On a Derivative-Free Fan-Beam Reconstruction Formula

Abstract

We clarify that the derivative-free fan-beam reconstruction formula [IEEE Trans. Image Process. 2, 543-547, 1993] only allows exact reconstruction of an object for a circular trajectory or at the origin of the coordinate system for a radially symmetric noncircular trajectory. 
DOI: 10.1109/TIP.2010.2076819

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