Abstract
A tomography algorithm is proposed for the reconstruction of the three-dimensional (3D) distribution of the real refractive index of a pure phase sample from the projections of cone-beam propagation-based imaging (PBI). The algorithm first retrieves the integral of the real refractive index based on the formula described in this letter, and then a conventional computed tomography algorithm is performed to reconstruct the 3D distribution of the real refractive index of the sample. The computer simulations show that this method is effective for PBI tomography.
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