PHASE CONTRAST IMAGING
In Phase-Contrast X-ray Imaging (PCI), the change in the phase of a X-ray beam that passes through an object is recorded by specific detectors, creating projection images of the object. In respect to usual X-rays techniques, which rely on the measurement of the attenuation of X-rays interacting with matter, PCI is useful when imaging soft tissues that do not possess large variations in X-ray absorption properties. Phase Contrast Imaging can also be combined with tomographic techniques to obtain 3D reconstruction.