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Proceedings Paper

Distributed source x-ray tube technology for tomosynthesis imaging
Author(s): F. Sprenger; X. Calderon-Colon; Y. Cheng; K. Englestad; J. Lu; J. Maltz; A. Paidi; X. Qian; D. Spronk; S. Sultana; G. Yang; O. Zhou
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Paper Abstract

Tomosynthesis imaging requires projection images from different viewing angles. Conventional systems use a moving xray source to acquire the individual projections. Using a stationary distributed x-ray source with a number of sources that equals the number of required projections, this can be achieved without any mechanical motion. Advantages are a potentially faster image acquisition speed, higher spatial and temporal resolution and simple system design. We present distributed x-ray sources based on carbon nanotube (CNT) field emission cathodes. The field emission cathodes deliver the electrons required for x-ray production. CNT emitters feature a stable emission at high current density, a cold emission, excellent temporal control of the emitted electrons and good configurability. We discuss the use of stationary sources for two applications: (i) a linear tube for stationary digital breast tomosynthesis (sDBT), and (ii) a square tube for on-board tomosynthesis image-guided radiation therapy (IGRT). Results from high energy distributed sources up to 160kVp are also presented.

Paper Details

Date Published: 23 March 2010
PDF: 8 pages
Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76225M (23 March 2010); doi: 10.1117/12.844586
Show Author Affiliations
F. Sprenger, XinRay Systems LLC (United States)
X. Calderon-Colon, The Univ. of North Carolina at Chapel Hill (United States)
Y. Cheng, XinRay Systems LLC (United States)
K. Englestad, XinRay Systems LLC (United States)
J. Lu, The Univ. of North Carolina at Chapel Hill (United States)
J. Maltz, Siemens Medical Solutions USA, Inc. (United States)
A. Paidi, Siemens Medical Solutions USA, Inc. (United States)
X. Qian, The Univ. of North Carolina at Chapel Hill (United States)
D. Spronk, XinRay Systems LLC (United States)
S. Sultana, The Univ. of North Carolina at Chapel Hill (United States)
G. Yang, The Univ. of North Carolina at Chapel Hill (United States)
O. Zhou, The Univ. of North Carolina at Chapel Hill (United States)


Published in SPIE Proceedings Vol. 7622:
Medical Imaging 2010: Physics of Medical Imaging
Ehsan Samei; Norbert J. Pelc, Editor(s)

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