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Phase-Contrast Tomographic Imaging Using an X-ray Interferometer.

Research paper by A A Momose, T T Takeda, Y Y Itai, A A Yoneyama, K K Hirano

Indexed on: 21 Jul '04Published on: 21 Jul '04Published in: Journal of Synchrotron Radiation



Abstract

Apparatus for phase-contrast X-ray computed tomography using a monolithic X-ray interferometer is presented with some observational results for human breast tissues. Structures characteristic of the tissues were revealed in the phase-contrast tomograms. The procedure of image analysis consists of phase retrieval from X-ray interference patterns and tomographic image reconstruction from the retrieved phase shift. Next, feasibility of phase-contrast imaging using a two-crystal X-ray interferometer was studied aiming at in vivo observation in the future. In a preliminary study, the two-crystal X-ray interferometer was capable of generating fringes of 70% visibility using synchrotron X-rays.