Patent ID: 8169522

Claim:
A high-energy radiation imaging system for detecting radiation comprising: a plurality of semiconductor high-energy radiation, direct-conversion imaging devices tiled together to form a mosaic, each of said plurality of imaging devices comprising an array of pixel cells including a two-dimensional array of pixel detectors which are integrally formed on each of said plurality of imaging devices, and directly generate charge in response to incident high-energy radiation, and a corresponding array of individually addressable pixel circuits, each pixel circuit being associated with a respective pixel detector for reading out charge directly resulting from radiation incident on said pixel detector and comprising charge read out circuitry connected to said respective pixel detector for reading out charge directly resulting from radiation incident on said respective pixel detector, said pixel circuit outputting said charge as a current value, wherein, a first imaging device of the plurality of imaging devices is separated from a second imaging device adjacent thereto by an inactive region, and when the mosaic is in a first position, a given location relative to an object to be imaged is occupied by said inactive region, the high-energy radiation imaging system including means arranged to selectively move the mosaic, relative to the object to be imaged, from the first position to a second position, such that when the mosaic is in the second position the given location relative to the object to be imaged is occupied by one of said plurality of imaging devices.