Patent ID: 7564940

Claim:
A two-dimensional radiation detector for a radiographic scanner, the radiation detector comprising: an anti-scatter module; a first aligning means for aligning the anti-scatter module with a spatial focus; a second aligning means for aligning the anti-scatter module; a detector subassembly module, each detector subassembly module including a substrate and an array of detector elements arranged on the substrate to detect radiation, and a radiation absorbing mask formed as a grid and arranged between the array of the detector elements and the anti-scatter module; wherein the second aligning means includes alignment pins that align the anti-scatter module with the detector subassembly module wherein the second aligning means further includes: alignment openings disposed on the substrate; and alignment openings disposed on the radiation absorbing mask; wherein the alignment pins are disposed on the anti-scatter module, such that inserting the pins into the radiation absorbing mask alignment openings and the substrate alignment openings aligns the detector element array with the radiation absorbing mask and the anti-scatter module.