Radiation detector arrangement

A scanning-based radiation detector arrangement for two-dimensional imaging of an object comprising a plurality of one-dimensional detector units, each exposed to a planar ray bundle of ionizing radiation, as transmitted through or scattered off said object, and being arranged for one-dimensional imaging of the respective planar ray bundle,

• said plurality of one-dimensional detector units being arranged in a two-dimensional array essentially parallel with each other and facing the respective planar ray bundles, wherein
• the one-dimensional detector units are sited in rows and stacks, the rows being parallel with the one-dimensional detector units and the stacks being essentially orthogonal thereto, where the one-dimensional detector units in each row together detect the object completely in one dimension,
• the one-dimensional detector units of each row are staggered with an overlap between adjacent one=dimensional detector units in the direction of the row,
• the one-dimensional detector units of each stack together detect essentially the outer shape of the object in a second dimension, which is perpendicular to said one dimension, and
• said two-dimensional array of essentially parallel one-dimensional detector units is arranged in a plane essentially orthogonal to a radiation direction of said plurality of planar ray bundles or ionizing radiation;
• and
• said scanning-based detector arrangement including a device for moving said two-dimensional array of one-dimensional detector units relative said object in a direction substantially parallel with the detector unit stacks at least a distance corresponding to the distance between two adjacent one-dimensional detector units in the detector unit stacks while the plurality of one-dimensional detector units are arranged to repeatedly detect, hence creating a two-dimensional image of the object.