High-Speed X-ray Phase Imaging with Grating Interferometer and White Synchrotron Light

Abstract

Taking advantage of the fact that an X‐ray Talbot interferometer functions with X‐rays of a broad energy band width, high‐speed X‐ray phase imaging and tomography have been achieved by using white synchrotron light. An X‐ray phase tomogram could be measured with a 0.25 s exposure. Furthermore, a series of X‐ray phase tomograms, in other words, a four‐dimensional X‐ray phase tomogram, could be reconstructed with a tomogram frame rate of 25.5 fps. This achievement advances X‐ray phase imaging/tomography from a technique for static imaging to one for dynamic imaging of weakly absorbing objects.