Patent ID: 8660239

Claim:
A detector apparatus for scanning of and obtaining radiation data from an object comprising: a radiation source; a radiation detector system spaced therefrom to define a scanning zone and to collect in use a dataset of information about radiation incident at a detector after interaction with the object in the scanning zone and adapted to resolve such collected information spatially in two dimensions across a scanning area and spectroscopically across a plurality of frequency bands in the spectrum of the source; wherein the detector system is adapted to resolve such collected information spectroscopically in that the detector exhibits a spectroscopically variable response across at least a part of the spectrum of the source; and wherein the detector system is adapted to resolve such collected information spatially in that it comprises: a rastering module configured to divide the scanning area into a plurality of pixels in each of two dimensions at a plurality of resolutions; and a detector control means to move the detector across the scanning area to scan such pixels successively and thereby collect a dataset for each pixel.