X-ray or gamma ray systems or devices – Beam control
Patent
1986-01-23
1988-04-26
Church, Craig E.
X-ray or gamma ray systems or devices
Beam control
378156, 378157, 378147, 378146, G21K 100
Patent
active
047410124
ABSTRACT:
An apparatus for slit radiography which comprises an X-ray source and a slit diaphragm through which a body to be examined can be scanned by a planar X-ray fan beam. The slit diaphragm is operatively associated with a plurality of juxtaposed tongue-shaped attenuation elements, which elements are arranged for having their free ends swung to a greater or lesser extent into the X-ray beam so as to effect a local attenuation of the beam. The tongue-shaped attenuation elements form at least one flared configuration as seen from the X-ray source.
REFERENCES:
patent: 3778614 (1973-12-01), Hounsfield
patent: 3997794 (1976-12-01), York et al.
patent: 4127398 (1978-11-01), Singer, Jr.
patent: 4277685 (1981-07-01), Covic et al.
Duinker Simon
Vlasbloem Hugo
B.V. Optische Industrie "De Oude Delft"
Church Craig E.
Freeman John C.
Marn Louis E.
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