title: Quantitative analysis of fringe visibility in grating-based x-ray phase-contrast imaging.
abstract: The newly developed x-ray differential phase-contrast imaging technique has attracted increasing research interest. In this study, we quantitatively analyze the fringe visibility obtained in differential phase-contrast imaging. Numerical results of the visibility for polychromatic x rays with different structure heights of absorption gratings are shown and discussed. Furthermore, the fringe visibility of the nonabsorption grating approach is calculated, and based on the results, we conclude that this approach can potentially be applied for higher x-ray photon energies. These analytic results will be useful for designing a differential phase-contrast imaging system for different applications.
authors.forename: Jianheng
authors.initials: J
authors.lastname: Huang
authors.forename: Yaohu
authors.initials: Y
authors.lastname: Lei
authors.forename: Yang
authors.initials: Y
authors.lastname: Du
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.forename: Jinchuan
authors.initials: J
authors.lastname: Guo
authors.forename: Ji
authors.initials: J
authors.lastname: Li
authors.forename: Hanben
authors.initials: H
authors.lastname: Niu