X-ray or gamma ray systems or devices – Beam control – Collimator
Patent
1996-12-26
1998-08-25
Wong, Don
X-ray or gamma ray systems or devices
Beam control
Collimator
378149, 378150, G21K 100
Patent
active
057990573
ABSTRACT:
The present invention, in one form, is a scatter collimator for a computed tomography system including an x-ray source. The scatter collimator is positioned between a detector array and an object to be imaged. The scatter collimator includes a housing, a plurality of attenuating blades and a plurality of attenuating wires. The blades and wires are mounted to the housing, and oriented substantially perpendicular to each other. Particularly, the blades and wires form a two-dimensional shielding grid. The blades also are oriented so that they are radially and focally aligned with the x-ray source. A detector element of the detector array is secured to the housing so that the blades and wires are between the detector element and the x-ray source. The detector element, in one form, includes a scintillation element which is coated with a light-retaining material.
REFERENCES:
patent: 4429227 (1984-01-01), Dibianca et al.
patent: 5357553 (1994-10-01), Ferlic et al.
Englert August O.
Hoffman David M.
Mruzek Michael Thomas
Beulick John S.
General Electric Company
Pilarski John H.
Wong Don
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