
    Title of host publication2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
    Pages2657-2663
    Number of pages7
    DOIs
    Publication statusPublished - 2012
    Event2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 - Valencia, Spain
    Duration: 23 Oct 201129 Oct 2011

    Other

    Other2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
    CountrySpain
    CityValencia
    Period23/10/1129/10/11

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  • Cite this

    Cade, S. C., Arridge, S., Evans, M. J., & Hutton, B. F. (2012). Attenuation map estimation without transmission scanning using measured scatter data. In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 (pp. 2657-2663). [6155246] https://doi.org/10.1109/NSSMIC.2011.6155246