Synthesizing a parallel-projection image from pinhole data

Eric Clarkson; Harrison H. Barrett; Donald W. Wilson

doi:10.1117/12.317024

24 July 1998 Synthesizing a parallel-projection image from pinhole data

Eric Clarkson, Harrison H. Barrett, Donald W. Wilson

Proceedings Volume 3336, Medical Imaging 1998: Physics of Medical Imaging; (1998) https://doi.org/10.1117/12.317024
Event: Medical Imaging '98, 1998, San Diego, CA, United States

Abstract

To produce a parallel-projection image on a planar array of gamma-ray detectors, the standard procedure is to use a parallel-hole collimator. An alternative presented here to place a pinhole array in front of the detector and to synthesize parallel projections from the pinhole data. This eliminates the physical blurring and distance-dependent resolution effects of collimators, and replaces them with the mathematical problem of estimating projection integrals. We provide conditions under which this can reasonably be done and show some examples.

Citation Download Citation

Eric Clarkson, Harrison H. Barrett, and Donald W. Wilson "Synthesizing a parallel-projection image from pinhole data", Proc. SPIE 3336, Medical Imaging 1998: Physics of Medical Imaging, (24 July 1998); https://doi.org/10.1117/12.317024

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