Practical cone-beam lambda tomography

Hengyong Yu; Yangbo Ye; Ge Wang

doi:10.1117/12.682202

7 September 2006 Practical cone-beam lambda tomography

Hengyong Yu, Yangbo Ye, Ge Wang

Proceedings Volume 6318, Developments in X-Ray Tomography V; 63181S (2006) https://doi.org/10.1117/12.682202
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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.

Citation Download Citation

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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