Field
    X-ray, Health Care
Keywords
    X-ray, Electromagnetic Wave, Nondestructive Analysis Method, Nondestructive Analysis Device,
    High Contrast Image, Transmissive Crystal Analysis Body


Abstracts
PROBLEM TO BE SOLVED: To provide a new nondestructive analysis method and a nondestructive analysis device capable of obtaining high-contrast images of the interior of an object easily at a time.SOLUTION: With monochromatic parallel X rays 1, the object 2 is irradiated, and refracted X rays 3 and the like coming from the object 2 are made to enter a transmissive crystal analysis body 4a. When the X rays 3 and the like are dispersed into forward-diffractive X rays 41a and diffractive-direction diffracted X rays 42a by the dynamic diffractive action of the analysis body 4a, the thickness of the analysis body 4a is set at such a thickness that either the intensity of the X rays 41a or that of the X rays 42a is substantially zeroed in terms of the intensity of X rays less affected by directly entering X rays in comparison with the intensity of the other.

Advantages
XDFI can inspect tissue of having lived without sensitizer. A dose of radioactivity is small. Contrast is large. The picture of detailed structure 50 micrometers or less is obtained. If there is 1% or more of difference with electron density, it is discriminable by XDFI.

Inventor
Prof. Masami Ando  (Tokyo University of Science)


Patent Publication No
(APPLICATION NUMBER, FILING DATE)JP2002-186332 (Jun. 26, 2002)(PUBLICATION NUMBER, PUBLICATION DATE)JP2003-329617 (Nov.19, 2003) (PRIORITY APPLICATION NUMBER, PRIORITY DATE)①JP2001-211221 (Jul. 11, 2001), ② JP2002-058053 (Mar. 4, 2002)

Publication
Highly sensitive detection of the soft tissues based on refraction contrast by in-plane diffraction-enhanced imaging CT. Tetsuya Yuasa, Eiko Hashimoto, Anton Maksimenko,Hiroshi Sugiyama, Yoshinori Arai, Daisuke Shimao, Shu Ichihara, and Masami Ando. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SP May 2008.
3D Reconstruction and Virtual Ductoscopy of High-Grade Ductal Carcinoma In Situ of the Breast with Casting Type Calcifications Using Refraction-Based X-ray CT, S. Ichihara, M. Ando, A. Maksimenko, T. Yuasa, H. Sugiyama, E. Hashimoto, K. Yamasaki, K. Mori, Y. Arai and T. Endo, VIRCHOWS ARCHIV, 452:41-7　2008

Internal file number
T2009-046, G2009-012

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