ScienceAsia 33 (2007): 103-111 |doi: 10.2306/scienceasia1513-1874.2007.33.103

X-ray Imaging with a Wedge-shaped Crystal Analyzer

Wanwisa Pattanasiriwisawa^a*, Hiroshi Sugiyama^b,c, Anton Maksimenko^b,c, Masami Ando^b,c and Takehiko Ishii^a

 
ABSTRACT: The advantage of X-ray imaging by the use of synchrotron radiation and a wedge-shaped crystal analyzer is shown. The experiments have been carried out using synchrotron radiation from a 5T superconducting wiggler in a 2.5 GeV storage ring. Striped image patterns characteristic of a wedge-shaped crystal analyzer are clearly observed. Results on breast cancer phantoms and an ant show images with good contrasts revealing the interiors of the samples in case of dark field images, which are not seen in bright field images. The physical process of the generation of a dark field image is simply explained. The obtained results present the experimental evidence for the basic assumption made in the explanation of the dark field imaging.

KEYWORDS: X-ray imaging, Breast phantom, Synchrotron radiation, X-ray dynamical diffraction, Medical Application.

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