Quantum noise analysis of the single grating aperture gamma ray imaging

C. Chou; S. P. Chang; L. S. Chen

doi:10.1117/12.939369

Quantum noise analysis of the single grating aperture gamma ray imaging

C. Chou, S. P. Chang, L. S. Chen

National Defense University Taiwan

Research output: Contribution to journal › Journal Article › peer-review

Abstract

Single Grating Aperture (SAG), behaves as a variable frequency grating, records the object spectrum directly in Fourier domain where the quantum noise is introduced in this region originally. This is in contrast to a stationary coded aperture in which the noise appears in space domain in the shadow casting images. The noise properties of SGA imaging system with summation filtered back projection reconstruction algorithm has been derived. The calculation on SNR shows that this imaging system gives the image performance directly proportional to the intensity distribution of the object. The computer simulations of point and uniform disc object show this conclusion correct.

Original language	English
Pages (from-to)	471-477
Number of pages	7
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	454
DOIs	https://doi.org/10.1117/12.939369
State	Published - 15 06 1984
Externally published	Yes

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Quantum noise analysis of the single grating aperture gamma ray imaging

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