  Phase Contrast Imaging (PCI), Dark-Field (DF) and Directional Dark-Field
(DDF) imaging are recent X-ray imaging modalities that have demonstrated their
interest by providing access to information and contrasts different from those
provided by conventional absorption X-ray imaging. However, access to these two
types of images is currently limited because the acquisitions require the use
of coherent sources such as synchrotron radiation or complicated optical setups
to exploit the coherence requirements. This work demonstrates the possibility
of efficiently performing phase contrast, dark-field and directional dark-field
imaging on a low-coherence laboratory system equipped with a conventional X-ray
tube, using a simple, fast and robust single-mask technique. The transfer to a
low spatial coherence laboratory system was made possible by using random
modulation based imaging (MoBI) and extending the low coherence system
algorithm to retrieve dark-field and directional dark-field.
