Patent ID: 6878942

Claim:
An x-ray imaging arrangement for obtaining diagnostic radiographic images, said arrangement comprising: an x-ray emission source located at a spaced-apart distance from an x-ray detector and an x-ray beam collimator positioned between said x-ray emission source and said x-ray detector; a silicon substrate based radiation detector comprising a silicon detector wafer having a mechanically damaged edge zone characterized by the production of interfering background current during radiation detection; a plurality of pixel sensor strips being arranged on said silicon detector wafer, each at a spaced-apart, lateral distance from said mechanically damaged edge zone, said plurality of pixel sensor strips collectively defining a substantially planar active x-ray detection area of said silicon detector wafer; a guard ring being at least partially located laterally between said pixel sensor strips and said mechanically damaged edge zone and thereby establishing a dead area of said silicon detector wafer extending interiorly from said guard ring toward said pixel sensor strips; and said collimator being configured to pass an x-ray beam having a cross-sectional area measured perpendicular to said x-ray beam smaller than said active x-ray detection area.