[Refraction-contrast bone imaging using synchrotron radiation].
The X-ray refraction-contrast imaging using synchrotron radiation with some X-ray energies is successfully performed at B120B2 of SPring-8. The refraction-contrast images of bone samples such as human dried proximal phalanx, wrist, upper cervical vertebrae and sella turcica, and as mouse proximal femur, using the synchrotron X-ray are always better in image contrast and resolution than those of the absorption-contrast images using the synchrotron X-ray and/or the conventional X-ray tube. There is much likeness in the image contrast and resolution of trabeculae bone in the human dried proximal phalanx between X-ray energy of 30 keV at sample-to-film distance of 1m and those of 40, 50 keV at those of 4,5m, respectively. High-energy refraction-constrast imaging with suitable sample-to-film distance could reduce the exposure dose in human imaging. In the refraction-contrast imaging of human wrist, upper cervical vertebrae, sella turcica and mouse proximal femur using the synchrotoron X-ray, we can obtain better image contrast and resolution to correctly extract morphological information for diagnosis corresponding to each of the clinical field than those of the absorption-contrast images.
Mori
Koich
K
Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Japan. mori@ipu.ac.jp
Sekine
Norio
N
Sato
Hitoshi
H
Shikano
Naoto
N
Shimao
Daisuke
D
Shiwaku
Hideaki
H
Hyodo
Kazuyuki
K
Oka
Hiroshi
H
D000818:Animals; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D006801:Humans; D051379:Mice; D011856:Radiographic Image Enhancement / Q000379:methods*; D017356:Synchrotrons