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Proceedings Paper

Comparisons Of Coded Aperture Imaging Using Various Apertures And Decoding Methods
Author(s): Lee-Tzuu Chang; Burns Macdonald; Victor Perez-Mendez
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Paper Abstract

The utility of coded aperture imaging of radioisotope distributions in Nuclear Medicine is in its ability to give depth information about a three dimensional source. We have calculated imaging with Fresnel zone plate and multiple pinhole apertures to produce coded shadows and reconstruction of these shadows using correlation, Fresnel diffraction, and Fourier transform deconvolution. Comparisons of the coded apertures and decoding methods are made by evaluating their point response functions both for in-focus and out-of-focus image planes. Background averages and standard deviations were calculated. In some cases, background subtraction was made using combinations of two complementary apertures. Results using deconvolution reconstruction for finite numbers of events are also given.

Paper Details

Date Published: 20 January 1977
PDF: 8 pages
Proc. SPIE 0089, Applications of Optics in Medicine and Biology, (20 January 1977); doi: 10.1117/12.955025
Show Author Affiliations
Lee-Tzuu Chang, University of California (United States)
Burns Macdonald, University of California (United States)
Victor Perez-Mendez, University of California (United States)


Published in SPIE Proceedings Vol. 0089:
Applications of Optics in Medicine and Biology
Robin E. Herron, Editor(s)

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