Research Article Open Access

Contribution of the Entropy Function to the Study of Collimator for Nuclear Medicine Imaging

M.S. Bouhdima, I. Elloumi and M.H.B. Ghozlen

Abstract

Scintigraphic image currently used in the diagnosis or the evaluation process of tissues, is strongly dependant on several technical parameters specially collimator characteristics. The present work describes a numerical method, based on entropy function, able to specify depth and hole diameter of collimator as well as other geometrical parameters to get a better accuracy in scintigraphy evaluation. From the classical form of the entropy function, the entropy associated with a scintigraphic acquisition has been established. Its explicit expression includes collimator characteristics and source-collimator distance. The obtained numerical results and the performed illustrations explain the interest of the entropic approach, which takes into account both multiplex effect, counting process and spatial uncertainty. Acquisitions obtained on two kinds of collimator (general use and high resolution) by use of an uniform radioactive source, confirm the efficiency of such method in the choice of appropriate collimator.

American Journal of Applied Sciences
Volume 4 No. 10, 2007, 807-814

DOI: https://doi.org/10.3844/ajassp.2007.807.814

Submitted On: 13 April 2007 Published On: 31 October 2007

How to Cite: Bouhdima, M., Elloumi, I. & Ghozlen, M. (2007). Contribution of the Entropy Function to the Study of Collimator for Nuclear Medicine Imaging . American Journal of Applied Sciences, 4(10), 807-814. https://doi.org/10.3844/ajassp.2007.807.814

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Keywords

  • collimator
  • γ - camera
  • entropy
  • noise