Comparisons Of Coded Aperture Imaging Using Various Apertures And Decoding Methods

Lee-Tzuu Chang; Burns Macdonald; Victor Perez-Mendez

doi:10.1117/12.955025

20 January 1977 Comparisons Of Coded Aperture Imaging Using Various Apertures And Decoding Methods

Lee-Tzuu Chang, Burns Macdonald, Victor Perez-Mendez

Proceedings Volume 0089, Applications of Optics in Medicine and Biology; (1977) https://doi.org/10.1117/12.955025
Event: 20th Annual Technical Symposium, 1976, San Diego, United States

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.

Citation Download Citation

Lee-Tzuu Chang, Burns Macdonald, and Victor Perez-Mendez "Comparisons Of Coded Aperture Imaging Using Various Apertures And Decoding Methods", Proc. SPIE 0089, Applications of Optics in Medicine and Biology, (20 January 1977); https://doi.org/10.1117/12.955025

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