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A general exact reconstruction for cone-beam CT via backprojection-filtration
Journal article   Peer reviewed

A general exact reconstruction for cone-beam CT via backprojection-filtration

Yangbo Ye, Shiying Zhao, Hengyong Yu and Ge Wang
IEEE transactions on medical imaging, Vol.24(9), pp.1190-1198
09/2005
DOI: 10.1109/TMI.2005.853626
PMID: 16156356

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Abstract

In this paper, we prove a generalized backprojection-filtration formula for exact cone-beam image reconstruction with an arbitrary scanning locus. Our proof is independent of the shape of the scanning locus, as long as the object is contained in a region where there is a chord through any interior point. As special cases, this generalized formula can be applied with cone-beam scanning along nonstandard spiral and saddle curves, as well as in an n-PI window setting. The algorithmic implementation and numerical results are described to support the correctness of our general claim.
Algorithms Artificial Intelligence Brain - diagnostic imaging Humans Imaging, Three-Dimensional - methods Phantoms, Imaging Radiographic Image Enhancement - methods Radiographic Image Interpretation, Computer-Assisted - methods Reproducibility of Results Sensitivity and Specificity Tomography, Spiral Computed - instrumentation Tomography, Spiral Computed - methods

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