Four-dimensional X-ray phase tomography with Talbot interferometry and white synchrotron radiation: dynamic observation of a living worm

被引：96

作者：

Momose, Atsushi ^{[1
]}

Yashiro, Wataru ^{[1
]}

Harasse, Sebastien ^{[1
]}

Kuwabara, Hiroaki ^{[1
]}

机构：

[1] Univ Tokyo, Dept Adv Mat Sci, Grad Sch Frontier Sci, Chiba 2778561, Japan

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 09期

基金：

日本科学技术振兴机构;

关键词：

CONTRAST;

D O I：

10.1364/OE.19.008423

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

X-ray Talbot interferometry is attractive as a method for X-ray phase imaging and phase tomography for objects that weakly absorb X-rays. Because X-ray Talbot interferometry has the advantage that X-rays of a broad energy bandwidth can be used, high-speed X-ray phase imaging is possible with white synchrotron radiation. In this paper, we demonstrate time-resolved three-dimensional observation with X-ray Talbot interferometry (namely, four-dimensional X-ray phase tomography). Differential phase images, from which a phase tomogram was reconstructed, were obtained through the Fourier-transform method, unlike the phase-stepping method that requires several (at least three) moire images to be measured sequentially in order to generate one differential phase image. We demonstrate dynamic observation of a living worm in three dimensions with a time resolution of 0.5 s, visualizing a drastic change in the respiratory tract. (C) 2011 Optical Society of America

引用

页码：8423 / 8432

页数：10

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