Radiography apparatus
AssigneeThomson-CSF
InventorJean Pierre Vasseur
Life of this patent
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Abstract
A novel apparatus for radiographic examination purposes comprises an x-ray source emitting a flat beam. Detectors are arranged in the plane of the beam in order each to pick up part of the beam. To avoid the Compton effect, each detector is associated with it an auxiliary detector which only receives the rays emitted by the Compton effect. An electrical circuit forms a predetermined linear combination of the signals respectively picked up by each detector and the associated auxiliary detector, this in order to prevent the errors which are due to the Compton effect when the beam passes through the body being analysed.
Claims8
A radiography apparatus comprising an X-ray source, a collimator system for concentrating the emitted rays in a flat beam, and principal receptors connected to said source and arranged in the plane in order each to receive a predetermined portion of the beam, the set of principal receptors receiving substantially the whole of the beam, and associated with each principal receptor at least one auxiliary receptor, means for shielding said auxiliary receptor from the direct rays emitted by the source so that it only receives the radiation portions emitted as a consequence of the Compton effect, electrical circuits being provided in order to effect a linear combination of the amplitudes of the signals received respectively by the receptor and the auxiliary receptor.
Dependencies are inferred from the claim text.