title: Sampling grating approach for X-ray differential phase contrast imaging.
abstract: Grating-based X-ray differential phase contrast imaging (GDPCI) typically employs the phase-stepping technique to extract an object's phase information. This method requires heavy radiation dosage and is time consuming. Another potential approach is the reverse projection (RP) method, which, however, relies on a synchrotron radiation source to obtain highly sensitive differential phase contrast(DPC) signal. Here, we present an alternative approach that enables the RP method to be used with a conventional X-ray source and substantially improves the sensitivity of the DPC signal by replacing the analyzer grating of the GDPCI with a sampling grating. This development represents a significant step towards obtaining fast and low-dosage DPC images in medical, biological, and industrial applications.
authors.forename: Yang
authors.initials: Y
authors.lastname: Du
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.forename: Jianheng
authors.initials: J
authors.lastname: Huang
authors.forename: Yaohu
authors.initials: Y
authors.lastname: Lei
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zhao
authors.forename: Danying
authors.initials: D
authors.lastname: Lin
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