Open AccessHard X‐ray phase‐contrast tomography of non‐homogeneous specimens: grating interferometry versus propagation‐based imaging
Author(s) -
Ruiz-Yaniz Maite,
Zanette Irene,
Sarapata Adrian,
Birnbacher Lorenz,
Marschner Mathias,
Chabior Michael,
Olbinado Margie,
Pfeiffer Franz,
Rack Alexander
Publication year - 2016
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577516009164
Subject(s) - optics , phase contrast imaging , interferometry , grating , phase retrieval , homogeneous , contrast (vision) , tomography , refractive index , phase (matter) , materials science , physics , phase contrast microscopy , fourier transform , quantum mechanics , thermodynamics
X‐ray phase‐contrast imaging is an effective approach to drastically increase the contrast and sensitivity of microtomographic techniques. Numerous approaches to depict the real part of the complex‐valued refractive index of a specimen are nowadays available. A comparative study using experimental data from grating‐based interferometry and propagation‐based phase contrast combined with single‐distance phase retrieval applied to a non‐homogeneous sample is presented (acquired at beamline ID19‐ESRF). It is shown that grating‐based interferometry can handle density gradients in a superior manner. The study underlines the complementarity of the two techniques for practical applications.