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Simultaneous Reconstruction of Tissue Attenuation and Radioactivity Maps in SPECT

  • Yi Tian
  • Huafeng Liu
  • Pengcheng Shi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4190)

Abstract

The importance of accurate attenuation correction in single photon emission computed tomography (SPECT) has been widely recognized. In this paper, we propose a novel scheme of simultaneous reconstruction of the tissue attenuation map and the radioactivity distribution from SPECT emission sinograms, which is obviously beneficial when the transmission data is missing for cost or efficiency reasons. Our strategy combines the SPECT image formation and data measurement models, whereas the attenuation parameters are treated as random variables with known prior statistics. After converting the models to state space representation, the extended Kalman filtering procedures are adopted to linearize the equations and to provide the joint estimates in an approximate optimal sense. Experiments have been performed on synthetic data and real scanning data to illustrate abilities and benefits of the method.

Keywords

Single Photon Emission Compute Tomography Single Photon Emission Compute Tomography Image Attenuation Parameter State Space Representation Tissue Attenuation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Yi Tian
    • 1
  • Huafeng Liu
    • 1
  • Pengcheng Shi
    • 2
    • 3
  1. 1.State Key Laboratory of Modern Optical InstrumentationZhejiang UniversityHangzhouChina
  2. 2.School of Biomedical EngineeringSouthern Medical UniversityGuangzhouChina
  3. 3.Department of Electrical and Electronic EngineeringHong Kong University of Science and TechnologyHong Kong

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