Motionless Phase Stepping in X-Ray Phase Contrast Imaging with a Compact Source
Abstract
X-ray phase contrast imaging offers a way to visualize the internal structures of an object without the need to deposit any radiation, and thereby alleviate the main concern in x-ray diagnostic imaging procedures today. Grating-based differential phase contrast imaging techniques are compatible with compact x-ray sources, which is a key requirement for the majority of clinical x-ray modalities. However, these methods are substantially limited by the need for mechanical phase stepping. We describe an electromagnetic phase stepping method that eliminates mechanical motion, and thus removing the constraints in speed, accuracy and flexibility. The method is broadly applicable to both projection and tomography imaging modes. The transition from mechanical to electromagnetic scanning should greatly facilitate the translation of x-ray phase contrast techniques into mainstream applications.
Cite
@article{arxiv.1307.2126,
title = {Motionless Phase Stepping in X-Ray Phase Contrast Imaging with a Compact Source},
author = {Houxun Miao and Lei Chen and Eric E. Bennett and Nick M. Adamo and Andrew A. Gomella and Alexa M. DeLuca and Ajay Patel and Nicole Y. Morgan and Han Wen},
journal= {arXiv preprint arXiv:1307.2126},
year = {2014}
}