Preliminary performance measurements from a second generation diffraction enhanced imaging system

Dean M. Connor; Elodia B. Cole; Zhong Zhong; Christopher A. Parham; Etta D. Pisano

doi:10.1117/12.913280

3 March 2012 Preliminary performance measurements from a second generation diffraction enhanced imaging system

Dean M. Connor, Elodia B. Cole, Zhong Zhong, Christopher A. Parham, Etta D. Pisano

Proceedings Volume 8313, Medical Imaging 2012: Physics of Medical Imaging; 83134G (2012) https://doi.org/10.1117/12.913280
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

Abstract

Purpose: The goal of this study was to begin quantifying the performance of a second generation diffraction enhanced imaging (DEI) system designed to reduce imaging time from our first generation system. Background: DEI, a phase contrast x-ray imaging modality, generates images with enhanced soft tissue contrast at a lower dose than conventional radiography. Our group has previously reported on an x-ray tube-based DEI system, but a substantial gap remained between the imaging time of that system and that of a clinical DEI system. Method: A high power, rotating anode x-ray tube was integrated into this second generation DEI system along with an image intensifier to improve photon counting efficiency. Images of phantoms were acquired using a tube power of 10 kW (125 kVp, 80 mA) at the silicon [333] reflection with the analyzer crystal at its half-reflectivity point. Results: Our preliminary results show comparable image contrast to the first generation DEI system. Imaging time was reduced by a factor four and x-ray-on time was reduced by a factor of sixty from the initial prototype system. Conclusions: These early results from our second generation diffraction enhanced imaging system show significant reduction in imaging time with preservation of DEI contrast.

Citation Download Citation

Dean M. Connor, Elodia B. Cole, Zhong Zhong, Christopher A. Parham, and Etta D. Pisano "Preliminary performance measurements from a second generation diffraction enhanced imaging system", Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83134G (3 March 2012); https://doi.org/10.1117/12.913280

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