X-ray beam limiting apparatus including pivotable blade

Details X-ray beam limiting apparatus including pivotable blade X-ray beam limiting apparatus including pivotable blade

1992-05-08

1993-06-29

Porta, David P.

X-ray or gamma ray systems or devices

Beam control

Collimator

378 41, 378153, G21K 104

Patent

active

052241459

ABSTRACT:
An X-ray beam limiting apparatus, is used for a stereoscopic X-ray tube with two focal points separated from each other by a distance of approximately 35 mm. The X-ray beam limiting apparatus includes pivotable blade means for beam-limiting inner edges of pyramid-shaped X-ray beams emitted from the first and second X-ray focal points, while pivoting around center lines of first and second pivotable shafts positionally shifted with each other; and, first slidable blade means for beam-limiting outer edges of the pyramid-shaped X-ray beams emitted from the first and second X-ray focal points, while sliding on a plane substantially perpendicular to travelling paths of the pyramid-shaped X-ray beams.

REFERENCES:
patent: 4641335 (1987-02-01), Hahn
patent: 4766603 (1988-08-01), Okabe et al.

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