Primary radiation diaphragm for x-ray diagnostics equipments

Details Primary radiation diaphragm for x-ray diagnostics equipments Primary radiation diaphragm for x-ray diagnostics equipments

1988-06-20

1990-01-30

Church, Craig E.

X-ray or gamma ray systems or devices

Beam control

Collimator

378152, G21K 104

Patent

active

048978612

ABSTRACT:
The diaphragm plates are individually adjustable in two-dimensional fashion. Semi-transparent diaphragm sections at the edges of the diaphragm plates limiting the radiation are adjustable perpendicular to the respective edge with a lever linkage such that the semi-transparent region becomes larger when the diaphragm is closed. A feedback control unit is present for operation. This feedback control unit has two operating pieces as an operating mechanism, which are displaceable by a user to positions similar to the diaphragm plates, and are electrically coupled to the feedback control unit to cause movement of the diaphragm plates to a position corresponding to the position of the operating plates.

REFERENCES:
patent: 3631249 (1971-12-01), Freide et al.
patent: 3829701 (1974-08-01), Hura
patent: 3980407 (1976-09-01), Hill
patent: 4472828 (1984-09-01), Ferlie
patent: 4514859 (1985-04-01), Holzermer
patent: 4672652 (1987-06-01), Huettenrauch
patent: 4752947 (1988-06-01), Telorack
patent: 4754147 (1988-06-01), Maughan et al.

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