  We demonstrate experimentally the ability to use a single pixel detector for
two-dimensional high-speed and high-resolution x-ray imaging. We image the
rotation of a spinning chopper at 100-kHz at spatial resolution of about 15
microns by using the computational ghost imaging approach. The technique we
develop can be used for the imaging of high-speed periodic dynamics or
periodically stimulated effects with a large field of view and at low dose.
