1. A phase-contrast X-ray imaging system comprising: a stereoscopic X-ray radiation head comprising at least one X-ray source arranged for directing a first X-ray beam and a second X-ray beam in stereoscopic configuration onto an object; at least one X-ray detector arranged for detecting said first X-ray beam and said second X-ray beam having passed through said object to generate a stereoscopic pair of detected data; a laser scanner arranged for scanning a laser fan beam onto at least a portion of a surface of said object; a photon detector arranged for detecting a reflected laser beam originating from said at least a portion of said object surface to generate detected surface data; and a phase-contrast stereoscopic image reconstructing processor connected to said at least one X-ray detector and said photon detector and arranged for co-processing said stereoscopic pair of detected data and said detected surface data to generate a 3D data set limited by said surface data and comprising two two dimensional phase-contrast images of at least a portion of said object collectively fanning a stereoscopic image pair.