X-ray detector system

Details X-ray detector system X-ray detector system

1987-06-25

1989-08-08

Church, Craig E.

X-ray or gamma ray systems or devices

Beam control

Collimator

378 19, 378145, 25036310, 2505051, G21K 102

Patent

active

048560413

ABSTRACT:
An x-ray detector system has a detector element disposed at the end of a channel formed by spaced collimator plates. The thickness of each collimator plate projected onto the detector element increases along the length of the collimator plates in the direction of radiation propagation through the channel. The projection (and thus the thickness) has a greatest value at a detector-proximate end of the plate. The edge regions of the detector element are thus shielded from x-radiation by the extended width collimator plates. The length of the absorption paths in the detector element thus are substantially the same, even given a detector element which is slightly obliquely disposed. Thus the shape of the portion of the detector surface effective for detecting radiation is substantially independent of slight changes in the focus position.

REFERENCES:
patent: 3227880 (1966-01-01), Wideroe
patent: 4187427 (1980-02-01), Cusano
patent: 4286156 (1981-08-01), Wagner
patent: 4403150 (1983-09-01), Kurihara et al.
patent: 4638499 (1987-01-01), Eberhard et al.
"A Hard X-Ray Imaging Collimator", by Van Beek Space Science Instrumentation, vol. 2, pp. 197-204, 1976.

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