Computed tomography simulation with superquadrics
- 27 September 2005
- journal article
- research article
- Published by Wiley in Medical Physics
- Vol. 32 (10) , 3136-3143
- https://doi.org/10.1118/1.2040727
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.Keywords
Funding Information
- National Institutes of Health (R01 EB002667)
- National Institutes of Health (R21/R33 EB004287)
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