Primary radiation diaphragm

Details Primary radiation diaphragm Primary radiation diaphragm

1991-01-30

1992-02-04

Church, Craig E.

X-ray or gamma ray systems or devices

Beam control

Collimator

378150, G21K 104

Patent

active

050864440

ABSTRACT:
A primary radiation diaphragm for use in a medical radiation application apparatus for gating the x-ray beam emitted by a radiation source onto a desired region has first and second diaphragm plates and an actuator for the diaphragm plates having two ranges of adjustment. The first diaphragm plate is adjusted within the first range of adjustment by movement of the actuator, and the second diaphragm rate is adjusted by moving the actuator within the second range of adjustment.

REFERENCES:
patent: 3115580 (1963-12-01), Brewer
patent: 4672652 (1987-06-01), Huttenrauch et al.
patent: 4794629 (1988-12-01), Pastyr et al.
patent: 4897861 (1990-01-01), Schaefer et al.

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