The virtues of positive-definite reconstruction of X-ray and gamma-ray images

Details The virtues of positive-definite reconstruction of X-ray and gamma-ray images The virtues of positive-definite reconstruction of X-ray and gamma-ray images

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nimpa.290..551m&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 290, Issue 2-3, p. 551-558.

Physics

2

Scientific paper

This paper reports laboratory tests of a Fourier-type rotational modulation collimator system for imaging hard X-rays and gamma rays. The images have been reconstructed by two methods - a conventional back-projection procedure and a positively-constrained iterative technique based on maximum likelihood. The results clearly show better spatial resolution and contrast in the maximum-likelihood images.

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