Distance-driven projection and backprojection in three dimensions.

Bruno De Man; Samit Basu

doi:10.1088/0031-9155/49/11/024

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Distance-driven projection and backprojection in three dimensions.

Bruno De Man·Samit Basu

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Abstract

Projection and backprojection are operations that arise frequently in tomographic imaging. Recently, we proposed a new method for projection and backprojection, which we call distance-driven, and that offers low arithmetic cost and a highly sequential memory access pattern. Furthermore, distance-driven projection and backprojection avoid several artefact-inducing approximations characteristic of some other methods. We have previously demonstrated the application of this method to parallel and fan beam geometries. In this paper, we extend the distance-driven framework to three dimensions and demonstrate its application to cone beam reconstruction. We also present experimental results to demonstrate the computational performance, the artefact characteristics and the noise-resolution characteristics of the distance-driven method in three dimensions.

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Algorithms Imaging, Three-Dimensional Information Storage and Retrieval Numerical Analysis, Computer-Assisted Phantoms, Imaging Radiographic Image Enhancement Radiographic Image Interpretation, Computer-Assisted Reproducibility of Results Scattering, Radiation Sensitivity and Specificity Signal Processing, Computer-Assisted Tomography, X-Ray Computed Comparative Study Evaluation Study Journal Article Validation Study

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Bruno De Man, Samit Basu. 2004-06-07. Distance-driven projection and backprojection in three dimensions.. https://doi.org/10.1088/0031-9155%2F49%2F11%2F024

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