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Poster communications

Determination of the analytical point spread function of a pinhole aperture SPECT system

Abstract : Pinhole aperture in single photon emission computed tomography (SPECT) imaging system provides high spatial resolution for quantitative measurement. In this paper, we propose a new analytical method to calculate the PSF of a pinhole SPECT system where the response of the crystal is taken into account. The PSF is calculated as the convolution of the pinhole and the crystal responses. A general method to calculate the pinhole response is introduced using a decomposition of the pinhole geometry in single mathematical elements. The crystal response is derived analytically using the distribution of the optical photons on the photodetector surface. As a conclusion, both the pinhole response and the optical distribution give similar results compared to the one obtained with Monte Carlo simulation for a reduced computing time
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Poster communications
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http://hal.in2p3.fr/in2p3-00369489
Contributor : Yvette Heyd <>
Submitted on : Friday, March 20, 2009 - 9:39:38 AM
Last modification on : Friday, May 8, 2020 - 1:10:20 AM

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V. Bekaert, D. Brasse, B. Gizard, J.L. Guyonnet. Determination of the analytical point spread function of a pinhole aperture SPECT system. IEEE Nuclear Science Symposium and Medical Imaging Conference, Oct 2004, Rome, Italy. 4, pp.2565-2569, 2004, ⟨10.1109/NSSMIC.2004.1462777⟩. ⟨in2p3-00369489⟩

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