The phase retrieval problem can be reduced to the second order partial differential equation. In order to retrieve the absolute values of the X-ray phase and to minimize the reconstruction artifacts we defined the mixed inhomogeneous boundary condition using available a priori information about the sample. Finite element technique was used to solve the boundary value problem. The approach is validated on numerical and experimental phantoms. In order to demonstrate a possible application of the method, we have processed an entire tomographic set of differential phase images and estimated the magnitude of the refractive index decrement for some tissues inside complex biomedical samples.

Gasilov, S., Mittone, A., Horng, A., Bravin, A., Baumbach, T., Geith, T., et al. (2015). Boundary value problem for phase retrieval from unidirectional X-ray differential phase images. OPTICS EXPRESS, 23(10), 13294-13308 [10.1364/OE.23.013294].

Boundary value problem for phase retrieval from unidirectional X-ray differential phase images

Bravin A
Membro del Collaboration Group
;
2015

Abstract

The phase retrieval problem can be reduced to the second order partial differential equation. In order to retrieve the absolute values of the X-ray phase and to minimize the reconstruction artifacts we defined the mixed inhomogeneous boundary condition using available a priori information about the sample. Finite element technique was used to solve the boundary value problem. The approach is validated on numerical and experimental phantoms. In order to demonstrate a possible application of the method, we have processed an entire tomographic set of differential phase images and estimated the magnitude of the refractive index decrement for some tissues inside complex biomedical samples.
Articolo in rivista - Articolo scientifico
phase retrieval, X-rays, phase contrast imaging
English
2015
23
10
13294
13308
open
Gasilov, S., Mittone, A., Horng, A., Bravin, A., Baumbach, T., Geith, T., et al. (2015). Boundary value problem for phase retrieval from unidirectional X-ray differential phase images. OPTICS EXPRESS, 23(10), 13294-13308 [10.1364/OE.23.013294].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/342701
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