Improving spatial resolution in SPECT with the combination of PSPMT based detector and iterative reconstruction algorithms.

  title={Improving spatial resolution in SPECT with the combination of PSPMT based detector and iterative reconstruction algorithms.},
  author={Georgios Loudos and Konstantina S. Nikita and Nikolaos K. Uzunoglu and Nikos Giokaris and Costas N. Papanicolas and Spyridon C. Archimandritis and D Varvarigou and Dimitris Maintas},
  journal={Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society},
  volume={27 4},
This paper investigates the possibility of developing a SPECT system that combines the high spatial resolution of position sensitive photomultiplier tubes (PSPMTs) with the excellent performance of iterative reconstruction algorithms. A small field of view (FOV) camera based on a PSPMT and a pixelized scintillation crystal made of CsI(Tl) have been used for the acquisition of the projections. With the use of maximum likelihood expectation maximization (ML-EM) and ordered subsets expectation… CONTINUE READING


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