title: Quantitative in-line phase-contrast imaging with multienergy X rays.
abstract: We present a new method for quantitative nondestructive characterization of objects by x-ray phase-contrast imaging. Spatial distributions of the projected values of the complex refractive index in the sample are reconstructed by processing near-field images collected at a fixed sample-to-detector distance using a polychromatic incident beam and an energy-sensitive area detector, such as a CCD used in the photon-counting spectroscopy mode. The method has the potential advantages of decreased radiation dose and increased accuracy compared to conventional techniques of x-ray imaging.
authors: Commonwealth Scientific and Industrial Research Organisation, PB 33, Clayton South, VIC 3169, Australia.
authors: T E
authors: TE
authors: Gureyev
authors: S
authors: S
authors: Mayo
authors: S W
authors: SW
authors: Wilkins
authors: D
authors: D
authors: Paganin
authors: A W
authors: AW
authors: Stevenson