Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Hiroshi Sugiyama"'
Autor:
Hiroshi Sugiyama, Shu Ichihara, Gang Li, Masami Ando, Yoshinori Chikaura, Tokiko Endo, Hiroyasu Esumi, Chiho Ohbayashi, Hiroko Bando, Katsuhito Yamasaki, Anton Maksimenko
Publikováno v:
Japanese Journal of Applied Physics. 45:L740-L743
The visibility of breast cancer was studied by two types of Laue angular filter (LAF) under x-ray dark field imaging. One was designed so that a field size of 90 ×90 mm2 was available by a 2.124-mm-thick LAF with a 35 keV x-ray energy. The second wa
Publikováno v:
Japanese Journal of Applied Physics. 42:L1096-L1099
We developed new notdestructive observation method that simultaneously provides four different types of contrast: dark- and bright-fields and absorption and phase-interferences. The first two contrasts originate from the deflection of X-ray on the bo
Autor:
Dingchang Xian, Koichi Mori, Kazuyuki Hyodo, Yoshihisa Tanaka, Xiao W. Zhang, Wanwisa Pattanasiriwisawa, Joseph B. Roberson, Masami Ando, Anton Maksimenko, Edward Rubenstein, Hiroshi Sugiyama, Jy Chen
Publikováno v:
Japanese Journal of Applied Physics. 41:4742-4749
We report an X-ray optical system 'Owl', capable of dark-field imaging. It comprises a Bragg case asymmetric monochromator and a monolithic X-ray optics housing a collimator C and an analyzer A that can select only the refracted light by 4,4,0 diffra
Publikováno v:
Japanese Journal of Applied Physics. 46:L608-L610
A finger joint tomogram based on X-ray dark-field imaging (XDFI) was demonstrated using the simplest shift-and-add tomosynthesis algorithm. Raw XDFI image data for tomosynthesis were acquired in a total of 11 views through 10°, in increments of 1°,
Autor:
Kazuyuki Hyodo, Wanwisa Pattanasiriwisawa, Hiroshi Sugiyama, Masami Ando, Chikao Uyama, Anton Maksimenko
Publikováno v:
Japanese Journal of Applied Physics. 41:L1016-L1018
X-ray dark-field and bright-field imaging in the Laue geometry has been successfully demonstrated. Using a Bragg-case asymmetric monochromator that produces an X-ray beam with a 0.3 µrad divergence incident onto an object and a Laue geometry analyze
Publikováno v:
Japanese Journal of Applied Physics. 53:040302
A novel X-ray Bragg magnifier of variable magnification is proposed. Using a Si(220) asymmetric crystal as the Bragg magnifier, we successfully controlled the magnification factor, M, between 0.18 and 5.6 at a wavelength of 0.112 nm. The observed spa
Publikováno v:
Japanese Journal of Applied Physics. 42:5874-5875
The ligament structures, its torn surface and articular cartilage of a sliced human joint specimen, which could not be detected by absorption contrast, were depicted clearly by refraction-contrast imaging using a Laue geometry analyzer crystal. The i
Autor:
Hiroshi Sugiyama, Kazuyuki Hyodo, Chiho Ohbayashi, Masami Ando, Hiroyasu Esumi, Toshiaki Kawai, Anton Maksimenko, Katsuhito Yamasaki, Gang Li
Publikováno v:
Japanese Journal of Applied Physics. 44:L998
A world first two-dimensional mapping of X-ray fluorescence from an invasive papillary carcinoma containing three kinds of metal elements that by white radiation has been obtained. Carcinoma shows intense Ca K X-rays, while normal tissue including st
Publikováno v:
Japanese Journal of Applied Physics. 44:L633
In recent years, X-ray refraction contrast has become a very powerful tool for nondestructive observations. It has great advantages over conventional absorption and phase-shift contrasts. The main advantage is the ability to visualize very tiny detai
Publikováno v:
Japanese Journal of Applied Physics. 44:1892
Oxygen atoms dissolved near the surface regions in Ge1-x Si x alloys were studied by extended energy-loss fine structure (EXELFS) analysis using electron energy-loss spectroscopy (EELS) and the local structures around oxygen were determined. Oxygen p