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Proceedings Paper

Fast high-resolution micro-CT with exact reconstruction methods
Author(s): T. Varslot; A. Kingston; A. Sheppard; A. Sakellariou
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Paper Abstract

We have constructed a helical trajectory X-ray micro-CT system which enables high-resolution tomography within practical acquisition times. In the quest for ever-increasing resolution, lab-based X-ray micro-CT systems are limited by the spot size of the X-ray source. Unfortunately, decreasing the spot size reduces the X-ray flux, and therefore the signal-to-noise ratio (SNR). The reduced source flux can be offset by moving the detector closer to the source, thereby capturing a larger solid angle of the X-ray beam. We employ a helical scanning trajectory, accompanied by an exact reconstruction method to avoid the artifacts resulting from the use of large cone-angles with circular trajectories. In this paper, we present some challenges which arise when adopting this approach in a high-resolution cone-beam micro-CT system.

Paper Details

Date Published: 20 September 2010
PDF: 10 pages
Proc. SPIE 7804, Developments in X-Ray Tomography VII, 780413 (20 September 2010); doi: 10.1117/12.860298
Show Author Affiliations
T. Varslot, The Australian National Univ. (Australia)
A. Kingston, The Australian National Univ. (Australia)
A. Sheppard, The Australian National Univ. (Australia)
A. Sakellariou, The Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 7804:
Developments in X-Ray Tomography VII
Stuart R. Stock, Editor(s)

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