Phase-contrast microtomography of thin biomaterials.

Phase-contrast microtomography, performed at the beamline ID 22 of the European Synchrotron Radiation Facility (ESRF, Grenoble, France), is demonstrated for high-resolution 3-D imaging of a hydroxyapatite sample. The technique, which relies on phase contrast imaging, gives the possibility to observe features inside samples with negligible absorption contrast. The positive results obtained suggest a possible future investigation of the influence of the distribution of pores and defects inside biomaterial coatings, on the growth of osteoblast cells.