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Proceedings Paper

Stationary micro-CT scanner using a distributed multi-beam field emission x-ray source: a feasibility study
Author(s): R. Peng; J. Zhang; X. Calderon-Colon; S. Wang; S. Sultana; S. Chang; J. P. Lu; O. Zhou
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Paper Abstract

Current micro-CT scanners use either one or two x-ray tubes that are mechanically rotated around an object to collect the projection images for CT reconstruction. The rotating gantry design hinders the performance of the micro-CT scanner including the scanning speed. Based on the newly emerged carbon nanotube based distributed multi-beam x-ray array technology, we have proposed to build a stationary gantry-free multi-beam micro-CT (MBμCT) scanner. To investigate the feasibility of this concept, a prototype system using a source array with 20 individually controlled x-ray beams has been designed and tested. The prototype CT scanner can generate a scanning x-ray beam to image an object from different viewing angles (coverage of 36°) without any rotation. The electronics and software for system control and data have been implemented. The projected performance of the prototype MBμCT imaging system was discussed and some preliminary imaging results were presented.

Paper Details

Date Published: 13 March 2009
PDF: 9 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 725847 (13 March 2009); doi: 10.1117/12.811467
Show Author Affiliations
R. Peng, The Univ. of North Carolina at Chapel Hill (United States)
J. Zhang, The Univ. of North Carolina at Chapel Hill (United States)
X. Calderon-Colon, The Univ. of North Carolina at Chapel Hill (United States)
S. Wang, The Univ. of North Carolina at Chapel Hill (United States)
S. Sultana, The Univ. of North Carolina at Chapel Hill (United States)
S. Chang, The Univ. of North Carolina at Chapel Hill (United States)
J. P. Lu, The Univ. of North Carolina at Chapel Hill (United States)
O. Zhou, The Univ. of North Carolina at Chapel Hill (United States)
Lineberger Comprehensive Cancer Ctr. (United States)


Published in SPIE Proceedings Vol. 7258:
Medical Imaging 2009: Physics of Medical Imaging
Ehsan Samei; Jiang Hsieh, Editor(s)

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