On a derivative-free fan-beam reconstruction formula.

Wang, Ge; Wei, Yuchuan · IEEE Trans Image Process · 2011

other · Level V

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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.

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