COMPARISONS OF CODED APERTURE IMAGING USING VARIOUS APERTURES AND DECODING METHODS

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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 ... continued below

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Chang, L.-T.; Macdonald, B. & Perez-Mendez, V. July 1, 1976.

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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.

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  • 1976 SPIE Symposium -- Applications of Optics in Medicine and Biology, San Diego, CA, Aug. 23-27, 1976

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  • Report No.: LBL-5342
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 950125
  • Archival Resource Key: ark:/67531/metadc929872

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  • July 1, 1976

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 18, 2016, 3:37 p.m.

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Chang, L.-T.; Macdonald, B. & Perez-Mendez, V. COMPARISONS OF CODED APERTURE IMAGING USING VARIOUS APERTURES AND DECODING METHODS, article, July 1, 1976; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc929872/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.