Portable x-ray imaging apparatus

摘要

Apparatus (1) for imaging an object (4) on the remote side of a barrier (6). The apparatus (1) has source means (2) for illuminating the object (4) through the barrier (6) with radiation and detector means (8) for detecting radiation back-scattered from a plurality of points on the object (4). Mask means (10) has a plurality of radiation transparent areas arranged in a pre-determined pattern wherein the back-scattered radiation from each point is masked thereby to project on to the detector means (8), at a position determined by the position of the point, a pattern of radiation corresponding to the pattern of the mask means (10). The apparatus also has image generation means for generating an image of the object from an analysis of the accumulated plurality of patterns of radiation.