Investigation of Dependence on the Object Orientation in Visibility-Contrast Imaging with the X-Ray Talbot-Lau Interferometer

Autor:	Junko Kiyohara, Sumiya Nagatsuka, Takayuki Shibata, Daiki Iwai, Shohei Okubo, Yoshie Kodera
Rok vydání:	2014
Předmět:	Physics Interferometry Optics business.industry Physics::Optics Cylinder Degree (angle) Grating Edge (geometry) business Refraction Signal Coherence (physics)
Zdroj:	Breast Imaging ISBN: 9783319078861 Digital Mammography / IWDM
DOI:	10.1007/978-3-319-07887-8_67
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9b321d1a5c4bd4a3aa4a256ca82af023 https://doi.org/10.1007/978-3-319-07887-8_67 Zobrazit plný text záznamu