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Article Dans Une Revue Physics in Medicine and Biology Année : 2023

Image reconstruction from truncated fan-beam projections along a circular trajectory using the virtual fan-beam method

Résumé

In this paper, we present five 2D reconstruction formulas, based on the virtual fan-beam (VFB) method, which perform region-of-interest (ROI) reconstruction using truncated fan-beam projections acquired on a circular scan. These formulas can be classified according to the geometry for the backprojection. Two of them do it in a virtual parallel geometry and one in a virtual fan-beam geometry while the last two, which we believe to be new, do it in the fan-beam acquisition geometry. Numerical simulations, using the Forbild head and thorax phantoms, demonstrate the efficacy of our formulas. Spatial resolution analysis and a variance study indicate minor differences between these five VFB formulas.
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Dates et versions

hal-04236821 , version 1 (11-10-2023)

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Mathurin Charles, Rolf Clackdoyle, Simon Rit. Image reconstruction from truncated fan-beam projections along a circular trajectory using the virtual fan-beam method. Physics in Medicine and Biology, 2023, 68 (24), pp.245004. ⟨10.1088/1361-6560/ad00fd⟩. ⟨hal-04236821⟩
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