X-ray or gamma ray systems or devices – Beam control – Antiscatter grid
Patent
1985-01-22
1987-05-05
Church, Craig E.
X-ray or gamma ray systems or devices
Beam control
Antiscatter grid
378 37, 378167, 378181, G21K 100
Patent
active
046637745
ABSTRACT:
An X-ray diagnostics installation has an X-ray tube for directing an X-ray beam at an examination subject disposed within the beam path on a support plate, the support plate having a secondary radiation grid on one side thereof, and having a receptacle therein for an X-ray film cassette. The support plate is mounted so as to be rotatable about an axis which is perpendicular to a central ray of the X-ray beam such that the secondary radiation grid can be optionally disposed in front of or behind the X-ray film cassette as viewed in the radiation direction, while the film focus distance remains the same.
REFERENCES:
patent: 1646065 (1927-10-01), Pohlmann
patent: 2720595 (1955-10-01), Goldfield et al.
patent: 3251570 (1966-05-01), Frost et al.
patent: 3747884 (1973-07-01), Steisslinger et al.
patent: 4060733 (1977-11-01), Franke et al.
patent: 4132897 (1979-01-01), Ohlson et al.
patent: 4286157 (1981-08-01), Eickel et al.
Church Craig E.
Freeman John C.
Siemens Aktiengesellschaft
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