A consistency condition for cone-beam CT with general source trajectories

Emil Y. Sidky; Yu Zou; Dan Xia; Xiaochuan Pan

doi:10.1117/12.596123

29 April 2005 A consistency condition for cone-beam CT with general source trajectories

Emil Y. Sidky, Yu Zou, Dan Xia, Xiaochuan Pan

Author Affiliations +

Proceedings Volume 5747, Medical Imaging 2005: Image Processing; (2005) https://doi.org/10.1117/12.596123
Event: Medical Imaging, 2005, San Diego, California, United States

Abstract

Recent algorithm development for image reconstruction for cone-beam CT has tackled exact image reconstruction for very general scanning configurations. The heart of the new algorithms is the concept of reconstruction on the chordn of a general source trajectory. Volume ROI reconstruction becomes possible by concatenating the chords on which the image has been obtained. For some scanning trajectories there maybe points in the image space where the image can theoretically be obtained exactly, yet no chord intersects these points. This article provides a consistency condition, based on the ideas of John's equation, that may be used to rebin cone-beam data so that all points satisfying Tuy's condition are reconstructible by a chord algorithm.

Citation Download Citation

Emil Y. Sidky, Yu Zou, Dan Xia, and Xiaochuan Pan "A consistency condition for cone-beam CT with general source trajectories", Proc. SPIE 5747, Medical Imaging 2005: Image Processing, (29 April 2005); https://doi.org/10.1117/12.596123

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