X-ray phase tomography of a moving object | Zendy

Yongjin Sung | Zendy; Rajiv Gupta | Zendy

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X-ray phase tomography of a moving object

Author(s) -

Yongjin Sung,

Rajiv Gupta

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.023671

Subject(s) - paraxial approximation , optics , tomography , tomographic reconstruction , ray tracing (physics) , smoothness , projection (relational algebra) , iterative reconstruction , computer science , refractive index , computer vision , piecewise , phase (matter) , object (grammar) , physics , artificial intelligence , algorithm , mathematics , beam (structure) , mathematical analysis , quantum mechanics

We propose an algorithm for tomographic reconstruction of the refractive index map of an object translated across a fan-shaped X-ray beam. We adopt a forward image model valid under the non-paraxial condition, and use a unique mapping of the acquired projection images to reduce the computational cost. Even though the imaging setup affords only a limited angular coverage, our algorithm provides accurate refractive index values by employing the positivity and piecewise-smoothness constraints.

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