K-edge filter and X-ray apparatus employing the same

Details K-edge filter and X-ray apparatus employing the same K-edge filter and X-ray apparatus employing the same

1994-02-04

1994-11-15

Porta, David P.

X-ray or gamma ray systems or devices

Beam control

Filter

G21K 300

Patent

active

053655672

ABSTRACT:
A K-edge filter whose main portion functions as a filter member and is made of a material containing at least two kinds of elements, and an X-ray apparatus is fabricated so as to include such a K-edge filter.

REFERENCES:
patent: 4158769 (1979-06-01), Smith
patent: 4764946 (1988-08-01), Teleki
patent: 4887604 (1989-12-01), Shefer et al.
patent: 4956859 (1990-09-01), Lanza et al.
patent: 5204888 (1993-04-01), Tamegai et al.
patent: 5285489 (1994-02-01), Ohtsuchi et al.
"Comparison of performance characteristics of conventional and K-edge filters in good diagnostic radiology", Nagel, 2362 Physics in Medicine & Biology, Sep. 1989, pp. 1269-1287.
"NIFE-a technical advance in non-invasive determination of total filtration of x-ray tube assemblies", Nagel, 2362 Physics in Medicine & Biology, Sep. 1990, pp. 1335-1343.
"Filter materials for dose reduction in screen-film radiography", Koedooder et al., Phys. Med. Biol., 1986, vol. 31, No. 6, pp. 585-600.

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