Recent observations with phase-contrast x-ray computed tomography

Atsushi Momose; Tohoru Takeda; Yuji Itai; Jinhong Tu; Keiichi Hirano

doi:10.1117/12.363720

22 September 1999 Recent observations with phase-contrast x-ray computed tomography

Atsushi Momose, Tohoru Takeda, Yuji Itai, Jinhong Tu, Keiichi Hirano

Proceedings Volume 3772, Developments in X-Ray Tomography II; (1999) https://doi.org/10.1117/12.363720
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Recent development in phase-contrast X-ray computed tomography using an X-ray interferometer is reported. To observe larger samples than is possible with our previous X-ray interferometer, a large monolithic X-ray interferometer and a separated-type X-ray interferometer were studied. At the present time, 2.5 cm X 1.5 cm interference patterns have been generated with the X-ray interferometers using synchrotron X-rays. The large monolithic X-ray interferometer has produced interference fringes with 80% visibility, and has been used to measure various tissues. To produce images with higher spatial resolution, we fabricated another X-ray interferometer whose wafer was partially thinned by chemical etching. A preliminary test suggested that the spatial resolution has been improved.

Citation Download Citation

Atsushi Momose, Tohoru Takeda, Yuji Itai, Jinhong Tu, and Keiichi Hirano "Recent observations with phase-contrast x-ray computed tomography", Proc. SPIE 3772, Developments in X-Ray Tomography II, (22 September 1999); https://doi.org/10.1117/12.363720

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