Three-dimensional contrast transfer functions in propagation-based tomography (2022)
A single-step method is developed for three-dimensional reconstruction of the spatial distribution of complex refractive index in weakly scattering objects from multiple planar transmission images. The images are collected using coherent or partially-coherent illumination at a range of incident directions in the Fresnel region after free-space propagation from the object to the detector. The method is based on the contrast transfer function formalism extended to the cases of partially-coherent illumination and strongly absorbing samples. The proposed tomographic methods can be used for 3D reconstruction of internal structure of objects with X-rays, electrons and other forms of radiation and matter waves. Compared to related previously published methods for propagation-based phase-contrast tomography, the results reported in the present paper can be applied to a wider range of imaging conditions and can be also advantageous in terms of computational efficiency and robustness with respect to noise.
CitationThompson DA, Nesterets YI, Pavlov KM, Gureyev TE (2022). Three-dimensional contrast transfer functions in propagation-based tomography.
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Keywordsphase contrast; computed tomography; contrast transfer functions; three-dimensional reconstruction
ANZSRC Fields of Research34 - Chemical sciences::3406 - Physical chemistry::340605 - Molecular imaging (incl. electron microscopy and neutron diffraction)
51 - Physical sciences::5105 - Medical and biological physics::510502 - Medical physics
RightsAll rights reserved unless otherwise stated
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