Computed tomography simulation with superquadrics.

Jiehua Zhu; Shiying Zhao; Yangbo Ye; Ge Wang

doi:10.1118/1.2040727

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PubMed · 16279067

Computed tomography simulation with superquadrics.

Jiehua Zhu·Shiying Zhao·Yangbo Ye·Ge Wang

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Abstract

Accurate and efficient simulation of an x-ray transform for representative structures plays an important role in research and development of x-ray CT, for the evaluation and improvement of CT image reconstruction algorithms, in particular. Superquadrics are a family of three-dimensional objects, which can be used to model a variety of anatomical structures. In this paper, we propose an algorithm for the computation of x-ray transforms for superellipsoids and tori with a monochromatic x-ray. Their usefulness is demonstrated by projection and reconstruction of a superquadric-based thorax phantom. Our work indicates that superquadric modeling provides a more realistic visualization than quadratic modeling, and a faster computation than spline methods.

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Algorithms Computer Simulation Imaging, Three-Dimensional Models, Biological Radiographic Image Enhancement Radiographic Image Interpretation, Computer-Assisted Reproducibility of Results Sensitivity and Specificity Tomography, X-Ray Computed Evaluation Study Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

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Jiehua Zhu, Shiying Zhao, Yangbo Ye, Ge Wang. 2005. Computed tomography simulation with superquadrics.. https://doi.org/10.1118/1.2040727

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