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Proceedings Paper

Refraction-contrast imaging using undulator radiation at SPring-8
Author(s): Yoshio Suzuki; Naoto Yagi; Keiji Umetani; Yoshiki Kohmura; Katsuhito Yamasaki
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Paper Abstract

Using parallel X-ray beam from undulator light source of the SPring-8, X-ray imaging based on refraction-enhanced contrast has been tested. Projection images were measured at X-ray energies of 8 keV and 28.8 keV with X-ray image detector that is placed at 5 - 6.5 m downstream from specimen. Transmission image of a test sample shows good agreement with ray-trace simulation. The intensity profile can be explained by refraction of X-rays. Deflection of transmitted beam is also measured by using fine X-ray beam collimated by a slit. The deflection angle of X-rays through the sample is around a few micro-radian. The result also well agrees with simple calculation based on geometrical optics. This technique is applied to observation of soft tissues of biological specimen. The result for lung image of nude mouse is presented, and difference between contact image (absorption-contrast) and refraction contrast image is discussed.

Paper Details

Date Published: 6 October 1999
PDF: 10 pages
Proc. SPIE 3770, Medical Applications of Penetrating Radiation, (6 October 1999); doi: 10.1117/12.368183
Show Author Affiliations
Yoshio Suzuki, Japan Synchrotron Radiation Research Institute (Japan)
Naoto Yagi, Japan Synchrotron Radiation Research Institute (Japan)
Keiji Umetani, Japan Synchrotron Radiation Research Institute (Japan)
Yoshiki Kohmura, RIKEN-The Institute of Physical and Chemical Research (Japan)
Katsuhito Yamasaki, Kobe Univ. (Japan)

Published in SPIE Proceedings Vol. 3770:
Medical Applications of Penetrating Radiation
H. Bradford Barber; Hans Roehrig, Editor(s)

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