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Proceedings Paper

Addressable flat-panel x-ray sources for medical, security, and industrial applications
Author(s): Gil Travish; Felix J. Rangel; Mark Andrew Evans; Ben Hollister; Kristin Schmiedehausen
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Paper Abstract

Traditional tube-based x-ray sources are widely employed in medical imaging, security screening, and industrial inspection. The cone-beam produced by these tubes is simple to apply, but often demands a long stand-off distance to the object of interest. When combined with the bulk of tubes and their attendant power supplies and cooling systems, the footprint requirement of traditional sources often impedes their use, especially in mobile situations. Here we present an approach to a distributed, flat-panel x-ray source, which eliminates the aforementioned bulk, weight and need for standoff. This source uses spontaneous polarization in pyroelectric crystals to generate high fields and field enhanced emission from micropatterned tips to create a large array of electron beamlets. When combined with a transmission Bremsstrahlung target, a mechanism for raster control of the emitters, and a collimator, this source offers a new and cost effective way to perform stationary and portable imaging. The working principles and performance characteristics of this source are presented. The demands placed on the imaging detector and image processing are also described. Finally, prospects for new promising applications (such as mammography) are mentioned.

Paper Details

Date Published: 15 October 2012
PDF: 13 pages
Proc. SPIE 8502, Advances in X-Ray/EUV Optics and Components VII, 85020L (15 October 2012); doi: 10.1117/12.929354
Show Author Affiliations
Gil Travish, Univ. of California, Los Angeles (United States)
Radius Diagnostics Research, Inc. (United States)
Felix J. Rangel, Radius Diagnostics Research, Inc. (United States)
Mark Andrew Evans, Radius Diagnostics Research, Inc. (United States)
Ben Hollister, Radius Diagnostics Research, Inc. (United States)
Kristin Schmiedehausen, Radius Diagnostics Research, Inc. (United States)

Published in SPIE Proceedings Vol. 8502:
Advances in X-Ray/EUV Optics and Components VII
Shunji Goto; Christian Morawe; Ali M. Khounsary, Editor(s)

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