Primary radiation diaphragm for X-ray diagnostics devices

Details Primary radiation diaphragm for X-ray diagnostics devices Primary radiation diaphragm for X-ray diagnostics devices

1985-11-05

1987-09-01

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Beam control

Collimator

378150, G21K 104

Patent

active

046913351

ABSTRACT:
A primary X-ray diaphragm for X-ray diagnostics devices has at least two pairs of diaphragm plates, each pair being in a common plane and the pairs being in spaced parallel planes, and a common drive connection to both pairs of diaphragm plates for simultaneously moving the plates in each pair in opposite directions perpendicular to a central X-ray beam, the drive connection moving the plates in the plane which is closer to the X-ray focus at a faster rate than the plates in the plane farther from the focus so that the plates in the spaced planes overlap at every plate position. The drive connection may be in the form of pulleys of different diameters connected to a common axle, with tooth belts being entrained around the pulleys and respectively connected to the pairs of plates.

REFERENCES:
patent: 1909118 (1933-05-01), Raab
patent: 4203037 (1980-05-01), Gur et al.
patent: 4315146 (1982-02-01), Rudin
patent: 4380819 (1983-04-01), Everett et al.
patent: 4577341 (1986-03-01), Schwieker et al.

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