Gamma-ray imaging with stochastic apertures

Applied Optics
R S MayG F Knoll

Abstract

The spatial distribution of a radioactive fluid can be measured indirectly by observing the emerging gamma rays. A method is proposed and analyzed for gamma-ray imaging by stochastic time modulation and cross-correlation. Theoretical comparison is made to collimation and coded aperture techniques in gamma-ray image formation. Computed results are presented that illustrate the mean response and statistical error characteristics of this technique. Monte Carlo simulations are performed as a further verification. Because it relies upon a point-by-point reconstruction, rather than upon the integral properties of any particular aperture, the time modulation approach is seen to provide a theoretical basis for obtaining a smooth three-dimensional point response.

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Citations

May 1, 1976·IEEE Transactions on Bio-medical Engineering·R M SingletonR Mittra
Nov 15, 1983·Applied Optics·N OhyamaK Ishimatsu
Nov 1, 1978·Optics Letters·C Chou, H H Barrett

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