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Proceedings Paper

Considerations for high-magnification high-cone-angle helical micro-CT
Author(s): Trond Varslot; Andrew Kingston; Glenn Myers; Adrian Sheppard
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Paper Abstract

This paper is motivated by our groups recent move from a conventional micro-CT system with a circular source-trajectory, to that with with a helical source-trajectory. By using a helix we can now image well beyond the limiting cone-angle of 10 degrees for a circle. We routinely perform micro-CT with cone-angles greater than 50° by using the Katsevich theoretically-exact reconstruction algorithm. Imaging with such large cone-angles enables high-signal-to-noise-ratio imaging but requires the specimen to be in a very close proximity to the source. This brings about its own challenges. Here we present experimental considerations and data post-processing techniques that allow us to obtain high-fidelity high-resolution micro-CT images at extreme cone-angles.

Paper Details

Date Published: 17 October 2012
PDF: 10 pages
Proc. SPIE 8506, Developments in X-Ray Tomography VIII, 850614 (17 October 2012); doi: 10.1117/12.929304
Show Author Affiliations
Trond Varslot, The Australian National Univ. (Australia)
Andrew Kingston, The Australian National Univ. (Australia)
Glenn Myers, The Australian National Univ. (Australia)
Adrian Sheppard, The Australian National Univ. (Australia)


Published in SPIE Proceedings Vol. 8506:
Developments in X-Ray Tomography VIII
Stuart R. Stock, Editor(s)

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