Refraction-contrast imaging using undulator radiation at SPring-8

Yoshio Suzuki; Naoto Yagi; Keiji Umetani; Yoshiki Kohmura; Katsuhito Yamasaki

doi:10.1117/12.368183

6 October 1999 Refraction-contrast imaging using undulator radiation at SPring-8

Yoshio Suzuki, Naoto Yagi, Keiji Umetani, Yoshiki Kohmura, Katsuhito Yamasaki

Proceedings Volume 3770, Medical Applications of Penetrating Radiation; (1999) https://doi.org/10.1117/12.368183
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Yoshio Suzuki, Naoto Yagi, Keiji Umetani, Yoshiki Kohmura, and Katsuhito Yamasaki "Refraction-contrast imaging using undulator radiation at SPring-8", Proc. SPIE 3770, Medical Applications of Penetrating Radiation, (6 October 1999); https://doi.org/10.1117/12.368183

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