2003/09/01 by M. Endrizzi, Marco Endrizzi, F. A. Vittoria +13
Physics and Astronomy · #Advanced X-ray Imaging Techniques #Crystallography and Radiation Phenomena #Geology #Materials science #Optics #Phase (matter) #Phase contrast microscopy #Phase-contrast imaging #Physics #Sample (material) #Spectrum analyzer #Synchrotron #Synchrotron radiation #Tomographic reconstruction #Tomography #X-Ray Phase-Contrast Imaging #X-ray Spectroscopy and Fluorescence Analysis #physics.ins-det
paper · pdf · doi:10.1103/physrevlett.118.243902
published as Phys. Rev. Lett. 118, 243902 (2017)
openalex publication_date 2003/09/01 · openalex created_date 2016/06/24 · arxiv created 2017/01/24 · arxiv updated 2017/06/21 · openalex updated_date 2026/06/24
We present a multiaperture analyzer setup for performing x-ray phase contrast imaging in planar and three-dimensional modalities. The method is based on strongly structuring the x-ray beam with an amplitude modulator, before it reaches the sample, and on a multiaperture analyzing element before detection. A multislice representation of the sample is used to establish a quantitative relation between projection images and the corresponding three-dimensional distributions, leading to successful tomographic reconstruction. Sample absorption, phase, and scattering are retrieved from the measurement of five intensity projections. The method is tested on custom-built phantoms with synchrotron radiation: sample absorption and phase can be reliably retrieved also in combination with strong scatterers, simultaneously attaining high sensitivity and dynamic range.