title: On the bias of finite-view interior tomography using piecewise-constant and non-negativity constraints.
abstract: It has been widely believed that the non-negativity and the piecewise-constant constraints guarantee a unique solution to an interior tomographic problem. This letter points out that if the number of views is finite, the non-negativity and the piecewise-constant constraints do not guarantee a unique solution to an interior tomographic problem and the reconstruction could be biased by a constant polygon.
authors: Utah Center for Advanced Imaging Research (UCAIR), Department of Radiology, University of Utah, Salt Lake City, UT 84108, USA. larry@ucair.med.utah.edu
authors: Gengsheng L
authors: GL
authors: Zeng
authors: Grant T
authors: GT
authors: Gullberg
mesh_terms: D006801:Humans; D007091:Image Processing, Computer-Assisted; D014054:Tomography / Q000379:methods*
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