Refraction-contrast imaging using undulator radiation at SPring-8

被引：11

作者：

Suzuki, Y ^{[1
]}

Yagi, N ^{[1
]}

Umetani, K ^{[1
]}

Kohmura, Y ^{[1
]}

Yamasaki, K ^{[1
]}

机构：

[1] JASRI, Mikazuki, Hyogo 6795198, Japan

来源：

MEDICAL APPLICATIONS OF PENETRATING RADIATION | 1999年 / 3770卷

关键词：

refraction; phase contarst; projection imging; deflection;

D O I：

10.1117/12.368183

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

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.

引用

页码：13 / 22

页数：10

共 10 条

[1] AN X-RAY INTERFEROMETER [J].