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7 September 2006 Practical cone-beam lambda tomography
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Abstract
As a potentially important technology for medical x-ray Computed Tomography (CT), Lambda tomography (LT) is to reconstruct a gradient-like image only from local projection data. Based on our recently derived exact fan-beam LT formula, here we propose a practical cone-beam LT algorithm for LT reconstruction from local data collected along an arbitrary smooth 3D curve. A key step in our algorithm is to determine an appropriate vector perpendicular to the line connecting the x-ray source and an image point. The algorithm is implemented assuming an equi-spatial planar detector and a nonstandard spiral trajectory. The numerical simulation results demonstrate the merits of our method.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hengyong Yu, Yangbo Ye, and Ge Wang "Practical cone-beam lambda tomography", Proc. SPIE 6318, Developments in X-Ray Tomography V, 63181S (7 September 2006); https://doi.org/10.1117/12.682202
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