PORTABLE X–RAY CT MINI SYSTEM BASED ON MONOLITHITIC SEMI-INSULATING GAAS DETECTORS USING PERSPECTIVE IMAGING RECONSTRUCTION TECHNIQUES

Jiri Pribil, B. Zatko, Ivan Frollo, F. Dubecký, Pawel Grybos

Abstract

The work describes the present status of development of the portable X–ray CT mini system. The system is capable to operate also as a quantum digital X–ray scanner. Detection unit is constructed from double line of 2 × 1024 SI GaAs pixel detectors with pitch of 250 µm. The system allows operation in the single photon counting regime and the energy separation (one energy window) with estimated spatial resolution higher than 125 µm. Developed modification of the X–ray image reconstruction based on perspective imaging techniques has been experimentally verified on testing phantoms and practically implemented for processing images of real test objects.

Keywords

X–ray imaging, single photon counting detector, image reconstruction

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IMEKO-WC-2009-TC13-067.pdf

DOI

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IMEKO TC

TC13 - Measurements in Biology and Medicine

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