Pinhole SPECT Reconstruction Using Blobs and Resolution Recovery

  title={Pinhole SPECT Reconstruction Using Blobs and Resolution Recovery},
  author={Andrey Andreyev and Michel Defrise and Christian Vanhove},
  journal={IEEE Nuclear Science Symposium Conference Record, 2005},
We study the performance of an iterative reconstruction algorithm for single pinhole SPECT, in which the correction for pinhole blurring is realized by averaging multiple projection rays by means of a Gaussian quadrature method. In addition we compare the regularizing effect obtained by using blobs basis functions and voxels with and without postsmoothing. Contrast-noise and resolution-noise studies with a mathematical phantom show that blobs improve the tradeoff between bias and variance… CONTINUE READING
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