Computed Tomography Simulation With Superquadrics
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.
Zhu, Jiehua, Shiying Zhao, Yangbo Ye, Ge Wang.
"Computed Tomography Simulation With Superquadrics."
Medical Physics, 32 (10): 3136-3143.
doi: 10.1118/1.2040727 source: https://aapm.onlinelibrary.wiley.com/doi/full/10.1118/1.2040727