ScienceAsia 33 (2007): 103-111 |doi: 10.2306/scienceasia1513-1874.2007.33.103
X-ray Imaging with a Wedge-shaped Crystal Analyzer
Wanwisa Pattanasiriwisawaa*, Hiroshi Sugiyamab,c, Anton Maksimenkob,c, Masami Andob,c and
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
KEYWORDS: X-ray imaging, Breast phantom, Synchrotron radiation, X-ray dynamical diffraction, Medical
a National Synchrotron Research Center (NSRC), 111 University Avenue, Muang District, Nakhon
Ratchasima 30000, Thailand.
b Photon Factory, Institute of Material Structure Science, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
c Department of Photo-Science, School of Advanced Studies, Graduate University for Advanced
Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
* Corresponding author, E-mail: firstname.lastname@example.org
Received 27 Dec 2004,
Accepted 8 Nov 2006