Visibility-contrast image obtained by the X-ray grating interferometer reflects reduction of coherence due to the object's structures. In the case of the one-dimensional grating, visibility-contrast image is affected by relative angle between the structures of the object and the grating. In this study, we have investigated the features of the visibility-contrast signal at the edge of the object. We imaged the acrylic cylinder with the Talbot-Lau interferometer (Konica Minolta, Inc.) by rotating from -90 degrees to +90 degrees with respect to the grating's periodic direction, and measured its edge signal. The signal became its maximum at -90 degrees and +90 degrees, and became zero at 0 degree. This result showed a good agreement with the angle dependency of the x-ray refraction at the edge of the cylindrical structure. © 2014 Springer International Publishing.
CITATION STYLE
Shibata, T., Okubo, S., Iwai, D., Kiyohara, J., Nagatsuka, S., & Kodera, Y. (2014). Investigation of dependence on the object orientation in visibility-contrast imaging with the X-ray Talbot-Lau interferometer. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 8539 LNCS, pp. 482–487). Springer Verlag. https://doi.org/10.1007/978-3-319-07887-8_67
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