Title :
Computed tomography for reconstructing refractive index distribution using an X-ray shearing interferometer
Author :
Takeyama, Atsushi ; Sugimoto, Shuji ; Kikuta, Hisao ; Iwata, Koichi
Author_Institution :
Graduate Sch. of Eng., Osaka Prefecture Univ., Japan
Abstract :
This paper proposes a method to measure distribution of refractive index for X-rays. Spatial differentiation of phase of the X-ray transmitted through an object is detected using an X-ray shearing interferometer. From such data for different transmission directions we can reconstruct refractive index distribution inside the object using a modified algorithm for computer tomography. Reconstruction experiment is made with plastics as objects.
Keywords :
X-ray applications; computerised tomography; electromagnetic wave interferometers; nondestructive testing; refractive index; CT; X-ray shearing interferometer; computed tomography; refractive index distribution reconstruction; spatial differentiation; transmitted X-ray phase differentiation; Computed tomography; Distributed computing; Object detection; Phase detection; Plastics; Refractive index; Shearing; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1195814
