title: Four-dimensional X-ray phase tomography with Talbot interferometry and white synchrotron radiation: dynamic observation of a living worm.
abstract: 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) moiré 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.
authors.affiliation: Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan. momose@mml.k.u-tokyo.ac.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Momose
authors.forename: Wataru
authors.initials: W
authors.lastname: Yashiro
authors.forename: Sébastien
authors.initials: S
authors.lastname: Harasse
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kuwabara
mesh_terms: D000818:Animals; D000845:Annelida / Q000033:anatomy & histology*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D021621:Imaging, Three-Dimensional / Q000295:instrumentation*; D007368:Interferometry / Q000295:instrumentation*; D008858:Microscopy, Phase-Contrast / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D017356:Synchrotrons / Q000295:instrumentation*; D014056:Tomography, X-Ray / Q000295:instrumentation*